What is the TBI code on a 1990 Chevy truck?

Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck. For some scan tools enter VIN 10th“L” 3rd“C” 8th“K”.

Can a carburetor be replaced in a TBI engine?

While it works fine for stock applications, the fact is that General Motors’ Throttle Body Injection (TBI) system is a nightmare for modified engines. Though it is possible to replace the injectors and throttle body, and to reprogram the computer, many find it simpler to “down-grade” to a carburetor setup.

How much horsepower does a TBI fuel pump support?

First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel pressure drops like a rock.

Where is the ECM on a GM TBI?

Start by jumping the A&B pins on the ALDL (Assembly Line Data Link) connector under the dash. Pins A&B are on the upper-right-hand side. These are the same two pins you jump to read codes from the ECM. Now turn the key on (the Check Engine light should be lit) and leave the key on for at least 30 seconds.

How to order a 350 TBI Chevy performance engine?

Here you can see the 350 TBI engine specs, shipping info, and more! Instant quotes: (888) 957-5454 For optimum service and purchase accuracy all quotes and orders are completed by phone. You can reach by phone at 1-888-957-5454 or email at [email protected]!

How long is the warranty on a Chevy 350 TBI?

Our nationwide warranty on the 350 TBI is a whopping 5 years or 50,000 miles. Why? Because we take pride in the engines we build knowing they are our best when they leave here. We use a common-sense and personable approach getting you back on the road as quickly as possible if anything were to happen.

How much is the Edelbrock performer TBI engine?

A little skeptical due to all the great parts that this engine had it was hard to believe it was $2495 with free Shipping. The Edelbrock Performer TBI is in excess of $300 all by itself! So I took a chance and I am sure glad I did. Delivered right to shop with great instructions.

What should the fuel pressure be on a 350 TBI?

From 370-440hp you need to bump the fuel pressure up on the 454 injectors to the 15-18psi to increase their flow rate to 100lb/hr.

Can you change the throttle body on a 350 TBI?

Modify the throttle body. This one pretty cheap but does require removing the throttle body. UTIMATE MODS . Stock 42mm TBI units flow around 450cfm which if you look at http://www.carburetion.com/calc.asp a stock 350 even with a cam upgrade to increase the powerband to 5500 rpms isn’t going to use much if any more than that stock throttle body.

What are the specs for a TBI crate engine?

4. The cam in the TBI engine is just plain AWFUL. Specs on Stock TBI cam is .050″ tappet lift (intake/exhaust) is 165/175; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is .382/.402. I got those specs right off the Jegs website selling the new GM replacement TBI crate engines.

What kind of car was the Chevy TBI in 1987?

Amazon.com: 1987 1988 1989 CHEVY GMC TBI THROTTLE BODY TRUCK / SUBURBAN w/7.4L / 454c.i. V8: Automotive

What was the year of the Chevy TBI throttle?

1987 1988 1989 CHEVY GMC TBI THROTTLE BODY TRUCK / SUBURBAN w/7.4L / 454c.i. V8. If you are not sure about your application please don’t hesitate to contact our sales/tech dept by emailing us and we will gladly help you.

From 370-440hp you need to bump the fuel pressure up on the 454 injectors to the 15-18psi to increase their flow rate to 100lb/hr.

Can a GM Vortec 4.3L be used for TBI?

GM ran out of valve covers in 1993 and put vortec 4.3L valve covers on both engines. CAMS are expensive and on a TBI 4.3L is only going to gain you about 15hp from 3000-5500 and lose that much below 2500 rpms. So START with a vortec 4.3L and run TBI on it.

How to troubleshoot your TBI fuel injection system?

Troubleshooting your TBI Fuel Injection System Most of the problems encountered while installing your fuel injection system or after a time of operation are very simple. If your check engine light is on you more than likely have a hard fault meaning something is grounded out, unplugged, operating out of range or has gone bad. See

How big should the baffle be on a TBI truck?

The air cleaner. http://www.thirdgen.org/newdesign/tech/ultimatetbi.shtml The baffle on the TBI Truck is too small for a 2.8L V6 much less a 5.7L V8. Or you can run with a 3″ tall 14″ diameter open element filter with a flat base.

What kind of truck starts and then dies?

Forgot to mention this is a 1995 K1500 5.7 with TBI. When it first start if you give it some gas dose it stay runing?? My 2001 suburban did this it would start and die.

What kind of scan tool do I need for GM TBI?

A scan tool can be used and set up for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition. If you have access to a scan tool use a hook up for a 1990 350 cu. in. 5.7L Chevrolet truck.

What kind of engine does a Chevy Blazer have?

This engine combination would be outstanding in your car, suburban, blazer, RV, van, truck, or 4X4 application. These engines are built with the seasoned heavy-duty Chevrolet small block.

What should the idle speed be on a GM TBI?

Insert a T-30 size Torx driver into the Idle adjustment screw that is located behind the plug removed earlier. Turn the screw to adjust the idle speed to 650 RPM +/- 50 RPM. Turn off the engine and disconnect the negative battery terminal from the battery using a wrench.

How does the GM TBI fuel injection system work?

The GM TBI (Throttle Body Injection) system uses a pair of low pressure fuel injectors mounted above the throttle body opening. Unlike a port fuel injection system, that sprays fuel into the intake manifold runner just above the intake valve, the injectors in this system spray fuel directly into the throttle body above the throttle plate.

What kind of Van is a Chevy G20?

Both are passenger-oriented vans with factory-installed windows. Each nameplate offers three series- Chevrolet the G10, G20, G30 and GMC the G1500, G2500 and G3500. The series correspond roughly and respectively to the outmoded half-ton, three-quarter-ton, and one-ton identifications.

Is the 91 TBI 350 a good car?

Anyhow, it ran good at very light throttle, and wide open, but there is still significant stumble in the mid throttle range. I drove it around for 20 minutes or so through the neighborhood and on the highway and it did not change it’s behavior at all (for better OR worse). I got home and shut it off.

Where is the idle plug on a GM TBI?

Plug the vacuum lines with golf tees or other suitable item. Remove plug over the idle screw located on the right front of the throttle body by using a hammer to drive a punch into the plug and then using the punch to pry the plug out of the throttle body.

Can a 5.7L Vortec start a suburban?

I have a Suburban with a 5.7L Vortec and is hard to start after sitting for a while. It takes maybe 12-15 long cranks to finally get started, and once it is started, it restarts just fine (like on errands and driving around town, to work and back during the day).

Why is my GMC pick up not shifting?

Beside the CHECK ENGINE LIGHT (CEL) being on and driving you nuts, your Chevy or GMC pick up (or SUV or van) may be experiencing one or several of the following symptoms: TPS diagnostic trouble codes (DTC’s) stored in the vehicle’s computer’s memory. Really BAD gas mileage. Transmission does not shift out of second gear.

What should the air flow be on a 350 TBI?

On the average 350, I like a intake runner in the 165-180cc range and I like my air flow at.500″ lift to be at least the 225cfm that a vortec head flows. Stock TBI head flows around 175cfm.

Why does my TBI 350 have zero power?

This weekend I put a new idle air control valve and o2 sensor in, and the symptoms still persist. Along with the erratic idle, the engine has absolutely zero power. It stumbles as if it’s missing a couple of cylinders when you accelerate.

Is there a lift up spring on a TBI?

Spring is known to break on them. take the torq screws out of the top of the TBI and lift up regulator is in the back check spring. ill have to check that out, new idea i havent heard yet.

What kind of engine does a Chevy small block have?

These engines are built with the seasoned heavy-duty Chevrolet small block. This unleaded fuel-compatible engine comes completely assembled, with valve covers, timing chain cover, oil pan, harmonic balancer, flex plate and throttle body fuel injection intake manifold.

Do you need an adjustable fuel pressure regulator for a TBI system?

Keep in mind that the HEI distributor is likely wider and taller than your stock unit, which will be a problem if your engine is close to the fire-wall. The TBI system uses fuel pressures far in excess of what a carb requires, so you’ll need to install an adjustable fuel pressure regulator into the existing line.

How much air flow does a TBI motor have?

But you can do those ultimate mods since they are free and will give you good air flow up to about 270hp or about anything you can build with the stock TBI heads. If your going going to build a motor for over 270hp then you need more then the ultimate mods.

Can a TBI be used as a return line?

These fittings are not suitable to use as a return line because they have an orifice in them and restrict the flow of fuel back to the tank. If you have installed your return line to a “vent” line you will need to route the return line in a different fashion. Fuel pressure on a TBI unit should stay constant under all throttle conditions.

What causes a Chevy truck to turn over but not start?

Plenty of turn over speed. With a test light there’s voltage at both sides of the coil but NO spark. Voltage at the throttle body injectors but NO fuel sprays. Fuel pump pumps. NO spark and NO fuel, turns fine. Rotor button turns, cap and rotor clean. Under the dash at the fuse panel there’s no voltage on the crank fuse.

What causes a TBI 350 to run rich?

A deffective fuel pressure regulator can cause excessive fuel flow also. Do you know what the fuel pressure is? An incorrect fuel pump (hi pressure vs. low) could cause rich running, you should see approx. 13 psi.

Do you know what the fuel pressure is on a TBI 350?

Look at the fuel flow from the injectors with the engine running, shuld look like a fine cone shaped mist, a bad injector can stick open and flow a heavy stream of fuel. A deffective fuel pressure regulator can cause excessive fuel flow also. Do you know what the fuel pressure is?

How to test the fuel pump on GM TBI fuel systems?

One method involves removing the fuel filter and using an adapter, that has a Schrader valve on it, in its place. You then connect your fuel pressure test gauge to this adapter. The other method is to use an adapter between the throttle body assembly and the pressure line.

Where is the fuel injector on a GM TBI?

What kind of Head do I need for a 350 TBI?

Another good reasonably priced set of heads that will work nicely without special intakes on a TBI motor is a set of Summit Racing aluminum heads. Great flow number and stock TBI or aftermarket TBI intakes will bolt right on saving you some money. 50 state legal and better flow numbers than vortec heads.

Why does my GMC Sierra 1500 not start?

Happened before, I gave it air, it started, thought bad filters, then noticed no umph in acceleration, leads me fuel line or bad plugs, not burning fuel. Checked carb, It’s not wet this time, leads me to fuel.

What should fuel pressure be on 1993 Chevy TBI?

Verify there is 18-20 of fuel pressure when you dead head the fuel pump. If low, verify there is good power and ground to the fuel pump and that the fuel filter is clear. Also, make sure that the MAP sensor vacuum port in the throttle body is not restricted.

Why does my 1993 Chevy TBI stall at idle?

Timing is steady and not jumping all over. It is a fuel issue. The only code that ever sets is a P044, lean exhaust, and the exhaust is really lean. We have swapped PCM/PROM with a same year Suburban, no change. Both vehicles run the same as this did using the other’s PCM.

Where are the fuses on a 1993 GM 4.3L?

In the table below you’ll find the fuse location and description of the fuses of the fuse box on 1993 4.3L, 5.0L, 5.7L TBI equipped 4.3L, 5.0L, and 5.7L pickups. IMPORTANT: The fuse box illustration and fuse descriptions cover the vehicles in the ‘Applies To:’ box on the right column.

How to fix a 1990 Chevy 5.7L TBI fuel problem?

It ran long enough to drive up on the trailer while under its own power and it also drove off the trailer on its own power (not that same day I brought home) but you did have to keep foot on throttle otherwise it would stall out and not start again until the next day. 1. New Fuel pump 2. New Fuel filter 3. New Fuel pump relay 4.

Is there a 5.7 liter Chevy engine diagram?

5.7 liter chevy engine diagram – here you are at our website. At this time we are excited to declare that we have found an extremely interesting topic to be pointed out, that is 5.7 liter chevy engine diagram.

What was the horsepower of a 1990 Chevy 5.7?

This engine was capable of up to 380 horsepower at 6,200 rpm, torque of 370 foot-pounds at 4,500 rpm and had a bore of 4 inches, stroke of 3.48 inches and a 9.3:1 compression ratio. Working out of the Pacific Northwest, Martin Woodfield has been writing professionally since 2000.

Is there a problem with my 1990 Chevy truck?

I just recently purchased a 1990 Chevy 2500 single cab long bed with the 350 tbi that has been D.O.T inspected until 2018 in MN. The issue – it has a fuel delivery problem and the previous owner was fairly certain that it needed a fuel pump and I wasnt surprised cuz ive had to do that with past 90s gm trucks.

Why is my TBI fuel injection light on?

What was the bore and stroke of a 1987 Chevy 454?

Bore and Stroke In 1987, the 454 had a bore of 4.25 inches, and a stroke of 4.00 inches. When discussing an internal combustion engine, bore refers to the diameter of the engine’s cylinders, which house a moving ring-and-piston assembly, and stroke refers to the distance that the pistons inside the cylinders move from top to bottom.

Where does the vacuum leak come from on a TBI?

There are instances where the vacuum leak is coming from the adapter plate used to attach the throttle body to the manifold. If this is the case make sure that the seal is positive between the manifold and the adapter plate; also between the adapter plate and the throttle body.

What kind of engine does a 1987 Chevy Blazer have?

1987 Chevy Blazer Selling my 1987 four wheel-drive Blazer. It has a 383 stroker motor with about 3000 miles New transmission … more 1987 K5 BLAZER 4X4 ONLY 82K ORIGINAL MILES. OVERDRIVE AUTOMATIC TRANSMISSION. FUEL INJECTED V8 350. ICE COL… more

What was the factory manual for a 1956 Chevy truck?

1956 Chevrolet Truck Factory Shop Manual Supplement Covering the following 1956 Chevy Trucks: 3100 3A Pickup, 3100 3A Cab & Chassis, 3200 Pickup, 3400 Truck, 3500 Truck, 3600 Pickup, 3600 Cab & Chassis, 3700 Cab & Chassis, 3800 Pickup, 3800…

Are there any small block engines that are TBI compatible?

These are 3 TBI Compatible recommendations I have for small block Chevy engines. good performing reliable setups that won’t break the bank to bad and are good fuel efficient designs as well.

How long does it take to get a TBI engine?

Typically takes a couple days to come in and doesn’t cost that much more. PLEASE PLEASE don’t complicate TBI with MSD or any other ignition boxes. They do not work well with TBI and can possibly cause a LOT of issues. Best just to avoid that type upgrade altogether.

What’s the problem with my Chevy 1500 4by4?

NO VACUM LEAKS PLUGGED BOOSTER HOSE SHOT CARB CLEANER ON INTAKE BUT SAME PROBLEM.ONCE ENGINE DIES AFTER FIRST COUPLE OF MINUTES IT DIES OUT IN ABOUT 20 SECONDS IF STARTED UP AGAIN IT WILL DO THE SAME THING DIES OUT I N ABOUT 20 SECONDS. I CLEARD THE TROBLE CODE FOR THE TPS AND IT DID NOT COME BACK ON SO NO TROBLE CODES I AM STUMPED………

What kind of truck is the C / K series?

Formally called the Chevrolet C/K, C/K is a series of trucks manufactured by General Motors and marketed under the Chevrolet and GMC brands. The C/K line includes pickup trucks, medium-duty, and heavy trucks.

What causes a vacuum leak in a fuel injection system?

Vacuum leaks are the leading cause of installation issues with your fuel injection system. Check all sources of potential vacuum leaks including components not related to the fuel injection system. There are instances where the vacuum leak is coming from the adapter plate used to attach the throttle body to the manifold.

How to repair a 1988 GM vacuum truck?

Access our GM Full-Size Trucks 1988-1998 Vacuum Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles. Enter your vehicle details. Click the “View More” button, and then click “Vehicle Repair Guides.”

What was the year of the 1988 GM Truck?

Fig. 6: 1988-89 (VIN K) R/V series with 5.7L, AT, Calif. Access our GM Full-Size Trucks 1988-1998 Vacuum Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account.

What kind of engine does a Chevy truck have?

I love this truck, and I wanna fix it. Truck—95 ext 1500 5.7 2wd/auto. 295000mi. Eng/trans replaced @ 217k with GM crate350/SERTA 4L60

Where can I Find my GM trouble code?

If you own a 1982 to 1995 GM car or truck, you just might be able to read your trouble codes for free! If you have a connector like this under your dash, read on… (note: this connector may have a black plastic cover over it, so also look for a cover shaped like this, sorry for the messy wires here)

What is part code for GM TH350 automatic transmission?

When paired with an aftermarket TCC control unit, these can be desirable transmissions, and up to 10% more efficient at cruising speeds. The conventional TH350 had part codes of M33, M38 & M39. The TH350C had codes of MV4, MX2, MX3 & MX5.

What is the code for service engine soon?

In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light. A Code 12 consists of one flash, a short pause, then two flashes in rapid succession. 2.

How big is the vacuum gauge on a TBI?

Vacuum gauge. Simple mechanical gauge. Hook it to all ports on that throttle body. When you get to the map port just move map to a different port on the throttle body. Typical TBI motor will idle with 20-21 inches of vacuum stock.

What should fuel pressure be on a TBI fuel injection system?

Fuel Pressure is critical to the operation of a fuel injection system. Always check to insure that you have the proper fuel pressure. Fuel pressure should be a constant 10 – 15 PSI on a TBI fuel injection system and is typically around 12 – 13 psi. Higher pressure than 15 psi indicates that there is an issue with the installation.

What makes a 95 TBI Chevy run crappy?

2–EGR….did you use the VIN # and go to the dealer for the correct one? to test it ,disconnect the vacuum line and plug it and go for a ride. 3–When I removed the cat on mine ,the 02 sensor set the check engine light on and was going thru more gas but didn’t run crappy.

How to repair a 1988 GM Truck wiring diagram?

Access our GM Full-Size Trucks 1988-1998 Wiring Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles. Enter your vehicle details.

What’s the tach needle on a Chevy truck?

New plugs, wires, cap n rotor again. Fast forward to middle of March. Truck begins to act up at times…and the tach needle flutters like crazy I mean, part throttle/no load/30mph and it’s jumping from 1000rpm to 3500 like a bouncing ball.

What’s the gas milage on a 95 TBI?

Finally, when it dieseled, it threw a CTS code stating that a temp of -40f was indicated (in Houston TX). Replaced the CTS, problem went away, and my gas milage went to 17 mpg (no joke) on a 5.7 TBI with 200k miles. Beat it to fit. Paint it to match.

What are the problems with a 1990 Chevy c1500?

Unresponsive to gas peddle at times and has major dead spots. not sure if its the injectors or the timing or if i need a tps sensor Clicking this will make more experts see the question and we will remind you when it gets answered. problems so far: injectors shot turck was pissing gas the second the lines pressurized. 2. TPS code 22 low voltage 3.

What should I do about my GMC 5.7L TBI?

According to my data, the 5.7 uses a vacuum advance unit on the distributor. Try blocking off the vacuum source temporarily to see if the roughness goes away. (could be over-advancing). If that doesn’t seem to help, try the same with the EGR valve. (too much air, not enough fuel when cold).

Why does my 440 Mopar make a rattling noise?

MY 440 mopar runs incredible at idle to 1500 rpm, but around 2000 rpm, the engine becomes overcome with loud rattling, noise, thousands of “rocks gone wild” come from the engine or transmission. It sounds like the motor is falling apart.

Why does my car make a knocking noise when I idle?

Loose torque converter-to-flywheel or flywheel-to-crankshaft bolts will sound similar to bearing knock. This condition produces several raps during quick acceleration on a free running engine. Depending on the idle smoothness, when the transaxle is in gear, the noise may or may not appear.

Why does my Buick Regal make a ticking noise?

You need to drain all the fuel, Low cylinder pressure means engine needs to come apart to fix it. 2001 buick regal gs just started making a ticking noise.weather outside is over 100 .Engine part closest to drivers seat started smoking.Have heard reports of engine fires with this model.

What causes hesitation and stumbling in a 1990 Chevy c1500?

An expert that got 10 achievements. Re: 1990 chevy c1500 hesitation and stumbling during… Based on what you said, I would say the engine is starving for fuel. The computer has to be disabled to set timing – there should be a procedure for that. I would start with checking fuel pressure at the throttle body.

What is the TPS code for a 1990 Chevy c1500?

TPS code 22 low voltage 3. MAP code 34 low voltage. 4. IAC valve stuck. 5. timing is off. problems fixed so far. 1.

What makes a’91 TBI 350 surging at idle?

It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle. If I had to guess, I’d say it’s a dirty throttle body, or possibly injecters. If it is one of these, what would be the best way to clean them?

What was the throttle body on a 1994 Chevy CK?

Chevy CK Pickup 7.4L 1994, GM Original Equipment™ Throttle Body Idle Air Control Motor by ACDelco®. Bring your vehicle’s fuel system back to its top shape with this top-notch part.

What kind of gasket does a 1994 Chevy CK have?

Chevy CK Pickup 1994, Fuel Injection Throttle Body Mounting Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering…

How does the GMC 5.7 liter TBI engine work?

Port the cylinder heads. This allows exhaust to escape the cylinders faster by removing metal from the engine where the exhaust manifold meets the cylinder heads. Exhaust gases can then move in a direct path to the exhaust manifold rather than having to bend around a corner to escape the cylinder.

What kind of engine does a Chevy k1500 have?

Installed in my 1992 K1500 and followed all break in instructions. The engine is just right. Nice smooth with a tick of lope at the tailpipe. Strong bottom end and mid range torque great for towing. The 310 HP is a nice upgrade from the 200HP factory engine. I am sure happy with my choice to go with Fivestar Engines.

Where do I find the trouble code on my GM Truck?

To retrieve trouble codes from your GM fuel injection system, install a paper clip, jumper wire, or any conductive tool you can find between the “A” and “B” terminals on the ALDL diagnostic connector that you installed in the passenger compartment. You can buy a metal tool at most auto parts stores for about $2.

What kind of diagnostic tool do I need for GM TBI?

The ALDL connector allows for full diagnostics of your unit. A scan tool can be used and set up for a GM TBI application to read the data, or to check for stored codes. Consult a service manual or see below for any check engine light code definitions. You can use a late 80’s or early 90’s GM TBI definition.

How do you get a code 12 on a TBI?

Putting these two numerals together gives you a code 12. To practice reading codes, even if the ECM is not telling you of a problem, you can always get a code 12 with the key in the run position and the engine off.

Why does my 1990 Chevy Silverado not start?

My 90 would not start if the vacuum line to the MAP sensor was disconnected. The MAP is located behind the TBI. Be sure the vacuum hose is in good shape. Mine has to be replaced as the glue no longer worked and it leaked. If you have a vacuum pump, make sure the MAP can hold a vacuum or it needs to be replaced.

What kind of car is 1991 Chevy Suburban?

42 people found this helpful. I have a fully restored 1991 Chevy Suburban that has fresh engine transmission rear end paint interior and I have left nothing undone or unrefreshed. About 3 months ago it quit running cold in Houston and had to have it towed back to Dallas. For all parts below I acquired all parts thru O’Reillys Auto Parts.

What happens if you have a bad ECM in your car?

Since the ECM controls your air to fuel ratio and transmission, a faulty unit can cause your gas mileage to drop through the floor. It can also make your car sluggish, or give you trouble when going up hills or suddenly accelerating. If your vehicle used to run well but is suddenly having problems in these areas, you probably have a faulty ECM.

Why is my Trans bad on my 4L60E?

Trans seems noisy when moving in 1st and Reverse, noise goes away instantly if you shift to N or the transmission goes into 3rd gear: Reaction planetary is worn out due to high miles or insufficient lubrication. Not a critical failure, but not a good sign either.

When did TBI chips throttle body injection start?

Welcome to TBI CHIPS throttle body injection services. So Just what is TBI, stands for Throttle Body Injection used by GM in the early 80’s through 1995. The early systems from 1982-1986 are just too old to do much with. 1987-1991 were still SLOW computers with tiny chips limiting what can be done with the system.

Can a GM TBI be used for fuel injection?

TBI Fuel Injection Conversion using a GM TBI EFI system! One of the most popular EFI conversions to older Chevy engines or any engine for that matter is the GM TBI system using the 1227747 ECM. There are many others that will do the same thing but the 1227747 is most well known and documented and will be the basis for this article.

What kind of body injection does a GMC truck use?

Throttle Body Injection | Chevy GMC TBI Trucks | GM TBI Chevrolet New and Remanufactured Throttle Body Assemblies for 305, 350, 454 Chevy, GM, GMC Trucks, Cars, Vans and 6 Liter and 7 Liter Trucks.

What do you need to convert a TBI to a carburetor?

The most basic things you’ll need to convert from TBI to a carburetor is a carb and a matching manifold. You could try to track down a used stock manifold, but aftermarket aluminum manifolds like the Performer RPM make more power, are lighter and will only run you about $60.

Throttle Body Injection | Chevy GMC TBI Trucks | GM TBI Chevrolet New and Remanufactured Throttle Body Assemblies for 305, 350, 454 Chevy, GM, GMC Trucks, Cars, Vans and 6 Liter and 7 Liter Trucks.

How much horsepower does a 350 ci Chevy have?

These vehicles featured a 350 ci, 5.7 small block Chevy with TBI (throttle body injected) EFI system and swirl port heads. Producing up to 210 hp in factory spec, this engine can also be retrofitted into an older car with a performance carburetor to produce up to 250 hp.

How many MV does a 1993 Chevy TBI have?

Even now it seems on the lean side, but will for a while have one 02 crosscount before the 20 second lean PCM clock expires throwing it into open loop. The 02 MV hot will frequently hang down around 56 MV to 156 MV and never cross over to rich for a long time.

What was the name of the 1987 Chevy Silverado?

In 1987, the name “Silverado” described a trim package, or set of options, available for the Chevrolet C/K Half-Ton pickup truck. The Chevy SIlverado became its own model in 1999, when it replaced the Chevy Half-Ton. There were five trim package levels offered in 1987, including the Custom Deluxe,…

What kind of transmission did a Chevy pickup have in 1987?

There were two manual and two automatic transmission types offered for Chevy pickups in 1987. Both of the manual transmissions were capable of four speeds and one of them had the option for overdrive. The automatic transmissions came with either three or four speeds.

When was the first TBI fuel injection system made?

The early systems from 1982-1986 are just too old to do much with. 1987-1991 were still SLOW computers with tiny chips limiting what can be done with the system. However, these systems were primarily used in the 1987-1995 pickup trucks and so they still work fine for low rpm truck applications.

When did GM start using throttle body injection?

So Just what is TBI, stands for Throttle Body Injection used by GM in the early 80’s through 1995. The early systems from 1982-1986 are just too old to do much with. 1987-1991 were still SLOW computers with tiny chips limiting what can be done with the system.

What’s the problem with my Chevy 350 TBI ignition?

The engine runs smooth sometimes and runs horribly bad at others like it is severely out of time, backfiring through the throttle body. I replaced timing chain, injectors, tune-up and fuel pressure regulator. The mechanic changed out the computer, distributor and checked the ignition and MAP sensors. The problem persists.

What should the volts be on a Chevy 350 TBI?

It should read about 3.5-4.5 volts with the engine off. With the engine idling the Map should put out about 1 volt. If you suddenly snap the throttle open it should go towards 3.5 or 4 volts followed by a reading of about .6 to .8 during decel (after blipping the throttle).

How does the TBI fuel injection system work?

Your TBI fuel injection system fueling is “triggered” from the ignition system. It is assumed that the coil is operational, a 12 volt ignition 1 (IGN1) source is connected to the positive terminal of the coil for external coil applications or to the positive slot for coil in cap applications. Remove plug wire and check for spark while cranking.

What are the symptoms of a faulty pickup coil?

What are the symptoms of a faulty pickup coil (inside the distributor) or is this more likely just an ignition maintenance thing where I just need to replace cap and rotor. Thanks. I have a Suburban with a 5.7L Vortec and is hard to start after sitting for a while.

What does GM OBD I trouble code chart mean?

GM OBD I Trouble Code Chart Code Description Code 12 No distributor reference pulse (diagnost Code 13 Oxygen sensor circuit open or no activit Code 14 Engine coolant temp sensor error (high t Code 15 Engine coolant temp sensor error (low te

How to read Trouble Codes on 88-95 GM cars and trucks?

To read the trouble codes when your check engine light comes on on one of these old cars, you just need to put a paperclip in between two terminals, and then turn the ignition on, and the check engine light will flash the code, which you can interpret to find out what is wrong with your engine.

What kind of diagnostic pinout does a GM car use?

Most GM cars produced in 1996-2003 use J1850-VPW interface. GM cars produced in 2003-2006 use J1850-VPW interface or CAN. Most cars produced after 2006 are equipped with CAN bus. Since 2002, there is another pinout – GM-LAN (for vehicles equipped with CAN bus)

What’s the diagnostic code for a s 10 engine?

F for at least 4 seconds after the engine had been running for 2 seconds. 16 – System voltage high – Charging system voltage was either below 9 volts or above 17 volts for 10 seconds.

Where is my OBD2 port on my Chevy S-10?

OBD2 port Chevrolet S-10 (1994 – 2004) – Find your plug ! Where is my OBD2 port ? All vehicles are equipped with an OBD port to which you can connect your klavkarr diagnostic case.

How to read scan codes on a 1994 GM?

Bend a small metal paperclip into a “U” shape. Insert the pointed ends into the furthest two top-right diagnostic connector terminals. After bridging the two top right terminal connections on the diagnostic connector, switch the ignition to the “ON” position. Watch the “Check Engine” light on your dashboard.

When does a S-10 engine signal is too high?

33 – MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle opening was under 2%. 34 – MAP sensor signal voltage low – MAP sensor signal voltage was too low (high vacuum) when engine speed was over 1200 RPM, or the throttle angle was above 21% when engine speed was over 1200 RPM.

1973 – 1987 Chevy Truck Specs, Engines, transmissions, transfer cases, and rear ends, gear ratios – Chuck’s Chevy Truck Pages Chevrolet truck VIN numbers deciphered. Charts showing engines offered.

These vehicles featured a 350 ci, 5.7 Small Block Chevy with TBI (throttle body injected) EFI system, and swirl port heads. Producing up to 210 hp in factory spec, this engine can also be retrofitted into an older car with a performance carburetor to produce up to 250 hp.

What kind of EFI system do I need for a TBI engine?

TBI Fuel Injection Conversion using a GM TBI EFI system! One of the most popular EFI conversions to older Chevy engines or any engine for that matter is the GM TBI system using the 1227747 ECM.

What is the Green Line on a Chevy TBI?

The green line is the vent line that goes to the tank. You have three lines attached to the tank: fuel line, fuel return line and ventilation. The vent line is missing on cars with ventilated gas tank caps. Due to a cam change I am short on Vacuum at idle.Is there a way to add a vac pump in the system to solve this problem.

What are the specs of a 1992 GMC Sierra 3500?

The table below shows all 1992 GMC Sierra 3500 specs by style, including MPG (fuel economy), transmission details, and interior and exterior dimensions. Additionally, find 1992 GMC Sierra 3500 warranty and reliability information, such as limits on bumper-to-bumper coverage and major components.

What kind of fuel pump does a TBI 454 have?

Stock TBI 454 makes 230hp and 380tq so stock fuel pump is maxed out right off and a typical 454 will run better with a fuel pump upgrade even with stock chip. GAS MILEAGE. Always a big complaint with 454 TBI trucks. 90 and older is particularly bad and that is largely due to NO OVERDRIVE.

What kind of engine does a 1992 Chevy truck have?

C3500 The 1992 Chevrolet C3500 truck featured a 5.7-liter V8 engine capable of producing 190 horsepower at 4,000 rpm. All models came standard with a five-speed manual transmission and a fuel tank that could hold a maximum of 34 gallons of gas.

What makes the Chevy 454 7.4L engine unique?

The return of the 231 V-6 to General Motors cars in the mid-1970s proved that fuel efficiency could be achieved in compact engines. But in 1988, Chevrolet introduced Throttle Body Fuel Injection to the 454. It was the same TBI system used on small-block V-8s and the V-6s. Fuel efficiency increased and the TBI system remained until 1995.

When to replace a Chevy c1500 throttle body unit?

AutoZone carries replacements to restore your confidence in your truck. Hitting the gas should open the valve in a throttle body unit for Chevy C1500. If there’s a clog or other defect, there isn’t enough air mixing with the fuel going into the combustion chamber, and flooding, stalling and poor fuel economy are the result.

What kind of TBI does a Chevy 350 have?

This is a complete ready-to-run hot system. Best TBI Mild to Hot Street. This Chevy High Performance engine is built from our Dyno Tested and road proven package, which Dyno tested at 412 ft/lbs torque for the 375HP. Your specific engine can be Dyno tested for an additional charge.

When did the third generation Chevy engine come out?

The Chevrolet 235-cubic-inch is known as one of the great Chevrolet engines, noted for its power and durability. It was gradually replaced by the third generation 230, beginning in 1962.

When did Chevrolet stop using the straight 6 engine?

Unsourced material may be challenged and removed. The Chevrolet straight-six engine was Chevrolet’s sole engine from 1929 (when it replaced their 171-cubic-inch (2.8 L) inline-four) through 1954, and was the company’s base engine starting in 1955 when they added the small block V8 to the lineup.

What to do about a 1995 Chevy K 350 TBI?

Re: I have a 1995 chevy k 1500 350 tbi it hesitates when… Replace the distributor, $50. on line, the trigger coil wire is shorting out. The 50 bucks was well worth it. 10 mins truck ran great after that was done! You can’t post conmments that contain an email address. An expert who has achieved level 1.

Where can I buy 1987 Chevrolet body parts?

RockAuto ships auto parts and body parts from over 300 manufacturers to customers’ doors worldwide, all at warehouse prices. Easy to use parts catalog. 1987 CHEVROLET Parts | RockAuto

When did the Chevrolet small block engine come out?

(LT5) The Chevrolet small-block engine is a series of V8 automobile engines used in normal production by the Chevrolet division of General Motors between 1954 and 2003, using the same basic engine block.

When did Chevy start using 17 digit VIN numbers?

From 1981 – 1987 Chevy Trucks used a 17 digit VIN#. If your 1973 – 1987 body style has a VIN# located on the dashboard, with 17 digits, then it is between 1981 and 1987 model. If your truck has the VIN# on the dash, but it is not 17 digits, then it is a 1979 or 1981 model.

What makes a 91 Chevy surging at idle?

My father in law’s ’91 Chevy was running poorly, so we put new plugs, wires, cap and rotor on it, and it’s running better, but it it still surging at idle. It basically almost dies out, and then surges back to life (probably a little higher than normal idle), then repeats continuously until you apply some throttle.

Is the 5.7 liter TBI engine modifiable?

by Jen Davis. The 5.7-liter V-8 TBI engine was installed in a variety of different General Motors vehicles. This small-block V-8 is one of GM’s most modifiable motors and can be altered to provide extra horsepower without having to undergo a major overhaul or rebuild.

When to change the TBI pump in a car?

Nice thing about the Actron gauge is the hose is long enough that you can watch it while you drive. If the fuel pressure drops more than 1 psi under 8-10 seconds of full throttle the pump should be changed and dont put the stock TBI pump back in even if your engine is stock.

How does the TBI system work on a car?

TBI being a MAP sensor based system will see the leak just like opening the throttle blades and will feed the leak and then you have a high idle. Finding the leak can be tricky as it can be the intake gasket on the bottom side if you are using a Chinese junk carb intake or you weren’t real careful putting the intake on.

Spring is known to break on them. take the torq screws out of the top of the TBI and lift up regulator is in the back check spring. ill have to check that out, new idea i havent heard yet.

Why does my GMC TBI stop running after 3 seconds?

I’m thinking that 3 seconds of running is while the “after start” fuel enrichment is present, after that the mixture goes too lean for a cold engine/manifold. That could be because either the IAT or ECT is reading too high. Since this has a MAP sensor, I assume it does not have a MAF sensor.

Why does my 91 Chevy 1500 die at idle?

WORKING ON MY 91 CHEVY 1500 4BY4 . MY PROBLEM IS THE MOTOR DIES AT IDLE IT HAS THE 5.7 TBI. WHEN YOU LET THE MOTOR WARM UP IT WILL JUST DIE OUT AFTER ABOUT 5 MINUTES IDLE TIME BUT WILL START RIGHT BACK UP THEN DIE AGAIN MAYBE 2 MINUTES LATER. IF I PUT IT RIGHT IN DRIVE AND GO IT WILL RUN FIND UNTIL I HAVE TO STOP THEN IT WILL DIE OUT AGAIN.

Where does the fuse come from on a 1992 Chevy truck?

The purple wire at the starter solenoid, should be hot with the key in the crank position. My info shows more than one circuit at the starter S terminal, feed for the crank fuse, comes from the S terminal by way of the ignition switch, in crank position.

Do you need aftermarket cams on a 4.3L TBI?

On the 4.3L cams you will need to know if your engine has the balance shaft or not but Although I dont recommend putting aftermarket cams in the 4.3, here is the usable 4.3L cam list.

Where is the fuse box on a 1993 TBI?

F for at least 4 seconds after the engine had been running for 2 seconds. 16 – System voltage high – Charging system voltage was either below 9 volts or above 17 volts for 10 seconds.

What did I do with my 1988 Toyota S10?

The vehicle is old and worn, but didn’t burn oil. Before it died there was an issue with chugging, it would shake and buck and rattle the whole drivetrain real bad. I replaced the fuel filter and put some Sea Foam in the fuel and it settled down some but didn’t stop chugging completely.

What kind of fuel spray does a 1988 S10 use?

1988 S10 2.5 TBI, 5 speed. No fuel spray from injector. Got this for my step son who is 1st year electrician apprentice. The vehicle is old and worn, but didn’t burn oil. Before it died there was an issue with chugging, it would shake and buck and rattle the whole drivetrain real bad.

Where to spray starting fluid on GM TBI fuel system?

Spray starting fluid down the bore of the throttle body. When you have sprayed a good squirt of starting fluid, quickly place the air filter assembly’s cover back on. IMPORTANT: Placing the cover back on the air filter assembly is important because it’ll prevent any back-fire, that may occur, from spouting flames out of the throttle body.

Is there no fuel from injectors to start truck?

No fuel from injectors to start truck. When I try and start my 93 Chevy Cheyenne k3500 no fuel come out of the injectors. If I use starting fluid the truck starts and the injectors work great. Has died a couple times while driving, but mostly runs fine and then won’t start one turned off.

What causes PCM to disable fuel injectors?

@jrt2020 , Josh, The anti-theft system (Pass Lock) failure will mimic this, as anti theft tells PCM to disable the fuel injectors.

What do you need to know about 1988 Chevy truck wiring?

Each part should be placed and linked to different parts in particular manner. Otherwise, the structure will not function as it ought to be. To be able to be certain the electrical circuit is constructed properly, 1988 Chevy Truck Wiring Diagram is required.

What causes a 1989 Chev crew cab to stall?

I have a 1989 v3500 chev crew cab with a 454. Started stumbling at low throttle, stalling when I came to a stop or any low rpm activity. Checked for vaccuum leaks, reset base idle, tested sensor components, ran Win aldl diagnostics, could not get it to run right.

What was the new Chevy C10 in 1988?

With the first major redesign in over a decade, fourth-generation (1988-98) Chevy C-Series pickup trucks continued to advance Chevy trucks into the modern era. Boasting standard features like fuel injection and a boxed steel frame, the new Chevy C10 trucks offered improved reliability and performance.

Which is a better TBI pump Vortec or TBI?

Put the 1996 Vortec EP381 pump back in. MUCH better pump than the EP386 TBI pump. Now to the too much fuel. First check the number 3 and number 4 spark plug electrodes as those cylinders always run off a different injector. The coloring should match on these plugs.

What does the Chevy TBI performer manifold do?

The Chevrolet TBI (throttle body injection) Performer manifolds are dual-plane, low-rise intake manifolds with a 180° firing order and a patented runner design that delivers outstanding performance with crisp throttle response. This patented design greatly improves torque over a wide rpm range, especially off-idle through 5500 rpm.

Why is vacuum plugged off on 1993 Chevy TBI?

EGR vacuum is plugged off because EGR diaphram has a leak. I pulled EGR to inspect days ago, and pintle spring has good tension holding valve completely closed, not leaking at all. I know the EGR will richen mixture a little on a hot engine, but that is not the problem.

Where does the injector pulse come from in a truck?

I guess no one reads….injector pulse comes from ecm..via ignition module..pickup coil.Once ecm senses 400 rpm,s from engine it takes over. But injectors pulse works off of ground from ecm…you have to have the grounds at thermostat and intake or will not pulse injectors.Grounds for all sensors.

How big of a bore does a 305 TBI have?

The stock 305 and 350 TBI unit has 2 (1 11/16″) bores which flow 450 cfm of air. Up to 230hp engines that air flow is fine. you can do the ultimate TBI mods to the stock 42mm TBI unit and get that air flow up to 500cfm without increasing that bore diameter which is plenty for any 305 engine that you can run with TBI.

What’s the casting number on a TBI 305 head?

Those are the last 3 digits of the casting number on top of that head under the valve cover. These heads flow as well as pretty much any other 305 compatible head out there and respond very well to some porting and good for nearly 30hp over the TBI 305 heads.

Can a 1995 TBI be fitted with a 4.3 L engine?

In other words, a 4.3 L Engine from a 1995 will bolt in perfectly into blazers of earlier years that also were equipt with a 4.3 L engine. From what I understand the only difference may be the intake manifold, as the TBI and CPI use different types of manifolds.

How many miles does a GMC TBI 350 have?

Hey guys. So I have a 95 TBI 350 with about 190K miles on it. This started as a surging while driving at constant rpms. Very noticeable in second gear at about 25 mph. The truck has a NV3500 so the whole truck would surge.

Why is my 5.7 TBI overheating at start up?

Hey all you 5.7 TBI Guru’s, I need some help. My engine is overheating at start up until the thermostat opens, then it runs normal. the problem is it runs up to 240-250 degrees before the intake manifold gets hot enough for the thermostat to open at operating temp.

Can a GM throttle body injected TBI be used?

Many still out there with TBI vehicles needing help getting more modern power levels and fuel mileage from older GM throttle body injected vehicles without going to the process of rewiring the vehicle to run a more modern fuel injection system.

What kind of engine does a 1994 Silverado 3500 have?

The standard power plant in the 1994 Silverado 3500 dually was a 5.7-liter, 16-valve fuel-injected V-8. The engine had a 4-inch bore and 3.48-inch stroke. It developed 190 horsepower and 300 foot-pounds of torque.

What’s the difference between’93 and’94 TBI 454 engines?

I was told that beginning in ’94, the 454 horsepower rating actually increased to 255 from 230 and the ft.lbs of torque to 405 from 385. Anyone confirm or deny this claim? or explain what is the difference in pounds, if any, from one anther? Thanks in advance! I searched this site and came across the above thread.

How to reset the baseline idle speed in a GM TBI?

Turn the screw to adjust the idle speed to 650 RPM +/- 50 RPM. Turn off the engine and disconnect the negative battery terminal from the battery using a wrench. Reconnect the IAC valve. Reinstall the air cleaner and remove the paper clip from the ALDL connector. Reconnect the battery terminal after 5 minutes and test drive the vehicle.

Why is the EGR vacuum plugged off on my Chevy TBI?

MAP around 2.9v when PW 2.8MS when truck seemed to be falling a little flat under brake torque. This thing is really close to getting a carburetor on it. EGR vacuum is plugged off because EGR diaphram has a leak.

Is the Chevy K2500 a manual transmission car?

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What’s the problem with my 1991 Chevy K2500?

I have searched the forums and found similar threads but nothing seems to fix my problem. I have a 1991 K2500 with the 5.7 350 TBI. Problem is when I first start the truck in the morning (or after sitting awhile) and go to take off, it will chug, bog out, or barely go for a few seconds, then snap out of it and run fine.

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First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel pressure drops like a rock.

What tells the computer when to fire on a TBI W?

It’s a 1994. It’s the model before you could use the hand held diagnostic computer. K here is the rundown. In the distributor there is a pick-up coil under the plate on the shaft that has two wires and is plugged into the ICM (Ignition Control Module). The ICM is plugged into the coil and back to the ECM.

Can you test the GM distributor mounted ignition module?

The GM distributor mounted ignition control module (ICM), can be tested on the car or truck easily. Not only that, you don’t need any expensive tools to do it.

TBI Fuel Injection Conversion using a GM TBI EFI system! One of the most popular EFI conversions to older Chevy engines or any engine for that matter is the GM TBI system using the 1227747 ECM.

What kind of TBI is used for throttle body injection?

2. Throttle Body Injection = TBI The 4.3, 5.0 and 5.7 TBI’s are all the same CFM with 1 11/16th bores. The injectors are different sizes. The 454 is larger with close to 2 inch bores. It is recommended a TBI from about the same size engine to be used in your conversion or larger for high performance built engines. 3. TBI Wiring Harness.

What kind of truck is a 1992 Chevy?

1992 Chevrolet C1500 Short Bed Pick Up Truck This is a 2 owner 1992 Chevrolet Half ton Short Bed pickup truck The factory V8 5.0 L 305CI/700R Automatic overdrive transmission 10 bolt rear end 72,367 k original miles Options include … Power Locks Power Steering Power Windows Running Boards Sliding Rear Pickup Truck Window Tilt Wheel

Where did the 1992 GMC Sierra 1500 come from?

It is a 1989 extended cab and its has got me from Tennessee to Oklahoma now i reside in Michigan. This truck has been a blessing with back and forth home, and school mostly. Read full review The 1992 GMC Sierra 1500 has not been tested. Like what you see? Find the best deal on a GMC Sierra 1500 today. There are for sale near you.

Is the GMC Sierra 1500 an extended cab?

Very reliable transportation. It is a 1989 extended cab and its has got me from Tennessee to Oklahoma now i reside in Michigan. This truck has been a blessing with back and forth home, and school mostly. Read full review The 1992 GMC Sierra 1500 has not been tested.

Where can I test drive a 1992 GMC Sierra 1500?

Try a no-commitment, free test drive at home. Car will be dropped off (within 25 miles of the dealership) so you can safely test drive on your own. Practice social distancing and get a specific time to visit this dealer to enjoy a solo test drive. Schedule a virtual meeting with this dealer and get a video tour of this car. SL1 . RWD (0) SL2 .

What kind of gas tank did a 1992 Chevy truck have?

All models came standard with a five-speed manual transmission and a fuel tank that could hold a maximum of 34 gallons of gas. The 1992 C3500 had rear-wheel drive and a front anti-roll bar to aid handing characteristics. Rear-wheel anti-lock brakes came standard.

How many miles does a 1992 Chevy C / K 1500 drive?

No accident or damage reported to CARFAX. 1st owner purchased on 09/17/92 and owned in CA until 03/18/19 • 2nd owner purchased on 03/18/19 and owned in CA until 06/02/21. 1st owner drove an estimated 4,798 miles/year • 2nd owner drove an estimated 5,617 miles/year.

Why is my fuel injection system plugged in?

The electric fuel pump installed for a fuel injection system will draw considerable more volume of fuel from your tank than your old system did. If there are any contaminants in the tank this many times will plug up or greatly restrict the flow of fuel to the system causing many issues. Step by Step Troubleshooting guide.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

Can a Chevy k1500 TBI 350 have no spark?

No, you have to disconnect it from the ICM inside the distributor. The test lead polarity does not matter since you are measuring resistance. First off I know this is an old post but it pertains to similar issues I’m having. I have a 93 K1500 TBI 350 and it has no spark at all.

What’s the difference between no start and no crank?

It’s important to know that a no crank and a no start condition are not the same thing since this article only concentrates on testing a no start condition. In layman’s terms, a No Start Condition means that your vehicle’s starter motor is cranking the engine but the engine is not starting.

Where can I Return my GMC TBI truck?

We also pay for core returnanywhere in the continental United States. The TBI assembly comes with a FREE UPSreturn shipping label. Repack your core in the box that your TBI assembly came in, adhere the UPS label, and give to any UPS Driver or drop off at any UPS drop box.

Is there a warranty on a GMC TBI?

Most TBI’s are “In Stock”and ready for Quick Delivery. We also stock General Motors Rebushed Throttle Body Housings and have an inventory of Multi Port Injectors. All TBI’s, Throttle Body Assemblies, and Multi Port Injectors come with a Complete One Year Warranty.

What kind of engine does a GMC small block have?

Chevy small block engines, such as the GMC 5.7-liter TBI, offer vehicle owners the opportunity to increase the engine’s horsepower output because of their popularity and durable construction.

What causes a GM TBI engine to idle high?

IAC count, EGR percent,TPS etc.They all have an effect on idle speed and may not set codes in an OBD 1 system.Don’t forget a leaking pcv valve (Too obvious).Also a bad coolant temp sensor or connecter.Try wiggle test on 2 wire connecter near thermostat housing with it running.You may get lucky.Harness has been known to go bad at sensor connecter.

When to spray fuel on a GM TBI?

On a side note the ECM will note spray fuel untill it sees ~400 rpm! 8 people found this helpful. You can scan codes and live sensor data from this truck and most other GM OBD1 vehicles with the right equipment.

What kind of engine does a Chevy c1500 project have?

If you’ve been to this site before, you might be familiar with my 1991 Chevrolet C1500 project truck. Long story short, I needed to swap the V6 in the truck for another engine (it had a rod knock).