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Idle speed will fluctuate 200 1983

posted by  mase on  Sun Jan 26 04:17 CST 2003
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last visit: Wed May 11 21:57 CST 2011
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This 83 Turbo is fluctuating when it comes to a stop. It doesn't happen when the car is first started but does when it's warm. I checked the Constant Idle Speed motor is I can feel the motor working. Is there as relay I'm unaware of? I'm not sure about the vacuum hoses other that the ones connected to the CIS Motor. I don't know which ones would affect the idle. Any helpwill be appreciated.








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    Idle speed will fluctuate 200 1983

    posted by  raidman on  Sun Jan 26 05:47 CST 2003
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    last visit: Fri Apr 4 22:17 CST 2014
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    This is a condition called "hunting for idle". Two things come to mind:
    1. vacuum leaks in the intake system. Check for those.
    2. wiring harness crumbling insulation. Check at the grey connector in front of the driver's side firewall.
    buena suerte,
    el Raidman








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      Idle speed will fluctuate 200 1983

      posted by  someone claiming to be Stephen on  Sun Jan 26 19:40 CST 2003 [RELATED]

      Good ideas from Raidman. I started checking for vacuum leaks and found these mechanics tricks seem to work. Pinch off each hose including the one that goes to the break power booster. Spray either water or WD 40 on the hoses after the pinch test. A change in rev's was found because of hardened hoses or my problem the inside bellows of the power boost. And yes the wiring harness. Don't be too rough. It's brittle and movment makes it worse.
      Stephen







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