Question about 1998 Chevrolet Tahoe

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I have a 1998 GMC 1500 w/ the 5.7 vortec and have recently had issues with it not getting any spark. I had a mechanic replace plugs, wires, and distributor and it ran great for about three weeks and it just died again. It cranks over fine and the fuel pump is working but it just seems like there is no spark. I have put over 2000.00 into it and am stumped. The brain has even been replaced on it. Anybody have an answer?

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  • bmchevyguy Jul 28, 2008

    Problem solved, had only 30lbs. of fuel pressure, and was sold the wrong fuel pump when I replaced the last one.

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You must be sure that you have near 60 pounds of fuel pressure.
You could also have a bad connection in the wirring harness going to ECM (brain) There is no way to be sure without see the truck. These are things to cosider though.

Posted on Jul 28, 2008

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