Where is the throttle body fuel pump located?

As you’re already aware, the throttle body fuel injection system on your 1987 to 1995 4.3L, 5.0L, or 5.7L pickup (or SUV) uses a low pressure (12 PSI) electric fuel pump located in the gas tank.

What happens when the fuel pump goes out on a Chevy Silverado?

There are physical signs that you can feel when your Silverado’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.

Where is the fuel pump on a GM Truck?

As you’re already aware, the throttle body fuel injection system on your 1987 to 1995 4.3L, 5.0L, or 5.7L pickup (or SUV) uses a low pressure (12 PSI) electric fuel pump located in the gas tank. And although GM did not include a Schrader valve to which you could connect a fuel pressure gauge, it can be tested with one to find out if the fuel …

Can a bad fuel pump start a GM Spider?

If you need to test the ‘spider’ equipped GM pickups or SUVs, the following tutorial will help: Troubleshooting The Fuel Pump (GM 4.3L, 5.0L, 5.7L). A bad fuel pump will make your 4.3L, 5.0L, or 5.7L throttle body fuel injected pickup or SUV crank but not start. Here are some more specific symptoms:

As you’re already aware, the throttle body fuel injection system on your 1987 to 1995 4.3L, 5.0L, or 5.7L pickup (or SUV) uses a low pressure (12 PSI) electric fuel pump located in the gas tank.

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.

How to order a Chevy S10 throttle body unit?

Order Chevy S10 Throttle Body Unit online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store. Free Ground Shipping on orders over $35* Free Ground Shipping on orders over $35* Sign In Sign InCreate AccountEarn RewardsTrack Order Find a Repair Shop CART Select Store Auto Parts

What kind of injector does a Sonoma 88 S10 use?

Compnine also lists the 92 sonoma with a fuel injector as a ACDelco #217-338. On the 88 s10 the fuel injector is a ACDelco #217-336. Thanks for the help. The Throttle bodies look the same, the injectors may have some internal difference, perhaps the 92 has higher fuel pressure, the 88 only has 9 to 13 lb fuel pressure.

What happens when the fuel pump goes out on a Chevy S10?

There are physical signs that you can feel when your S10’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.

What do you need to know about throttle body injection?

Our OEM Throttle Body Injection (TBI) Assemblies are complete and ready to install. Each TBI assembly is coated with a long lasting aluminum oxide finish. All TBI assemblies are flow bench tested, calibrated and idle adjusted which makes for easy installation.

Is the General Motors Rochester throttle body OEM?

The General Motors Rochester Throttle Body (TBI) is OEM original equipment. Each TBI comes complete with injectors, TPS, air control valve, and throttle body bushings. Every TBI will be Flow Bench tested, calibrated, and idle adjusted making it ready for easy installation. Each TBI has a complete one year warranty.

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.

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 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.

Do you need a tachometer for fuel injection?

Use of this section may require a digital voltmeter, test light, fuel pressure gauge, timing light, tachometer and/or a diagnostic scan tool. If you are familiar with vehicles and how they are serviced you should be able to work through this section with no issues.

What are the symptoms of low fuel pressure?

Low Fuel Pressure Symptoms & Causes 1 Unresponsive Throttle. All cars require proper fuel delivery to their cylinders in order… 2 Difficulty Starting the Car. Low fuel pressure will also make it hard for you to ignite your car’s… 3 Stalling Engine. If your car’s engine stalls while running, it is a clear sign you are having some…

What happens if the fuel pressure regulator fails?

The fuel pressure regulator controls the fuel pressure in the fuel rail. If there is something wrong with the fuel pressure regulator, it can create too low or too high fuel pressure in the rail. It is not very common that this part fails, but it can happen.

How does throttle body fuel injection system work?

TBI fuel injection is a type of fuel injection system where the fuel is injected into the throttle body. The throttle body fuel injection system, or TBI as referred to by GM or CFI by Ford, works using a single or pair of injectors.

What should the operating pressure be on an EFI throttle body?

When the injector(s) are signaled to open, the constant pressure is already there to be dispersed. System pumps vary. In general, the operating pressure for typical applications will likely run in the 30- to 90-psi range (some systems, again, depending on the application, may run as little as 19- to 24-lb. injectors).

Can a large injector affect throttle response?

If too large an injector is selected, you’ll waste fuel and hurt throttle response. Low-impedance injectors are available up to 160 lbs./hr., so don’t simply jump to a bigger injector because it sounds like a good idea.

Why is my GM fuel pump going bad?

In this tutorial I’m going to show you two different methods to verify if the no start condition on your 4.3L, 5.0L, or 5.7L throttle body fuel injection (TBI) GM vehicle is due to a lack of fuel, which usually means that the fuel pump has gone bad. One method involves using just starting fluid and the other involves using a fuel pressure gauge.

Why does my GMC Truck die at idle when warm?

So I wasn’t suspicious of fuel pressure, then later checked it and I have a steady 10psi from the moment I turn the key until a few seconds after it dies so the fuel pump is good. It runs strong and is fine until I idle. This happens only when the engine is warm and last time I checked it never went into closed loop.

What are the symptoms of a bad throttle position sensor?

A faulty throttle position sensor sends incorrect information to the ECM resulting in various issues in the engine, its performance, and fuel economy. Below are common symptoms of a faulty TPS. In most of the cases, all of these symptoms will show together making it easier to detect the faulty component. 1) Car Jerks

When did my 95 TBI Chevy stop running?

Timeline and service related incidents— Little over a year ago, it quit a couple times—I mean locked down like the key was switched off. My local indie tech replaced the distributor (O’Reilly’s).

What kind of fuel pump does a Chevy Silverado need?

It turned out the pump I put in was for a 96 C1500, which has a throttle body system and the pump only produced 20-30psi. The Fuel injection in the Silverado needs 55-65psi. Be very careful you didn’t put the wrong fuel pump in!!

What does 12 psi mean on GM fuel pump?

CASE 2: If the fuel pressure gauge registered 12 PSI. This fuel pressure gauge result lets you know that the fuel pump is working and delivering enough fuel to the fuel injectors. The reason your 4.3L, 5.0L, or 5.7L GM vehicle is not starting is due to another reason.

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 pump located in a 454 engine?

Evaporation emission control system. The injector fuel control systems have a electric fuel pump, located in the fuel tank on the gauge sending unit. It pumps fuel to the throttle body and the direct fuel injector system through the fuel supply line and then through an in-line fuel filter.

How to test the performance of a fuel pump?

Now start the engine so we can test the performance of the pump. While the engine is running, the fuel pressure should drop about 5 psi, from the static prime pressure (DPI) then snap the throttle, the fuel system pressure should jump up about 5 psi. this means the fuel pump and pressure regulator is working correctly.

What is minimum throttle position on Chevy 1500?

The minimum throttle valve position is set at the factory with a stop screw. This setting allows enough air flow by the closed throttle valve to cause the IAC valve pintle to be positioned a calibrated number of steps (counts) from the seat during controlled idle operation.

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 are the symptoms of a bad fuel pump?

Symptoms Of A Bad Fuel Pump. Where To Buy The Fuel Pump And Save. TEST 1: Using Starting Fluid. TEST 2: Fuel Pressure Test With Gauge. Which And Where To Buy A Fuel Pressure Gauge. More GM 4.3L, 5.0L, 5.7L Tutorials. You can find this tutorial in Spanish here: Cómo Verificar La Bomba de Combustible en Los Sistemas TBI (at: autotecnico-online.com ).

What can cause a bad throttle position sensor?

If you notice your fuel economy has dropped dramatically, it could be a result of an improper fuel and air mixture. Similarly, if your engine struggles to idle efficiently, it could also be a result of a damaged throttle position sensor.

Why does fuel gauge read wrong after fuel pump replaced?

Fuel gauge reads wrong after fuel pump replaced – YouTube If you have a 96 or 97 year gm truck that needs a fuel pump, be sure to order it by the VIN. There is an option for a anti-slosh module that could cause you If you have a 96 or 97 year gm truck that needs a fuel pump, be sure to order it by the VIN.

Can you test the fuel pump on a GM Truck?

And although GM did not include a Schrader valve to which you could connect a fuel pressure gauge, it can be tested with one to find out if the fuel pump is producing the correct pressure (or not).

What was the fuel line number in 1968 Firebird?

1968 Firebird Main Fuel Line Tank to Pump 2pc, 3/8″ Pass Side Routing, OE Steel PART NUMBER: FUE-2140

Where are the fuse panels on a Pontiac Firebird?

In this article, you will find fuse box diagrams of Pontiac Firebird 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 and 2002, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

How much does a Firebird fuel line cost?

Our Price: $7.95 Our Price: $18.00 Our Price: $79.95 Our Price: $4.95 Our Price: $25.00 1969 Fuel Pump to Carb Line 6 Cyl. OHC – OE Steel 1969 Pump to Carb 6 Cyl. OHC – Stainless Steel

When did the Pontiac Firebird 4 generation come out?

In this article, we consider the fourth-generation Pontiac Firebird, produced from 1992 to 2002.

What are the symptoms of a bad fuel pressure regulator?

The symptoms are very noticeable, too. You may notice a very rough idle, rough acceleration, slow acceleration, and vibrations from the engine. There are also many causes of engine misfires. It can be a problem in the spark plug or the ignition coil.

How does a fuel system pressure test work?

Before doing any fuel pressure testing, it is a good idea to understand how fuel system components work and how they relate to one another. The fuel pump pumps fuel from the fuel tank to the fuel pressure regulator and fuel injectors. The fuel pressure regulator divides fuel between the pressure line and the return line.

Can a throttle body fuel injector be inspected?

Photo courtesy of Albertas Agejevas on Flickr. Unlike injectors on throttle body fuel injection (TBI) systems, those used on an Electronic Fuel Injection (EFI) configuration don’t have their fuel spraying accessible for inspection.

How can I check the pressure of my fuel pump?

There are two ways to tap into the fuel line to see how much pressure the fuel pump in producing. 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.

Can you test fuel pressure on a GM TBI?

Safely tests vehicle fuel pressure systems on GM TBI vehicles not equipped with a Schrader or fuel access valve test port on the fuel line. Leaking injector (s). Actron products can also be purchased from our retail partners. Test fuel pump check valve, fuel rail pop-off pressure, fuel rail deterioration, and leaking injectors.

Where is the fuel pressure test port on a Chevy?

The CFI port is behind the intake plenum next to the distributor, and the CSFI/MFI port is about the left valve cover behind the positive crankcase ventilation valve tube. Connect the fuel pressure gauge to the fuel pressure test port. The system is pressurized, so cover the test port and pressure gauge line fitting with a shop rag.

Where is the throttle body fuel pump located?