fuel pump primes whenever?
Thread Starter
Junior Member
Joined: Sep 2009
Posts: 40
Likes: 0
From: SAN FRANCISCO
Car: 87 GTA
Engine: L98 5.7 24#inj,World hds,MSD,nosmog
Transmission: 700R4 truck clutches,Trans go shift
Axle/Gears: 10 bolt chevy 3.73 limited slip
fuel pump primes whenever?
The problem i'm having is it seems my fuel pump is priming without the key in.i have come out to hear the pump running for no reason and on multiple occasions my battery was drained.now mind you it does it at random and not on a set schedule.any help would be highly appreciated.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: fuel pump primes whenever?
Check the wiring at the FP relay.
The connectors used on the older cars commonly loose the insulation meaning you can have power direct to the pump full time if wires touch
The connectors used on the older cars commonly loose the insulation meaning you can have power direct to the pump full time if wires touch
Thread Starter
Junior Member
Joined: Sep 2009
Posts: 40
Likes: 0
From: SAN FRANCISCO
Car: 87 GTA
Engine: L98 5.7 24#inj,World hds,MSD,nosmog
Transmission: 700R4 truck clutches,Trans go shift
Axle/Gears: 10 bolt chevy 3.73 limited slip
Re: fuel pump primes whenever?
thanks will do
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: fuel pump primes whenever?
If relay checks out OK , check the oil pressure switch at the back of the block.
If that was to go bad , it also could supply power direct to the pump with the key off
If that was to go bad , it also could supply power direct to the pump with the key off
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