How to jump fuel pump on Pontiac Grand Am

1996 Pontiac Grand AM Fuel pump relay location and bypass procedure



The procedure to run the fuel pump directly to the battery is as follows:----




The purple wire going to the fuel tank is the power lead for the pump. See below the location of the fuel pump relay,
You have to power the pump up at the wires on the relay also. It should still be the purple wire that leads to the tank and the power side of the pump.

The relay is located on the top of the strut tower and it is the one marked number 1

See below the diagram of pump relay






TESTING RELAY:---
Just remove the relay and check for a 12 volt lead with the key on.
You will have to run a jumper wire from the battery (hot) terminal which is hot when you turn the key on, to the purple wire and it should complete the circuit for you.
If you have power into the purple wire to the fuel tank and a good ground at the black wire from the tank to the body ground and the pump does not work, suspect a bad pump. You may also find that the wires are pink or green with white, the ground is still black.

These will help.
Thanks.

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Fuel pump not running?

This problem is noticed on Ford expedition.
Its a 2000 year model ford.

In this case the fuel pump has no power and its not running.

On that basis the troubleshooting is as follows :-----

First check the fuel pump relay,then inertia switch and the fuel pump wiring.

The location diagram of fuel pump relay is as follows :-----




Try to jump fuel pump directly.

To do this try this :---

Test the pink wire at the plug where it connects pump.Now run 12 volt power in to pump side of that wire and see if the pump starts and runs.
If the pump runs then wiring is the issue and pump is ok.But if its not running then pump is issue.

Also try one more procedure for confirming the problem :----

Do a quick test, make sure the truck is back to normal, all connector and stuff plugged in. On the fuel rail on the engine you shoud see a small valve that looks like the valve on a tire. It may have a cap on it. Now  try starting the truck 4 times. When its done take a screw driver and push in on the valve. Keep your face away. If your pump is working then you should get a burst of fuel. If nothing comes out then something is wrong there and we can hunt it down.

If it works then inertia switch and relay needs to be checked to confirm the issue.
Try this test as follows :----

First thing we need to do is divide the circuit and see where we are losing power. The inertia switch is right in the middle of this circuit. So first thing i want you to do is disconnect the inertia switch and test for power on the green wire/with yellow tracer. Now when you turn the key on the pump relay is commanded on for only three seconds, so set your test up first, then turn truck on. You should see power for 3 seconds. It should be on continuously when you crank the engine.

This tests and troubleshooting possibilities will help you to confirm the problem.

so as per that you can go for replacing and repairing the particular parts.

This will help.
Thanks.

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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

Diagnostics is a term for what must be done to track down the causes of any problem in either system, the fuel pump or the evaporative (fuel vapors) emission control system.
The fuel pump relay is PART of the fuel pump control circuit, there are other parts like the computer control and the ignition switch
The electric vane rotary fuel pump is well a fuel pump, the control circuit (fuel pump relay, wiring and PCM) is what powers the pump on and off, like the switch that turns on a lamp, part of the same system but two different things. The fuel pump itself is located inside the fuel tank, the electrical control circuits are in various places like the fuse box and the wiring runs all over and then back to the fuel pump eventually. Evap code are generated in most cases by a fuel vapor leak, this is snesed by the computer via a small pressure sensor.

This details will help.

Thanks.

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