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fuel pump by hdez
Started on: 03-29-2008 06:09 PM
Replies: 8
Last post by: hdez on 04-08-2008 10:24 AM
hdez
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Report this Post03-29-2008 06:09 PM Click Here to See the Profile for hdezClick Here to Email hdezSend a Private Message to hdezDirect Link to This Post
i just bought a 1986 and i called the old owner and he said the fuel pump just kept running and would blow the fuse i only paid 700 for it can any one help me!!!!!!!
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Xanth
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Report this Post03-29-2008 06:14 PM Click Here to See the Profile for XanthClick Here to visit Xanth's HomePageSend a Private Message to XanthDirect Link to This Post
Welcome to the forum!

Could possibly be the fuel pump relay is stuck. In the engine bay, by the left hinge for the decklid you should see two black relays mounted there.

Try swapping them and see if that makes a difference.

Other possibility is the oil pressure sender, it can cause the fuel pump to stay on. Do you have a 4cyl or V6?

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[This message has been edited by Xanth (edited 03-29-2008).]

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Dodgerunner
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Report this Post03-29-2008 06:23 PM Click Here to See the Profile for DodgerunnerClick Here to visit Dodgerunner's HomePageClick Here to Email DodgerunnerSend a Private Message to DodgerunnerDirect Link to This Post
Welcome to the forum!

Xanth covered the two items it could be. What bothers me is the owner saying it blows the fuse. Even if the relay or oil sender where bad it really should not blow the fuse. While your checking out the two items look for wires that could be rubbing and shorting out.

Hope someone didn't do any rewiring in the past.
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hdez
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Report this Post03-29-2008 06:48 PM Click Here to See the Profile for hdezClick Here to Email hdezSend a Private Message to hdezDirect Link to This Post
v6
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Xanth
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Report this Post03-29-2008 06:58 PM Click Here to See the Profile for XanthClick Here to visit Xanth's HomePageSend a Private Message to XanthDirect Link to This Post
Alrighty then,


See the metal tube that comes out from by the oil filter on the right, and goes to the silver canister with the plug on top? That's the oil pressure sender, hopefully its in the same spot on yours.

Get the fuel pump running, so its stuck on but with the car off. Try unplugging that sender and see if the pump shuts down. If it does, that sender is the problem.

If not, swap or replace the relays to see if they're the problem.

If neither resolve the situation, someone buggered up your wiring.

Edit: DodgeRunner's pic is much better, that should be what yours looks like.

[This message has been edited by Xanth (edited 03-29-2008).]

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Dodgerunner
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Report this Post03-29-2008 07:00 PM Click Here to See the Profile for DodgerunnerClick Here to visit Dodgerunner's HomePageClick Here to Email DodgerunnerSend a Private Message to DodgerunnerDirect Link to This Post
As a test you can unplug the oil sender or the fuel relay one at a time and see which one makes it stop running.



[This message has been edited by Dodgerunner (edited 03-29-2008).]

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Xanth
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Report this Post03-29-2008 07:01 PM Click Here to See the Profile for XanthClick Here to visit Xanth's HomePageSend a Private Message to XanthDirect Link to This Post
One thing to check if those don't fix the issue, remove this plate:


Underneath you will see this:


Make sure there are no wires jammed into the Fuel Pump terminal

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Doc John
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Report this Post03-29-2008 07:20 PM Click Here to See the Profile for Doc JohnSend a Private Message to Doc JohnDirect Link to This Post
This was an issue even when these cars were new - back in the day, Pontiac issued a service bulletin that describes the condition. The usual culprit was the oil pressure sender. Is you oil pressure gauge pegged?
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hdez
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Report this Post04-08-2008 10:24 AM Click Here to See the Profile for hdezClick Here to Email hdezSend a Private Message to hdezDirect Link to This Post
yes my oil pressure guage and fuel guage is peged
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