Help finding Fuel Pump Relay
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Joined: Feb 2011
Posts: 49
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From: Georgia
Car: 87 IROC Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt
Help finding Fuel Pump Relay
I originally thought I had a bad fuel pump but I put 12v to the G Terminal of the ALDL and heard the pump run. I recently changed out my brake booster and I believe I may have either caused a loose conection or possibly shorted out the FP Relay or the Fuel Pump/Oil Pressure switch sender. Any help finding and identifying these 2 parts would be greatly appreciated so I can get my car rolling again. Thanks in advance.
Thread Starter
Junior Member
iTrader: (1)
Joined: Feb 2011
Posts: 49
Likes: 0
From: Georgia
Car: 87 IROC Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt
Re: Help finding Fuel Pump Relay
I found it and replaced it. Looks like it is not the problem. Thanks
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: Help finding Fuel Pump Relay
Are you sure it was the fuel pump relay you replaced? Like said, there's 2 or 3 there, but "middle" one might not be it - after 20+ years anyone could have changed which was where.
Also, did you check the connector for the relay? Often the connector will be bad, not the actual relay. You should be able to remove connector from relay, and jumper the connector, tan/white wire to orange wire - should make pump run with key on.
Also, did you check the connector for the relay? Often the connector will be bad, not the actual relay. You should be able to remove connector from relay, and jumper the connector, tan/white wire to orange wire - should make pump run with key on.
Thread Starter
Junior Member
iTrader: (1)
Joined: Feb 2011
Posts: 49
Likes: 0
From: Georgia
Car: 87 IROC Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt
Re: Help finding Fuel Pump Relay
The car cranks but doesn't start. I just replaced the battery, brake booster, and the fuel pump relay. I have put 12v to the G Terminal and heard the fuel pump run. When I turn the key to the On position, I don't hear the Fuel Pump Prime.
The fuel pump relay connector did have a lot of grease in it. I cleaned it out before putting on the new relay. My next shot will be at the Fuel Pump/Oil Pressure Switch.
The fuel pump relay connector did have a lot of grease in it. I cleaned it out before putting on the new relay. My next shot will be at the Fuel Pump/Oil Pressure Switch.
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