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  1. #1

    Default 98 Tahoe wont start

    It has been a bit of an issue since I got it but but now its been a week and it wont start. I replaced the fuel filter a couple days ago. Today I checked the fuel pressure, when the pump is on it shoots to 60 but as soon as the fuel pump stops running the pressure drops fast. I pulled out one if the plugs and they aren't wet. There is obviously a problem with the fuel system somewhere but I'm at a loss at this point. Any suggestions?

  2. #2

    Default

    The pressure drops off after the pump shuts off. When you try starting the engine, the pump should start running and the pressure should come back up. Does it? There's a test lead (red, IIRC) coming off of power distribution that you can apply 12V power to and bypass the relay so the pump runs continuously. Does the pressure stay high and the engine run then?

    I might also put a scanner on it and see if there are any codes showing that would give any clues.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

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