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

Bad fuel pump?

Old May 28, 2012 | 10:26 AM
  #1  
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From: Centreville, MD
Car: 1986 Firebird
Engine: 2.8
Transmission: 700R4
Axle/Gears: 3.42s
Bad fuel pump?

Turning the ignition on I do not hear the pump kick on. I tested for power on the tan wire with my multi meter, got nothing. I ran a hot wire directly from the battery to the "G" terminal on the ALDL, no pump. I then ran that hot wire directly to the tan wire at the bulkhead inside the car, no pump. Am I missing anything or is it time for a holley blue?

Here is a picture of the "tan" wire just to make sure I am sending juice to the right one.

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Old May 28, 2012 | 10:40 AM
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Bad fuel pump?

http://www.racetronix.biz/index.asp?...FromFeatured=1
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Old May 28, 2012 | 10:43 AM
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transamrob86's Avatar
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From: Centreville, MD
Car: 1986 Firebird
Engine: 2.8
Transmission: 700R4
Axle/Gears: 3.42s
Re: Bad fuel pump?


Very interesting. If it turns out mine is junk I will definitely look into that pump.


You have one on your car?
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Old May 28, 2012 | 11:04 AM
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Bad fuel pump?

Originally Posted by transamrob86
Very interesting. If it turns out mine is junk I will definitely look into that pump.


You have one on your car?
I have them in all my cars, some have 2 pumps

get your voltage/issues figured out 1st tho.

Last edited by TTOP350; May 28, 2012 at 12:19 PM.
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Old May 28, 2012 | 11:34 AM
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transamrob86's Avatar
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From: Centreville, MD
Car: 1986 Firebird
Engine: 2.8
Transmission: 700R4
Axle/Gears: 3.42s
Re: Bad fuel pump?

Originally Posted by TTOP350
I have them in all my cars, so me have 2 pumps

get your voltage/issues figured out 1st tho.

Thats the thing, I am trying to figure out if it is in fact my pump taking a crap or if it is something in the wiring.
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Old May 28, 2012 | 12:51 PM
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transamrob86's Avatar
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From: Centreville, MD
Car: 1986 Firebird
Engine: 2.8
Transmission: 700R4
Axle/Gears: 3.42s
Re: Bad fuel pump?

On top of the things mentioned above, I just checked the inline fuse on the inner fender and it was fine.

I am starting to think about the fuel pump relay, but I am not 100% sure I checked for power at the pump the right way. Looks like I can't get the pump to run off power from the car or by jumping power to it.
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