Fuel issue....maybe?
10-24-10, 07:40 PM
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Fuel issue....maybe?
Ok, driving my car a few weeks ago and it shuts off out of nowhere.
Check my gauges ect, everything's on and in spec
Pull over, start the car, car fires up and I'm off...
About a week later I go out, start the car, and let it warm up
After a few minutes it shuts off
Crank it..nothing...crank...nothing..crank...runs for 30 seconds and shuts off
My car has the fuel pump rewire so I start there.
Turn my key on and I can hear the opening circut relay on the column click and the 30a rewired relay click, but no pump prime.
Mess around with a few things, turn the key on, hear the pump prime, start the car...runs for 10 seconds and shuts off
Replace the 30a rewire relay for s/n/g's...Crank the car...fires up....take it out, get it up to operating temp, take it home and park it...great
Next day I go out, start it up...runs for a couple minutes and shuts off
Then I'm back to crank...nothing...crank...nothing...crank...ect
I check the new relay..its fine...check the opening relay...its fine...check the pump..seems fine, but its an intermittent problem so I say F-it and change the thing...solves nothing
The car is running on an Apexi PFC BTW...sensor check shows 4.98v for the "fuel" sensor with the key on and while its cranking
Is there something else inline that I'm missing?
A resistor or something?
Any other ideas?
Its weird that both relays click every time but the pump won't prime or run while its cranking...2 good pumps w/the same results (1 nine month old Walbro, 1 brand new Walbro), both confirmed to work via my jump box while out of the car
Check my gauges ect, everything's on and in spec
Pull over, start the car, car fires up and I'm off...
About a week later I go out, start the car, and let it warm up
After a few minutes it shuts off
Crank it..nothing...crank...nothing..crank...runs for 30 seconds and shuts off
My car has the fuel pump rewire so I start there.
Turn my key on and I can hear the opening circut relay on the column click and the 30a rewired relay click, but no pump prime.
Mess around with a few things, turn the key on, hear the pump prime, start the car...runs for 10 seconds and shuts off
Replace the 30a rewire relay for s/n/g's...Crank the car...fires up....take it out, get it up to operating temp, take it home and park it...great
Next day I go out, start it up...runs for a couple minutes and shuts off
Then I'm back to crank...nothing...crank...nothing...crank...ect
I check the new relay..its fine...check the opening relay...its fine...check the pump..seems fine, but its an intermittent problem so I say F-it and change the thing...solves nothing
The car is running on an Apexi PFC BTW...sensor check shows 4.98v for the "fuel" sensor with the key on and while its cranking
Is there something else inline that I'm missing?
A resistor or something?
Any other ideas?
Its weird that both relays click every time but the pump won't prime or run while its cranking...2 good pumps w/the same results (1 nine month old Walbro, 1 brand new Walbro), both confirmed to work via my jump box while out of the car
10-25-10, 05:51 PM
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fixed it
corroded wire at the rear fuel pump harness connector...the one inside the car behind the rear plastic, not the one directly on the pump (for future people searching)
corroded wire at the rear fuel pump harness connector...the one inside the car behind the rear plastic, not the one directly on the pump (for future people searching)
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rgordon1979
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