fuel pump voltage drop
03-16-2013, 01:26 PM
#1
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Car: 89 Iroc
Engine: 383
Transmission: 700
Axle/Gears: 4.11
fuel pump voltage drop
While running some datalogs I noticed that my fuel pump would experience voltage loss for a little while then pick back up to whatever the motor is putting out. When the voltage drops happens the car starts idling wild and exhaust smell gets real rich. When it picks back up the voltage the idle levels out and its happy again. Any suggestions?
03-16-2013, 06:24 PM
#2
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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: fuel pump voltage drop
Could it have anything to do with belt slippage??
03-16-2013, 07:25 PM
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Car: klowny1969 <-youtube 4 3rd gen vids
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Re: fuel pump voltage drop
What is the voltage at the battery when this happens? / alternator?
03-17-2013, 07:08 AM
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Car: 89 Iroc
Engine: 383
Transmission: 700
Axle/Gears: 4.11
Re: fuel pump voltage drop
Thanks guys...ended up being the relay connection was NASTY. Cleaned out the gunk and it is holding steady. Appreciate you offering advice though.
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