Question about 1989 Chevrolet C/K 2500

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I have a 1990 gmc truck 5.7 liter. This engine was rebuilt 10K ago. It was running fine smooth and trouble-free until I went to put an airaid throttle body spacer and airaid intake system to enhance power. I followed instructions precisely. When I went to start it up it wouldn't start. Went through and checked everything. Still won't start. Took off throttle body spacer and new intake system, put everything back to stock. Still won't start. How do I go about diagnosing this problem?

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Vacuum hoses????? I know on some of the cars I've worked on, when I left off a vacuum hose, it would run rough and do all kinds of wierd things. I'm sure you've done this, but after getting away from the problem for a while, so you can think more clearly, try redoing everything you did, visually, when you first started the project. Doublechecking all vacuum hoses, switches, etc. Use a flashlight if necessary. Good luck. These are one of those times when you want to pull your hair out.

Posted on Jun 29, 2009

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Check to make sure any wire plugs to throttle body are tight and the pins in plugs may not of pulled back from the plug itself.

Posted on Jun 29, 2009

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