Voltage at fuel pump question
Thread Starter
Heel & Toe
Joined: Jul 2005
Posts: 16
Likes: 0
Voltage at fuel pump question
I have an 82 crossfire that I just replaced the 82 fuel pump with an 85 fuel pump, the old one gave up the ghost and I figured since it needing changing I would do the upgrade. Anyway, teh 85 fuel pump ran for one day and died so I replaced it, (it was free from local chevy dealer) but its still not getting any fuel to the engine and I ran a voltage test and got a reading of 7.5 volts going into the fuel pump. This seems low to me but I have not been able to find anywhere where it says what the voltage should be or even why it would be low if it is. Guys need ypur help on this one not sure whats going on back there but something sure isn't right.
Thread Starter
Heel & Toe
Joined: Jul 2005
Posts: 16
Likes: 0
No sir nothing on the pump or the box and can't find anything in my hanes manual, don't laff at me, its all I got lol, on the voltage either, I would thing 12 or more myself but I don't even know if there is a relay or anything else can't find anything on it
Safety Car
Joined: Feb 2002
Posts: 4,286
Likes: 4
From: Guam
Apparently, you have a ground problem. I worked on an 82 with the exact same thing. It ended up burning three pumps before I was asked to work on it. Once, the ground was fixed, everything worked fine.
Drifting
Joined: Nov 2001
Posts: 1,469
Likes: 6
From: 68 427 4.11s Roadster
It could be either of the wires. Corrosion broken inner wires or loose connections.
I doubt they would make anything less than 12 volts for a motor. The lower the volts, higher the amps. Its always best to run higher voltage and lower amps.
I doubt they would make anything less than 12 volts for a motor. The lower the volts, higher the amps. Its always best to run higher voltage and lower amps.
