2001 Chevrolet Blazer Logo
Posted on May 05, 2009
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Will crank up and will not idle, cuts off. had fuel pump replaced

All dash lights come while driving down highway and then go away. recently replaced the battery. not a reliable vehicle.

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  • Stephan Playford May 11, 2010

    check for a vacum leak in or around the inlet manifold

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1 Answer

Harvey N Tawatao

Harvey N Tawatao

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  • Chevrolet Master 3,854 Answers
  • Posted on May 05, 2009
Harvey N Tawatao
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There are to many things that can cause your blazer from idling.
Go to Auto Zone or Parts Source and they can scan your blazers computer. There should be a DTC code which should make you understand why your having the problem.
I believe they both scan for free and may have the parts you need to replace and give you the how to do it your self instruction for the repair:
 Good luck and hope this helps, here are some codes that control ther idle speed of your engine. It's the air idle control valve that may have gone bad or it just may be a dirty or stuck EGR valve. The scan should let you know.

P1505 Idle Air Control At Adaptive Clip

P1506 Idle Air Control System Over speed Error

P1507 Idle Air Control System Under speed Error

P1508 Idle Air Control (IAC) System - Low RPM

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