no power to fuel pump relay sometimes
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Junior Member
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Joined: Nov 2000
Posts: 99
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From: Virginia Beach, VA
Transmission: 700R4
Axle/Gears: 2.73
no power to fuel pump relay sometimes
i have a 92 TPI 5.0
intermittently the car will loose power form the 12 volt line going to the fuel pump relay
the car will cut off, when i try to restart the fuel pump wont prime and it just turns and wont fire
but sometimes after 5 to 15 mins or so it will be fine and run normal from just sitting and doing nothing
Ive noticed it has done this twice when i started the car for the first time in the morning but it has left me on the road a couple times in the middle of the day as well
any thoughts?
intermittently the car will loose power form the 12 volt line going to the fuel pump relay
the car will cut off, when i try to restart the fuel pump wont prime and it just turns and wont fire
but sometimes after 5 to 15 mins or so it will be fine and run normal from just sitting and doing nothing
Ive noticed it has done this twice when i started the car for the first time in the morning but it has left me on the road a couple times in the middle of the day as well
any thoughts?
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Pump Slump
the car will loose power form the 12 volt line going to the fuel pump relay
Inspect the pump fuse near the battery, the wire that runs from the fuse to the relay for a PO splice, and the connection of the wire to pin A.
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8 Wheels Corner Better Than 4, If You’re On The Outside You Have Fair Warning
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Thread Starter
Junior Member
iTrader: (2)
Joined: Nov 2000
Posts: 99
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From: Virginia Beach, VA
Transmission: 700R4
Axle/Gears: 2.73
Re: Pump Slump
the orange wire of the relay goes to a huge bundle of wires in a wiring harness that heads back to the back of the engine near the firewall
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Pump Slump
At least one of those wires makes it’s way to the pump fuse unless it was modified by the PO.
It goes from the relay, along the firewall, heads to the right, then heads to the fuse by the battery.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
8 Wheels Corner Better Than 4, If You’re On The Outside You Have Fair Warning
.
It goes from the relay, along the firewall, heads to the right, then heads to the fuse by the battery.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
8 Wheels Corner Better Than 4, If You’re On The Outside You Have Fair Warning
.
Thread Starter
Junior Member
iTrader: (2)
Joined: Nov 2000
Posts: 99
Likes: 0
From: Virginia Beach, VA
Transmission: 700R4
Axle/Gears: 2.73
Re: no power to fuel pump relay sometimes
turns out it was a bad weather pack connector near the battery
removed it and has worked great since
removed it and has worked great since
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iTrader: (1)
Joined: Feb 2000
Posts: 7,964
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Thread Starter
Junior Member
iTrader: (2)
Joined: Nov 2000
Posts: 99
Likes: 0
From: Virginia Beach, VA
Transmission: 700R4
Axle/Gears: 2.73
Re: no power to fuel pump relay sometimes
some fool kept touching it 
jk
for those following this while the car was running Zepher jiggled some of the connections and that weatherpack connector would make the car shut off when messed with
jk
for those following this while the car was running Zepher jiggled some of the connections and that weatherpack connector would make the car shut off when messed with
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