Delphi Fuel pump from Rock Auto a dud?
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Junior Member
Joined: Jun 2012
Posts: 34
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Delphi Fuel pump from Rock Auto a dud?
Hello Guys,
My buddy and I have painstakenly replaced the sending unit and fuel pump for my 87 iroc (Stock 5.7 TPI) We swapped the pump and it it constantly reads 38psi instead of 43psi but it is holding pressure. Should I get my refund back from this fuel pump? Did I purchased a bad Fuel pump?
My buddy and I have painstakenly replaced the sending unit and fuel pump for my 87 iroc (Stock 5.7 TPI) We swapped the pump and it it constantly reads 38psi instead of 43psi but it is holding pressure. Should I get my refund back from this fuel pump? Did I purchased a bad Fuel pump?
Member
Joined: Dec 2021
Posts: 224
Likes: 45
From: Southern Indiana
Car: 1988 Pontiac Trans Am GTA
Engine: 355 TPI w/AFR 195s Dyno Don Headers
Transmission: 700R4
Axle/Gears: Borg Warner 9 Bolt, 3.27 gears
Re: Delphi Fuel pump from Rock Auto a dud?
I installed a Delphi pump and it worked for about 8 months (about 5k miles) and failed on the Hot Rod Power Tour. We replaced it with a Walbro 255lph.
The Delphi pump does not seem to be a quality piece.
The Delphi pump does not seem to be a quality piece.
Joined: Sep 2005
Posts: 27,819
Likes: 2,406
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Delphi Fuel pump from Rock Auto a dud?
Sounds more like you didn't disconnect the vacuum from the fuel pressure regulator while measuring the pressure.
Member
Joined: Dec 2021
Posts: 224
Likes: 45
From: Southern Indiana
Car: 1988 Pontiac Trans Am GTA
Engine: 355 TPI w/AFR 195s Dyno Don Headers
Transmission: 700R4
Axle/Gears: Borg Warner 9 Bolt, 3.27 gears
Re: Delphi Fuel pump from Rock Auto a dud?
Yep that’s the one I am putting in this weekend.
Supreme Member
Joined: Oct 2000
Posts: 3,126
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From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
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