MY CAR IDLE'S AT 1500 AND WON'T SLOW DOWN EVEN WHEN IT WARMS UP.

  • Tiny
  • zippy44
  • 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.

Sunday, April 22nd, 2012 AT 12:41 AM

2 Answers

  • Tiny
  • fixitmr
  • Member

Check IAC and look for vacuum leaks.

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Sunday, April 22nd, 2012 AT 1:38 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,251 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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