Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Fuel Pump Voltage Q's

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Old Jun 12, 2006 | 03:33 PM
  #1  
Bens3rdGen's Avatar
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Joined: Jun 2003
Posts: 340
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From: LA
Car: 91 Camaro RS
Engine: Holley MPFI, AFR 195, Hot Cam=375HP
Transmission: T-56
Fuel Pump Voltage Q's

When I start my car up it runs fine. As soon as it gets to full temp, it cuts out under light throttle. If I put my foot in it, it will run smooth for while but gets worse eventually.
I want to check the voltage going to the pump while the car is driving (under load). What connector could I splice into? Where is the pump grounded?
Could it be the FP relay?
When I changed the alternator the poroblem got a little better so I'm pretty sure it's voltage related. The fuel filter has less than 20K on it.
Any suggestions appreciated, thx.

Ben
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Old Jun 12, 2006 | 04:15 PM
  #2  
camaronewbie's Avatar
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Joined: Sep 2002
Posts: 9,192
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From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Have you tried replacing the ignition module in the distributor? Heat makes them worse when they are going bad.
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