no power 2 fuel pump
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Junior Member
Joined: Dec 2002
Posts: 74
Likes: 0
From: KENOSHA WISCONSIN
Car: 89 IROC-Z
Engine: 350 TPI
Transmission: 700R4
no power 2 fuel pump
i have no power to my fuel pump and my pump relay heats up real hot whithout the keys even being in the car?my car is an 89 350 tpi iroc-z. p.s. car wont start so i cant get trouble codes.
car doesn't have to start to get codes, actually it's not good thing to start car with jumper in the aldl. there are no codes associated with the fuel pump if that's where you were leading. check with a test light where you do have power that should confirm or eliminate the relay. have you checked the fuse
Thread Starter
Junior Member
Joined: Dec 2002
Posts: 74
Likes: 0
From: KENOSHA WISCONSIN
Car: 89 IROC-Z
Engine: 350 TPI
Transmission: 700R4
i know that but every time i have a qwestion everbody is always asking about codes.p.s. the only reason i say cant get codes because car wont start is because i cleared the ecm memory and no codes will appear untill the car runs for at least 30 seconds again.
Senior Member
Joined: Mar 2003
Posts: 512
Likes: 0
From: Birmingham, Alabama
Car: 1989 IROC
Engine: 5.7 / 350 cuid
Transmission: 700R4
The car doesn;t have to run for 30sec to get codes...at least not mine. I just had some huge problems with my FP system as well. were you getting any codes before you cleared them? Simply due to the heat build up, sounds like you have a ground problem of some sort.
You mentioned that you didn;t have any power to the FP..at what point in the circuit did you test the voltage?
One more thing, were there any symptoms that led up to this problem?
You mentioned that you didn;t have any power to the FP..at what point in the circuit did you test the voltage?
One more thing, were there any symptoms that led up to this problem?
Thread Starter
Junior Member
Joined: Dec 2002
Posts: 74
Likes: 0
From: KENOSHA WISCONSIN
Car: 89 IROC-Z
Engine: 350 TPI
Transmission: 700R4
well as far as synptoms i have a mass airflow sensor that is bad i think maybe wiring and my car was running really rich 2mpg and my system voltage will not go past 7 volts on my stock gauge could any of that be related? as far as codes all i was getting was for o2 maf and maf burnoff. im so confused
Thread Starter
Junior Member
Joined: Dec 2002
Posts: 74
Likes: 0
From: KENOSHA WISCONSIN
Car: 89 IROC-Z
Engine: 350 TPI
Transmission: 700R4
ok some stuff changed. i was testing the wrong sensor
stupid me but it still made no difference the sensor i was messing with was the maf power relay so that is the one heating up (maybe my maf sensor is good after all!) and when i jumper the fuel pump relay the maf power relay clicks. does this help you guys any?please help!
stupid me but it still made no difference the sensor i was messing with was the maf power relay so that is the one heating up (maybe my maf sensor is good after all!) and when i jumper the fuel pump relay the maf power relay clicks. does this help you guys any?please help! Thread
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