Gray fuel pump wire?
Thread Starter
Senior Member
Joined: Mar 2003
Posts: 522
Likes: 0
From: Michigan
Car: '88 Red Trans Am w/ T-tops
Engine: 305 TPI
Transmission: T-5
Gray fuel pump wire?
trying to diagnose a bad fuel pump. I have 11v at the purple wire. but nothing at the gray wire. where does that wire get its voltage from? thanks
Supreme Member
iTrader: (8)
Joined: Aug 2003
Posts: 7,240
Likes: 6
From: LeRoy, NY
Car: 2003 Hyundai Tiburon GT
Engine: 2.7L V6
Transmission: 6-speed
Axle/Gears: 4.41
Re: Gray fuel pump wire?
If it's the wire I think it is, it gets power either from the fuel pump relay or the oil pressure switch.
Thread Starter
Senior Member
Joined: Mar 2003
Posts: 522
Likes: 0
From: Michigan
Car: '88 Red Trans Am w/ T-tops
Engine: 305 TPI
Transmission: T-5
Re: Gray fuel pump wire?
would that only have power when the key is first turned on and then nothing or should it always have power?
Supreme Member
iTrader: (8)
Joined: Aug 2003
Posts: 7,240
Likes: 6
From: LeRoy, NY
Car: 2003 Hyundai Tiburon GT
Engine: 2.7L V6
Transmission: 6-speed
Axle/Gears: 4.41
Re: Gray fuel pump wire?
Has power for 2 sec with the key turned on (unless the engine is running), and with the oil pressure switch closed... Otherwise, your fuel pump would always run.
Thread
Thread Starter
Forum
Replies
Last Post
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
