Question about Pontiac Bonneville

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Hi my 1995 pontiac bonn. fuelpump stops working with no power on it.all fuses and relays are good.at least the ones i could find? let it sit for an hour or two and it starts up and runs until the nexttime .can you help?

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The ignition module could be the problem. it is located at the top of the engine and has three nuts located under the mounting bracket. you can have it tested at o'rielly or auto zone. hope this helps.

Posted on Apr 23, 2010

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1989 Cougar, XR7, Supercharged-- I have zero fuel pressure. Is it most likely a relay, a fuse, or the fuel pump?


This sounds like the Inertia switch is tripped. This switch is either in the trunk or behind one of the kick panels. This is a resettable switch that cuts power to the fuelpump in a collision. Often a bump of the correct frequency will trip this.

You also have a fuelpump relay in one of the Powerboxes. The sequence is such that power goes to the relay and the wire from the relay goes rearward to the inertia sensor in the trunk(Or kickpanels) which acts like a breaker and then the power goes to the pump.

Mar 19, 2014 | 1989 Mercury Cougar

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I do not get any electric power on the feul pump, i have tried to activate the emergency shut off valve but still no power. i have taken electrical messurment at the switch but there was no power either.


Hello, You should have a fuelpump Relay in the Powerbox under the hood. The power goes through this Relay, then it has a fuse in the fusebox inside the car, and the Inertia sensor is next and then the fuelpump. If you have no power going to the Inertia switch, then you may have a bad fuse or a bad Relay.

Check with Autozone, Oreillys, or Advance autoparts for the correct Relay. Ford uses the same part for several jobs and you need to replace the bad Relay. Sometimes you can just switch identical Relays to find the bad one. Autozone is pretty good for having diagrams. A bad fuse would mean something went bad either on the Relay side or the fuelpump side of the fuse.

May 03, 2011 | Ford Focus Cars & Trucks

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I have no power getting to the fuel pump on a 1995 E150 5.0L V8..all fuses and relays are good...


Have you checked the voltage to the fuelpump ? is it verified voltage ? Have you determined whether or not the fuelpump died ?

Apr 03, 2011 | Ford E-150 Cars & Trucks

1 Answer

We replaced a bad fuel pump on 06 escaped limited. There is no power to fuel pump. we have checked all fuses, relays and reset switch. Where else could the problem be?


Hello, You might try a Relay that controls the PCM or ECU. They would be in the Powerbox where the fuelpump Relay is. Some of the Relays are identical so you could buy 1 and it would be a backup part for several.

You should also look at the other things the Ignition switch turns on in the Run position. Does the radio work, the fan motor, or turn signals? If they do not work look at replacing your Ignition switch.

The PCM and ECU get their power indirectly from the Ignition switch. When all have power they will connect to the fuelpump Relay. Since you said you checked the Relays, I am taking that to mean you checked the fuelpump Relay only. Many times people do not know that there are several relays which all need to connect to get the fuelpump to run. When you determine the Ignition switch is good, then the ECU and PCM relays should be getting power. Have you tested the fuelpressure Regulator? It needs to demand fuel from the pump.

The fuelpump relay depends on the ECU or PCM relays to work. One of the 2 relays may be bad and preventing the fuelpump relay from working. When you get to trouble shooting the terminals you can get wiring diagrams online or the info may be in a book at the Autoparts store.

One of the benefits of using a Dealer with the hardest problems is the tools they have. They have machines with connectors that match every wiring connector inside your car. If one section is unplugged they can test the wire loom section by section until the problem is found.

I hope you have found my solution to be very helpful and that I have brought up a few new areas to try. If trying different parts does not help, you are left with a wire by wire battle to fix this and the Dealers' better tools may make more sense.

Apr 03, 2011 | 2006 Ford Escape

1 Answer

Suspect fuelpump but want to check relay first wich one and where location is ? When I took air cleaner apart and shot brake clean it would start but would die, just quit when sitting idling ?


the fuel pump relay is in underhood fuse box on drivers side. it is a micro relay, # 18, there should be a fuse locater on underside of fuse box top. have a good one !!

Feb 21, 2011 | 2001 Chevrolet Malibu

2 Answers

Location of fuel pump relay 97 bonne se 3.8l


under hood, look for relay & fuse center box. it has a black plastic cover. u need to unlock tabs to open it then look under cover for fuse and relay diagram location.

Jan 15, 2011 | 1997 Pontiac Bonneville

2 Answers

I have replaced the fuel pump amongst a lot of other things. I can spray gas or starting fluid in the throtal body and it will run rough untill the fumes ware out. Its a 1995 ford explorer 4x4 xlt


If you hear the fuelpump operate the first 1 or 2 seconds when the key is turned to RUN position, the fuelpump is working. If you do not hear the fuelpump run, check the Inertia switch which should be in the side panel of the rear cargo area. If you have an owners manual check for the Inertia switch location.

To reset the Inertia switch, hold the button on it for 2-3 seconds. You should now hear the pump run. You may also have a fuelpump relay under the hood in one of the Powerboxes. The Powerbox may have a fusible link from the Battery. When the fusible link is OK and the Pump Relay is OK, there is a fuse in the Fuse panel. Then finally the Ignition switch will trip the Pump relay. As power flows through the wire to the fuelpump the Inertia switch can break the power connection.

So you have 5 powerpoints before the fuelpump will work. Fusible link, Pump Relay, Fuse Panel, Ignition Switch,and Inertia switch. These must all work before the fuelpump can run.

Aug 14, 2010 | 1995 Ford Explorer

3 Answers

No power to fuel pump on 1989 jeep cherokee what is the proper sequence to follow checking electrical?


there is a fuelpump relay in the engine compartment
along with three or four other relays find the one that says fuelpump and replace it (chysler - dodge - jeep - plymouth all use the same relay and thy all blow out the cost is about 15.00 dollars at autozone
of you don' t get the pump to come on check the pigtail back by the tank if still no power the pump
replace the ignition switch for that turns on the relay under the hood

Feb 26, 2010 | 1989 Jeep Cherokee

1 Answer

I have a 1995 izuzu trooper.it won't start on its own it will start with starting fluid.i have replaced fuelpump.ecm.fuelpump won't come on with key.it comes on when i put a hot wire to the fuse.i also...


TRY REPLACING THE FUEL PUMP RELAY. THIS SHOULD SEND POWER TO THE PUMP. IF NOT, THEN CHECK THE WIRING HARNESS NEAR THE FUEL TANK. I HOPE THIS HELPS. P.S.: IF I REMEMBER CORRECTLY, THE PCM IS RESPONSIBLE FOR THE FUEL PUMP OPERATION. THANKS FOR USING FIX-YA. PLEASE KEEP ME POSTED. GOOD LUCK

Sep 02, 2009 | 1995 Isuzu Trooper

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