UGH! Car stolen now has no fuel pump power
02-21-2015, 01:01 PM
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UGH! Car stolen now has no fuel pump power
Was running fine until some scumbags stole it. Got it back minus steering wheel one plug wire and a smashed up steering column. Cops say they drive em til they're out of gas and it was bone dry.
No pump prime. Here's what I've tested. Reset ECM, battery voltage is over 12, Fuses are good. 12 volts to orange at relay. No pump activity when jumping orange to gray at relay. No pump activity when hot to ALDL G and ground to A. No pump activity when hot to tank side gray lead at c313 and ground to black. All this points to a bad pump right? or am I missing something. But here's where it gets confusing. Ohms test at c313 tank side leads gives a reading of zero ohms for pump and 25 ohms for sending unit. Wouldn't zero ohms for pump mean the pump is OK? Please tell me the pump is OK.
No pump prime. Here's what I've tested. Reset ECM, battery voltage is over 12, Fuses are good. 12 volts to orange at relay. No pump activity when jumping orange to gray at relay. No pump activity when hot to ALDL G and ground to A. No pump activity when hot to tank side gray lead at c313 and ground to black. All this points to a bad pump right? or am I missing something. But here's where it gets confusing. Ohms test at c313 tank side leads gives a reading of zero ohms for pump and 25 ohms for sending unit. Wouldn't zero ohms for pump mean the pump is OK? Please tell me the pump is OK.
Last edited by neilcase; 02-21-2015 at 01:04 PM.
02-23-2015, 09:29 PM
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Car: 1989 Camaro
Engine: Sbc 355
Transmission: TH350
Axle/Gears: 3.42 Detroit locker
Re: UGH! Car stolen now has no fuel pump power
Just a suggestion. If you can't hot wire the pump to get it to run, the pump might very well be bad.
02-23-2015, 11:41 PM
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Car: 86 Trans Am
Engine: 305 LB9
Transmission: 700r4
Re: UGH! Car stolen now has no fuel pump power
Probably running it dry was the last straw for your pump.. Who knows how many times the vandals tried to crank it with no gas
02-24-2015, 10:29 PM
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Car: 88 Chimera
Engine: 1994 LO5 5.7L
Transmission: 700R4
Axle/Gears: 2.73...?
Re: UGH! Car stolen now has no fuel pump power
Trying to start the car on an empty tank will just burn out the pump.
Crazy as it sounds the FP uses gasoline for lube and cooling!
No lube and cooling = dead.
Crazy as it sounds the FP uses gasoline for lube and cooling!
No lube and cooling = dead.
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