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

dizzy turns on fuel pump? relay

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Old Aug 2, 2014 | 11:46 AM
  #1  
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From: Charleston SC
Car: 1987 Trans Am GTA
Engine: 350 TPI
Transmission: T56
Axle/Gears: Posi 3:42
dizzy turns on fuel pump? relay

Ok....this just blew my mind!!!! Help asap!!!

So I tried it again and was gonna make an adjustment, advanced and car stalled. Iwas like yup....
So I turn dizzy back to about were it was and bang...I hear fuel relay pick....I'm like, huh....
Looked at key its still in on from stall, car not started so I can hear this for first time....
I turn dizzy, click off....turn dizzy click on

Whoa...just this one spot....why?! That ain't normal...right?

Ahy help on what to look for?
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Old Aug 2, 2014 | 12:19 PM
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TTOP350's Avatar
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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: dizzy turns on fuel pump? relay

Your ICM sends a signal to the fuel pump relay when the dizzy is turning.
Its normal.
You need a factory service manual from Helm INC.
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Old Aug 2, 2014 | 12:37 PM
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From: Charleston SC
Car: 1987 Trans Am GTA
Engine: 350 TPI
Transmission: T56
Axle/Gears: Posi 3:42
Re: dizzy turns on fuel pump? relay

So it is normal?
To go on and off by moving the dizzy!
Def showing my depth of tech knowledge and a Helms manual would be wonderful, but the 120$ and week to get one isn't going to help me today and just don't have it! I would be more prompted to drop 120 on a dizzy if I believed that was the issue.


I pulled all wiring on driver side and looks fine and what would be odd to me, would be the fact that during timing, you can't turn dizzy advance to much or it'll chop out n stall....going restarted just makes it richer and richer.

I really feel like its a catch 22 and if some one can scan that page of helms I'll be glad to buy it!
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Old Aug 2, 2014 | 01:01 PM
  #4  
TTOP350's Avatar
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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: dizzy turns on fuel pump? relay

Did you disconnect the tan/black timing wire?
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Old Aug 2, 2014 | 02:31 PM
  #5  
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From: Charleston SC
Car: 1987 Trans Am GTA
Engine: 350 TPI
Transmission: T56
Axle/Gears: Posi 3:42
Re: dizzy turns on fuel pump? relay

Originally Posted by TTOP350
Did you disconnect the tan/black timing wire?
Yes sir I did.
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