Engine idling so fast, brakes can barely hold.

Tiny
ANONYMOUS
  • 1997 CHEVROLET ASTRO
  • 20,800 MILES

Engine idling so fast, brakes can barely hold back. Replaced throttle positioning sensor. Ran ok bout 24 hrs. Now same problem but idling even faster. Replaced idle control valve still super fast. Control valve rubber end not moving in or out, just kinda vibrates. What next? Help.

Wednesday, December 26th, 2012 AT 9:05 PM

1 Reply

Tiny
SATURNTECH9
  • EXPERT
  • 30,276 POSTS

Have you looked for vacuum leaks yet?Also any codes in the computer?

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Wednesday, December 26th, 2012 AT 9:27 PM

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