bad fuel pump?
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From: Chicago(DP)
Car: '90 RS
Engine: Vortec 350
Transmission: 700R4
Axle/Gears: 3.23 non posi
bad fuel pump?
Im running a mallory pro comp fuel pump. It ran fine for a few days but the other day the fuse blew on it. Replaced the fuse and it still wont run. I checked the voltage across the pump and the voltage drops to 9 volts when I turn the pump on. When I disconnect the hot wire to the pump and measure the voltage I get 12 volts. I rechecke dthe fus eand it was fine after this. Does this sound like a bad pump?? All fuel lines and filters are new and not clogged anywhere.
Thanks
Thanks
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Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
FROZERN PUMP
It should be under warrantee.
Swap it.
Happy Racing!
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Thread Starter
Supreme Member
iTrader: (11)
Joined: Aug 2005
Posts: 1,170
Likes: 0
From: Chicago(DP)
Car: '90 RS
Engine: Vortec 350
Transmission: 700R4
Axle/Gears: 3.23 non posi
Re: FROZERN PUMP
It an older one, I boguht it form another membe ron here a couple years ago. I just bought on on Summit todya and shipped it next day cause I need the car by saturday. I think the pump has been flaking out for awhile. I have the mallory 3 port return regulator and they say to adjust the fuel pressure to 5-7 psi with pump on but engine off. and I did that but when the engine is running the pressure would drop to 3-4 psi.
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