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How to run a diagnostic test on a 1993 Chevy truck?

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How to run a diagnostic test on a 1993 Chevy truck?

They will be on the end of the row to the far right, and the will be side by side. Place your key into the Chevy’s ignition and turn it, but don’t crank the engine. Watch the “check engine” light. It will start flashing. Chevy trouble codes are two digits. The first digit will be represented by a long flash.

What are the trouble codes on a Chevy truck?

Watch the “check engine” light. It will start flashing. Chevy trouble codes are two digits. The first digit will be represented by a long flash. Secondary digits will be relayed through quicker flashes. For example, trouble code 16 will be relayed with one long flash and six short ones. Write the codes down as the “check engine” light sends them.

How to clear service engine soon light 1990 to 2002 Chevy?

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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)

They will be on the end of the row to the far right, and the will be side by side. Place your key into the Chevy’s ignition and turn it, but don’t crank the engine. Watch the “check engine” light. It will start flashing. Chevy trouble codes are two digits. The first digit will be represented by a long flash.

Why do my brake lights not work on my GMC Sierra?

I have a 1994 GMC Sierra C1500 2WD with 4.3l w/automatic. It was a fleet vehicle. Plain Jane accept for High Output Heater, Limited Slip Diff and Engine Block Heater. Brake lights were working intermittently. Would come on when pedal as first depressed then go out after pedal traveled down a bit. I put in a new switch and all was well for 3 months.

Where are the brake lights on a C / K 1500?

There is a switch. I think on most C/K 1500/2500 it is on the brake pedal arm or the arm hits it. It is $5-$10; you might take ALL your truck data to the auto parts store, buy a new switch, then look for the same thing around the brake arm or under the hood. There’s a fuse. Find the fusebox and look for “brake”. The Owner’s Manual may have clues.

Why are the rear lights on my 91 k1500 not working?

I had the same problem on my 91 K1500. The most common reason rear lights of any kind will fail is rotted wires. They run through wire shroud from front to back along the inside of the frame to the left tail light. Running this way leaves them exposed to the elements.

Why is my Chevy Silverado 1500 not starting?

However, today, when the truck will crank and start, the antitheft icon goes off after a few seconds with the key on and stays off while the truck is running. It never flashed either today or yesterday though. And I don’t know if the antitheft system disables cranking or starting or both.

What causes a car starter to not turn over?

However, when powered, it should send a signal to the starter relay once the key is turned or the starter button is pressed. If you press this button or if you turn the key on a manual ignition switch and the vehicle does not turn over, it may be caused by a problem with the starter relay.

However, today, when the truck will crank and start, the antitheft icon goes off after a few seconds with the key on and stays off while the truck is running. It never flashed either today or yesterday though. And I don’t know if the antitheft system disables cranking or starting or both.

Why does my Chevy Silverado want to turn over?

Truck wants to turn over but will act as if is starving for fuel,wait ten minutes, it start. Been happening frequently lately. I also was told it was the security system Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail.

What does it mean when your car won’t start?

An intermittent no-start condition references any time where starting is possible sometimes, and other times the engine will not start. This implies that the difference between starting and failure to start is not understood.

What is the OBD2 code for a Chevy?

OBDII Chevrolet Code Definitions. Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

What kind of problem does a 93-95 Chevy Van have?

Wiring open circuit/short circuit to ground, supply wire, transmission internal wiring, TCC solenoid, transmission mechanical fault, ECM

OBDII Chevrolet Code Definitions. Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

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.

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)

Where is the ASDL connector on a 1993 Chevy truck?

Locate the ASDL connector in your ’93 Chevy truck. It should be on the driver’s side, under the dash and near the steering column. It is made of plastic and has 12 pin-receiving slots. Bend a paper clip into a straight wire, then bend it into a tight “U” shape. Place both ends of the U-shaped paper clip into the ASDL.

What kind of engine does a Chevy truck 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.

Watch the “check engine” light. It will start flashing. Chevy trouble codes are two digits. The first digit will be represented by a long flash. Secondary digits will be relayed through quicker flashes. For example, trouble code 16 will be relayed with one long flash and six short ones. Write the codes down as the “check engine” light sends them.

Why is my truck engine slow to crank?

In the old days of engines with carburetors, sometimes the piston tops would get a coating of carbon. The carbon would retain heat and the fuel mixture in the cylinder would pre-ignite when the engine was hot.

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.

What kind of car won’t go over 30?

I have a chevy 1500 truck it goes into drive and over drive but when going down the road it only goes up to thirty then truck wont go after that until you come to a stop then take of againe it wont go over thirty what could couse that 79 people found this helpful. Maleik did you ever get that Volvo running?

Why does my Chevy Silverado not go over 25 mph?

If so then remove the 2 closest to the engine, they are almost touching the manifold. If that helps then there is a blockage in the exhaust. Most likely a bad catalytic converter or a bent pipe.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

What’s the fuel Gage on a 1993 Chevy truck?

Fuel gage never wavered at 12-13 psi. 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.

Is it bad to have a Chevy truck?

Yes, it’s really that bad. It is quite incredible that something you may think of as so dependable, can actually be riddled with an absolute minefield of failings. This is perhaps one the most major issues that quite a few Chevy pickup owners have faced.

Why is my Chevy transmission not working properly?

Here is a quick overview of Chevy transmission problems and possible causes. Chevy transmission slipping or no reverse – Reverse clutches may be worn out a fluid leak, or a broken sun shell. Won’t shift to higher gear until you let off the gas – Faulty throttle position sensor. A leak in the servo assembly or accumulator.

What’s the problem with my 1997 Chevy Silverado?

I have a 1997 chevy 1500 siverado with a 5.7 vortec that has been having a problem for about 6 months now. The truck starts, idles, and revs normally and when accellarating slowly everything works just fine, but once you get past half throttle it falls on its face and acts like it has a clogged fuel filter or bad fuel pump.

Is there a removable chip on a 1997 Chevy Silverado?

There is no removable chip on a ’97 PCM. The computer can be reflashed (reprogrammed) with updated software if you have the equipment. Generally, a reflash will not rectify a situation that arose so late in the truck’s life.

Locate the ASDL connector in your ’93 Chevy truck. It should be on the driver’s side, under the dash and near the steering column. It is made of plastic and has 12 pin-receiving slots. Bend a paper clip into a straight wire, then bend it into a tight “U” shape. Place both ends of the U-shaped paper clip into the ASDL.

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.

What’s the diagnostic code for an oxygen sensor?

43 – Knock Sensor Ciruit – Knock sensor signal was either above 3.5 volts or below 1.5 volts for at least 20 seconds. 44 – Oxygen sensor or circuit – lean exhaust detected. – Oxygen sensor voltage was under 0.25 volts for up to 4 1/2 minutes of closed loop operation.

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 is the code 45 on a GM oxygen sensor?

This is the description of a Code 45 as set on GM products It is an indication of a rich mixture as indicated by the oxygen sensor readings. Circuit description: The ECM supplies a voltage of about .45 volts between the appropriate terminals of the sensor.

How often should I run the EVAP monitor on my Chevy Silverado?

This ends the drive cycle. Performing the drive cycle on your Chevy Silverado at least twice will ensure all monitors run, including the EVAP monitor, and your Chevy Silverado is ready for the smog check. Should you want to perform specific Monitor self-tests follow the steps below.

What does high HC mean on a car emissions test?

A high HC reading means the test found high HC (hydrocarbons) in your emissions. In other words, too much gas is left in the exhaust after combustion. High HC can be caused by improper combustion, where:

How to reset Chevy Silverado 1500 emission monitors?

Do not brake or shift in order to slow down. It is important to let your Silverado coast along gradually slowing down to 20 mph. The ECU will once again self-test the EGR System, EVAP Purge System and Long Term Fuel Trims. F. Accelerate: Accelerate again at 3/4 throttle until 55-60 mph is reached.

Can a Chevy Silverado go more than 103kph?

No, it’s still doing the same thing. When I punch it at 110 or above, it will cut out and drop to 103kph, and will not go any faster then that until I stop, and shut it off for a minute, and then it will resume it’s normal expected job, unless I punch it again, and then it reoccurs. If I punch it on the way up, it will not go more then the 103.

If so then remove the 2 closest to the engine, they are almost touching the manifold. If that helps then there is a blockage in the exhaust. Most likely a bad catalytic converter or a bent pipe.

What kind of car won’t go over 25 mph?

My 1997 Buick Lesabre reaches 25 mph then looses pressure. It won’t go into reverse. Any suggestions? 4 people found this helpful. applying to the truck not going over 25, yes the fuel filter will do that such a thing John. It did it to my truck, i replaced it and it ran great after!

What are the GM trouble codes for 2008?

Here is what I have done since Aug. 2008 I have replaced the MAF sensor, air filter, knock sensor, fuel pump, coil, tps, fuel filter, distributor cap and rotor. But guess what I am still having the same codes in this order P0327,P0171, and P0174.

What kind of drive does a 1993 Chevy Silverado have?

Each configuration is available with rear- or four-wheel drive, designated by the letters “C” for rear-wheel drive and “K” for four-wheel drive. For example, the C1500 has rear-wheel drive model and the K1500 has four-wheel drive. The 1993 Silverado 1500 is a 1/2-ton model.

What does code 43 mean on a truck?

Code 43: My Truck Shows Code 43 but Had No Plug for the Electronic… My truck shows code 43 but had no plug for the electronic spark control or the control its self on my motor I do believe its code 43 I ran it earlier to day what do I need to do to fix this it just has a little bit of a rough idle. have the same problem?

Where can I buy 1993 Chevy truck parts?

Classic Industries is America’s first choice for 1993 Chevrolet Truck parts and accessories. Sorry—your search has returned more products than we can show at once. Please try one of the options below to help narrow your search results.

What kind of ignition system does a 1993 Chevy pick up have?

1992, 1993, 1994, 1995 Chevrolet/GMC 1500, 2500, and 3500 Pick Up and Suburban equipped with a 4.3L V6, or a 5.0L v8, or a 5.8L V8 engine. 1992, 1993, 1994, 1995 Chevrolet Astro (GMC Safari). NOTE: Testing the ignition system is a breeze.

What was the problem with my GMC pickup truck?

Specifically, the lawsuit claimed the active fuel management (AFM) system, piston rings and PVC system in these vehicles were faulty and caused excessive oil consumption, as well as premature spark plug degradation and engine malfunction.

How to troubleshoot the PCM in a Chevy truck?

If your PCM fails your Chevy truck can experience a wide range of problems. The only way to diagnose a faulty PCM is to use a special tool, called an on-board diagnostic scan tool, or “OBD” scan tool. These tools are available from most auto parts stores. Locate the OBD port in your Chevy truck.

What should I do if my Chevy Silverado starts acting up?

Contact GM if a relatively new Silverado starts acting up. It could be that there is a TSB (technical service bulletin) or recall that addresses the problem. If so, give your dealer the TSB number and expect to get your repair made for free. Since 2007, the newly designed Silverado shares the same platform with the Chevy Tahoe and GMC Yukon.

Fuel gage never wavered at 12-13 psi. 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.

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

I have a 1997 chevy 1500 siverado with a 5.7 vortec that has been having a problem for about 6 months now. The truck starts, idles, and revs normally and when accellarating slowly everything works just fine, but once you get past half throttle it falls on its face and acts like it has a clogged fuel filter or bad fuel pump.

What kind of engine does a GMC pickup have?

This engine was designed as a direct replacement for 1987-1995 Chevy & GMC pickups, SUV’s, and van applications. These vehicles featured a 350 ci, 5.7 small block Chevy with TBI (throttle body injected) EFI system and swirl port heads.

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.

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.

What does trouble code 43 on a GM car mean?

Trouble Code 43 indicates that there may be a malfunction in the Electronic Spark Control (ESC) circuit. ESC is used to sense spark knock (pinging) and GM Code 43 Electronic Spark Control Fault

What does code 43 mean on a GM engine?

Trouble Code 43 indicates that there may be a malfunction in the Electronic Spark Control (ESC)circuit. ESC is used to sense spark knock (pinging) and retard the timing to eliminate it. A knock sensor (located at the rear of the engine block) sends signals to an ESC module which then signals the ECM that knocking is being detected.

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 troubleshoot a Chevy 4.3 engine?

1 Common Problems. A common complaint with the Chevy 4.3 engine is that it doesn’t idle well, it’s loud and makes awkward noises. 2 Idle Air Control Valve and Throttle Conrtol Switch. Open up the hood and look at all the wires, spark plugs, tubes, vacuum lines and valves. 3 Check Your Oil. 4 Vehicle Fuilds. …

How to read FORD OBD diagnostic trouble codes?

No Heated Oxygen Sensor (HO2S) switching detected (front – HO2S) If using 12Vdc circuit test light, pay careful attention to length of pauses in order to read codes correctly. If using MIL/CHECK ENGINE light, service codes are displayed as flashes. Connections are displayed in image.

How to read Trouble Codes for 1993-95 Ford Probe?

How to Read Trouble Codes for 1993 – 1995 Ford Probe Here is a complete list of MECS-II engine trouble codes, taken from “How to Understand, Service and Modify Ford Fuel Injection & Electronic Ignition Control.” I offer this as a FAQ for those with 1993-95 Probes.

Where to find diagnostic connector in Ford EFI?

Locations: Left-hand side of firewall. (Ford EFI) Use This Connector > Photos of where to find connector in car Diagnostic Link Connector No. 10 Year range:1986 to 2000 Locations: Near the left hand strut tower. Near the right hand strut tower.

What causes a Ford Escort to not start?

Single switches or relays can fail internally causing a number of different symptoms including no start conditions (inoperative fuel pump or PCM), engine running warm due to inoperative cooling fan, or the AC might not blow cold air. The average cost for a Ford Escort General Diagnosis is between $88 -$111. Learn More

What are the relays in a Ford Escort?

The CCRM has relays and switches inside that control or provide power to the engine cooling fan, AC clutch (to engage the AC compressor), fuel pump and powertrain control module (PCM).

How to Read Trouble Codes for 1993 – 1995 Ford Probe Here is a complete list of MECS-II engine trouble codes, taken from “How to Understand, Service and Modify Ford Fuel Injection & Electronic Ignition Control.” I offer this as a FAQ for those with 1993-95 Probes.

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Ruth Doyle