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04-30-2012, 06:13 PM

84'B.A.T.A.

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Car: 88 Iroc-Z

Engine: 388 HSR

Transmission: 700r4

Axle/Gears: 9 Bolt 3.70

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Hi everyone, a few months back I bought an 88 iroc 350 tpi. I drove it home pulled the motor and trans out. Built a 388 stroker with 4L80E behind it. I cant get this thing to have any fuel pressure!!! I didnt think that I would have to have any sensors installed to test fire the system. It cranks over fine, has spark, ZERO fuel pressure.
I replaced the fuel pump relay... no change. Found blown main fuse near battery replaced... no change. started slowly installing sensors... no change...
What NEEDS to be hooked up/checked in order to get the fuel pump to prime. I drove this car to my house the fuel pump was just fine. I dont ever remember it priming when I first got the camaro either. HEEEELLLP! Please this is my first efi build, am very familiar with carbs, distributors and chevy motors. Thanks in advance!!

Last edited by 84'B.A.T.A.; 04-30-2012 at 09:16 PM.

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04-30-2012, 07:02 PM

91 1LE

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Car: '91 1LE

Engine: 377 w/Stealthram

Transmission: T56

Axle/Gears: 3.42 Torsen

Re: Need HELP cant get 388 HSR running!!

Look at your wiring harness by the heater box. There should be a single wire connector with nothing plugged into it. Apply 12v to this connector and the fuel pump should run. If it does, your problem is elsewhere. If it doesn't, you need a new pump.