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#1
03-25-2003, 10:30 AM
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Fuel pump keeps running.....Help!!!!
For some unknown reason my fuel pump keeps running while the battery is hooked up without a key in the ignition. It started this about 2 days ago. It only ran for about 15 min or so but would cycle on and off all day and all night long. I ended up having to disconnect the battery when it finally stopped turning its self off. I know it is (the pump) supposed to run for 2 seconds before you move the key to the start position, but after 2 seconds the relay opens the circuit (you can hear the click) but the pump continues to run. The voltage around 12-13 volts with a starter, alternator & battery that are all less than 6 months old.
The relay is good I've checked it. The pump continues to run with the relay removed. All of this with the key out of the ignition. Last edited by NATURAL1; 06-23-2009 at 09:33 AM. 
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#2
03-25-2003, 01:53 PM
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Disconnect the fuel pump/oil pressure switch and see if it still does it. If not thats your problem.
__________________
Shop Foreman Corvette Specialist A.S.E. Master Technician L1 Certified A.S.E. Master Machinist GM Certified Technician
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#3
03-01-2008, 08:36 AM
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Re: Fuel pump keeps running.....Help!!!!
sounds like the fuel pump relay in under hood fuse box, try finding another next to it thats the same , from the headlamp relay and swap them and see if it helps.
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#4
03-03-2008, 04:33 PM
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Re: Fuel pump keeps running.....Help!!!!
Quote:
It sounds like you have a short to voltage somewhere. It is probably in the fuse box, because there are no always-hot wires run to the back of the truck, and having two hot wires both worn through and not short to ground is pretty unlikely. Start by pulling all the fuses one at a time, you may get lucky and at least find out which circuits are bad, narrowing your search a bit. Older fuse boxes will get corroded inside and bare metal touches bare metal... a real PITA to fix.
__________________
'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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#6
03-05-2008, 03:46 PM
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Re: Fuel pump keeps running.....Help!!!!
Quote:
What engine/year truck is this?
__________________
'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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#7
03-05-2008, 05:51 PM
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Re: Fuel pump keeps running.....Help!!!!
Original post is almost 5 yrs old.
__________________
57 Chevy 210 65 Olds 442 Convertible (Another one sold) 75 GMC Vandura 3/4 Ton 1999 K2500 Old Body Style Suburban (Gone but not forgotten) 05 Dodge Ram 3500/5.9 Cummins 2012 Toyota FJ Cruiser
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