Fuel Pump Keeps Running - Killed New Battery
Thread Starter
Member
Joined: Dec 2010
Posts: 140
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From: Southern NJ
Car: '09 Pontiac G8 GT - 12.76@109
Engine: 436HP 6.0L
Transmission: 6L80E
Axle/Gears: 2.92
Fuel Pump Keeps Running - Killed New Battery
Went outside today to start the car and it was dead. WTH? It was just perfect on Sunday.
After jumping it and shutting it down, I noticed that the fuel pump just keeps running even when car is off and key is out. Didn't take me long to figure out that the pump running killed the battery.
So what would be causing this? Fuel Pump Relay? Oil Pressure Switch? Fuse to Battery?
Any help is appreciated.
After jumping it and shutting it down, I noticed that the fuel pump just keeps running even when car is off and key is out. Didn't take me long to figure out that the pump running killed the battery.
So what would be causing this? Fuel Pump Relay? Oil Pressure Switch? Fuse to Battery?
Any help is appreciated.
Joined: Oct 2001
Posts: 12,214
Likes: 1,140
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Fuel Pump Keeps Running - Killed New Battery
Tap on the relay or unplug it to see if its that stops the pump
If it stays running it could be the oil psi switch.
Pull the fuelpump/ ECM fuse if all else fails!
If it stays running it could be the oil psi switch.
Pull the fuelpump/ ECM fuse if all else fails!
Thread Starter
Member
Joined: Dec 2010
Posts: 140
Likes: 0
From: Southern NJ
Car: '09 Pontiac G8 GT - 12.76@109
Engine: 436HP 6.0L
Transmission: 6L80E
Axle/Gears: 2.92
Re: Fuel Pump Keeps Running - Killed New Battery
Nothing worse than reading a thread and never hearing back from the person as to what the final cure was. For me, I replaced the fuel pump relay and the oil pressure switch. The oil pressure switch was the culprit.
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Last edited by Speed Racer X; Jun 27, 2012 at 08:00 PM.
Junior Member
Joined: Jan 2012
Posts: 40
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From: GA
Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: 700R4
Re: Fuel Pump Keeps Running - Killed New Battery
I also like to hear feedback when an issue is resolved. Thanks for the update!
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