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My car idle's at 1500 and won't slow down even when it warms up.

Tiny
ZIPPY44
  • MEMBER
  • 1997 SATURN SC1
  • 142,000 MILES
The code is misfire 01, I have replaced the plugs and the wires. I clear the code and it will idle fast but seems to run rough, as I accelerate it runs fine at highway speeds and when I slow down the service light comes on. The car still gets around 40 mpg. It just won't idle down.
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Sunday, April 22nd, 2012 AT 12:41 AM

2 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Check IAC and look for vacuum leaks.
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Sunday, April 22nd, 2012 AT 1:38 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one check the hose that runs from the pcv to the intake. Its a short hose that runs from the intake manifold to the valve cover. See if its colasped or has holes in it very common on that car for a damaged leaking hose. Sounds like a vacuum leak though.
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Sunday, April 22nd, 2012 AT 3:29 AM

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