How can I Fix my Chevy fuel pump?

Ask a Chevy Mechanic for Answers ASAP By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. My Chevy has no power to fuel pump. How can I fix it? no power to fuel pump… Submitted: 10 years ago. Category: Chevy

Why is the fuel pump and relay not working?

The ignition circuit, which includes the ignition switch, controls power to many components, including the fuel pump and relay. If there is an issue with the switch or the circuit, perhaps a wiring problem, then power to the fuel system may be cut off.

Where is the power wire on a Chevy fuel pump?

Want to make sure its a 5.7L engine with the classic style truck and not the new style truck with the 6.0L Right? On the fuel pump connector, the gray wire is the power wire. The thick black wire is the ground.

Is there no power to the fuel pump?

No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.

When did the Chevy fuel pump come out?

It started on Chevrolet truck models from 1996 to 2003 model years, but has expanded to other models as the connector and pump assemblies are not aging well. In fact, I have a financially strapped friend with an 04 Silverado that now caries a heavy rubber mallet in the truck.

No power to the fuel pump and the fuel relay is not getti… Q: No power to the fuel pump and the fuel relay is not getting power. My car has 190000 miles.

What should I do if there is no power in my fuel pump?

A test of the battery with a digital tester that provides current voltage, cold cranking amps, and state of health should be done first. The battery is the heart of the electrical system and if it stumbles or fails, it can affect all other systems.

How does a fuel pump relay get power?

The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump the computer actually connects one of the ground wires to complete the circuit and send power to the fuel pump.

Can a Chevy C / K 1500 run without fuel?

Also I haven’t fully checked the Spark, but the Truck run’s fine when you spray Starting fluid into the Throttle body. Any suggestions on why the truck isn’t accepting the fuel, it cranks fine, just wont run without starting fluid. these trucks have to have between 55-65psi of fuel to run.

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!!

How to test a GMC fuel pump relay?

TEST 1: Swapping Out The Fuel Pump Relay. TEST 2: Making Sure The Fuel Pump Relay Has Power. TEST 3: Bypassing The Fuel Pump Relay. TEST 4: Bench Testing The Fuel Pump Relay. Fuel Pump Circuit Diagram. Where To Buy The Fuel Pump Relay. More GM 4.3L, 5.0L, and 5.7L Tutorials.

How can I tell if my fuel pump has no power?

There should be 3 power terminals. The relay only runs for 2 seconds after you turn the key on. So you have just a little time to test it. That will tell if you have power going from the relay and then the issue is down stream from the relay. You can also check it at that connector. Was this answer helpful?

Why is the fuel pump relay not turning on?

The ECM controls the fuel pump relay and this relay will only energize when commanded on. Does the check engine light come on; if not, then the ECM is not turning on. Do all the other combination meter warning lights come on?

Why is there no power to the fuel pump?

Most of the time when this occurs it is due to petroleum contamination in the brake system. If something other than brake fluid was put into the master cylinder… I would certainly check the gearbox fluid level first – this is easy to do. If the fluid is very low, damage may have already been done to the gearbox, given your advanced mileage.

Where do I check for power to fuel pump?

If not all of them check for power at the ECM B fuse. And finally I am assuming you have the single tank and not dual.

How does the computer connect to the fuel pump?

To activate the fuel pump the computer actually connects one of the ground wires to complete the circuit and send power to the fuel pump. The wire coming from the fuel pump is the other ground wire. Electrical wiring issues can be a nightmare if you don’t have the appropriate wiring diagrams to see which wires go to where.

Why does my Chevy Spark Plug not start?

Chevrolets have a common issue with fuel filters getting clogged. You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start.

Where are the fuses in a Chevy Silverado?

Passenger Compartment Fuse Box № A Protected Component 1 – – 2 10 HVAC Components, Electronic Suspension C 3 15 Front Axle Actuator, Transfer Case Shift 4 10 Passlock Sensor, Transmission Control Mo

What makes up the relay for the fuel pump?

The engine module is what powers the relay for the pump. Check them with the key on. You can check fuses while they are in the fuse box. There are 2 metal tips on each fuse to touch with a test light or a volt meter. Check these and let me know.