Question about 1984 Toyota Celica Supra

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I can't get power to the fuelpump - 1984 Toyota Celica Supra

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Check the fuel pump relay.

Posted on Apr 24, 2010

Testimonial: "cant find fuelpump relay"

  • fixcar001 Apr 25, 2010

    under the hood at the fuse and relay box,check the EFI MAIN RELAY no.1.

  • sykster23 May 14, 2010

    i'm having the same problem w my 84 supra i called autozone and oreilly's autoparts

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TryTesting fuel pump relayfor B+ gong into it and leaving it to head for the pump., If B+ does into it but doesn't leave itthen this could be your culprit. HOWEVER, IF THERE IS NO B+ going to the relay then the problem is at the ignition switch or its circuit.

Posted on Apr 24, 2010

Testimonial: "lookin in the book i can't find the fuelpump relay but this is a great help can i get some more imput please"

  • JIMMY Apr 24, 2010

    Fuel pump relay is found in fuse box and is labled.

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1 Answer

Fuse #10 keeps popping on my 2002 lincoln navigator. already installed new fuel pump and relay. any suggestions would be appreciated!


Go to Google and enter "2002 Lincoln Navigator fuse10". You will be able to look up everything for the electrical system by selecting the individual pages and clicking them.

What you would want to do is look up all the wiring "paths" to read if a component part may be shorting this fuse. When the individual components are eliminated as problems, then it must be a shorting wire. The plug-in connector for the fuelpump should be clean now, as you just had the fuelpump replaced.

What I would look for as a problem are the other wires going into the Fuelpump Relay. Only 2 wires of the 4 prongs or so will make the pump work. Could be #27 and #34. Look on internet for "jumping the fuelpump relay" on Ford products.

It would help to know if the fuse breaks when the vehicle is off, or when it is running. Reason being that the mentioned fuelpump Relay has 2 or more extra terminals that connect to other devices and they could be tested.

Finally, most people think about a Relay connecting the Positive(hot) wire to transfer power. The fact is, the Negative(neutral) wire is also used to route power and connect the coils inside Relays. When you get a short on a Negative wire, it can falsely activate a Relay coil to connect something. This also means that shutting off the car will not necessarily shut off the power.

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2001 2500hd chev no power to fuel pump.


Sometimes the ground wire to the fuelpump goes bad. Depending on which wire it is, you can bypass, but be sure the fuelpump can cut off properly. I have seen people spend $300 plus on a new fuelpump they did not need.

Being a ground wire, many people started working on the power side of the problem first and overlooked the ground system.

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Have a 2000 gmc truck. It starts when you spray fluild in the injection but not sound from the fuel pump. And the truck was roll over, do i need to do a reset on it and if so how?


First check the fuse for the fuel pump, listed in the manual and also on the lid to the fuse box. Then check for power going to the pump, if there is power and no pumping, then the pump needs replaced. The pump is located in the fuel tank and you will have to drop the tank to get to it. The come out easy and replace easy, just getting the tank dropped is the bear. No resets that I am aware of and I been doing this for quite a while now.
It is possible that when it rolled over a wire got torn loose on the underside of the truck and this could be the problem.

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When i first tune the key on the fuel pump dose not engage. I checked the battery and charging system and both are good, but if i jump the car or hook up my battery charger on start mode the fuel pump...


Alot of times a bad fuelpump will run with the extra voltage not often but sometimes, i would check the power voltage and ground at the fuelpump, this is the only way to know for sure, if you get 12 volts and have a good ground at the fuelpump then i would say the pump is bad, check all wires going to the battery, make sure there are no loose wires or connections at battery terminals and try changing the fuelpump relay with another one and see if that helps, a bad relay can also cause this, good luck.

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Gmc yukon turns but will not start dont hear the fuel pump on in the fuel tank


With ignition key on run, use test light to verify you have positive & ground to fuelpump. No power (positive) check fuelpump fuse. No ground check fuelpump relay. If both positive & ground fuelpump needs to be replaced.

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Why wont my car start after replacing the fuel pump


Do you hear the fuelpump running? Check the Inertia switch under the right front passengers kickpanel. There is a button to press and it will reset.

This is a safety switch for impacts and when the fuelpump was disconnected, it can sometimes trip.

Also, when you diagnosed a bad fuelpump, there are Relays and fuses which supply the power. Your original problem could have been a bad relay.

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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.

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Fuel pump not getting power checked fuses and relay and fuel pump is relay board bad


Check in the trunk on the drivers side for an opening in the carpet. There can be 2 switches and 1 is for the Air ride and the other is a fuelpump safety switch. The safety switch is called an "Inertia switch" and it has a push button for Reset. Just hold the button down for 3 seconds and it will reset.

Then turn on the Ignition and you should hear the fuelpump run for a few seconds. It should be ready to start. If the Inertia switch was tripped it is made to kill the fuelpump upon impact. Slamming a door or the trucklid can make it kill the fuelpump.

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1 Answer

Power to fuelpump


If you find the relay you may not need to run a wire. make sure the relay is working.

Apr 24, 2010 | 1984 Toyota Celica Supra

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