Fuel pump relay

You'll have to check to see if there is a bad connection at the computer or relay not letting it go on. It's a dark green wire with a white stripe. also check the ground wire, it connects to the trans stud.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

I'm saying that the relay coil is powered and comes on without a problem.

Problem is with the main feed coming into the relay.

Can you post a diagram? Thanks

Here is the diagram. Hope you have checked the fuse underhood, it's #35 if the pcm doesn't send a signal to the relay though it won't come on either.

Electrical problem
2002 Buick Century 6 cyl Front Wheel Drive Automatic

car will not start, can use jump wire on fuel pump relay and it will start and run, what would cause the relay not to operate the fuel pump

The relay being bad itself, bad fuse, also check wiring to pump and relay.

Car won't start, in fact died on the freeway. Towed it home and found I had spark. Disconnected the fuel lines at rail, tried to start car, no fuel came out either of the the lines. Fuel pump relay clicks so it is functioning. I took the fuel pump access plate off and the electrical connector at fuel pump only registers 5 volts when ignition or starter is on. Is this the correct voltage? If not what else in the circuit is dropping the voltage? Thanks.

Clicking relay does nt mean its supplying the power it means the trigger circuit is working. Here is a guide to help check the relay and the fuel pump relay location #19 in the diagrams below

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below). Please run this test and get back to us.

I am attaching an illustration of where this is located. Please reach out to us if you need more info. Thanks for visiting 2CarPros.

Where is the fuel relay located and which one is it

Under the hood, passenger side front, #3. Also, to be sure, compare wiring colors at relay connector.

I have looked for the relay compartment under my hood, on the passenger side up behind the head light, but I cannot seem to locate it. Please help!

Hello,

Here is a guide and the location of the fuel pump relay and fuse which is right next to the relay.:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers

My 94 Buick Century died. Has spark so and starts briefly when I spray Starting Fluid through the air intake. The voltage at the fuel pump is plus or minus 9 volts so I suspect the fuel pump relay may be faulty. On March 26th "bluelightnin6" posted a diagram showing the location of the AC Compressor Clutch Relay but the diagram isn't a large enough file to enlarge and read where the Fuel Pump relay is located. Can someone post a larger file or offer any suggestions on what I should be looking for besides the relay.

Use a gauge, check fuel pressure. Use a noid light to check for injector pulse. It shows an oil pressure switch in the fuel pump circuit. If the switch is functional and has voltage, once you crank it enough to bring up oil pressure, the switch closes. The pump will run, even with the relay unplugged. If multiple relays close to each other, look at the color of wires at the connector.

Where is fuel pump relay? Also reset switch?

"Inertia switches" are a Ford thing.

Engine Mechanical problem
1991 Buick Century 6 cyl Front Wheel Drive Automatic

WHERE IS IT LOCATED?

Welcome to the forum. The relay should be under the hood, passenger side front, relay pack. If your not sure which one it is, look at the wire colors at the connector. 3.3L engine

Where is my fuel pump relay located?

Hello, I'm Danny.

Here is the information you requested. It is located on the right hand front of the engine compartment. Here is a tutorial showing how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I've attached a picture below of its location on your vehicle. Hope this helps and thanks for using 2CarPros.