Y MY CAR WILL NOT STAY STARTED WHEN I AM NOT ...

  • Tiny
  • joshamiah2013
  • 2000 Chrysler Cirrus
  • 135,000 miles

Y my car will not stay started when I am not pushing gas pedal

Sunday, February 10th, 2013 AT 5:10 PM

3 Answers

  • Tiny
  • caradiodoc
  • Expert
  • 24,907 posts

Was the battery recently disconnected? If it was, the Engine Computer has to relearn "minimum throttle" before it will know when it must be in control of idle speed. To meet the conditions for the relearn to take place, drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the pedals.

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Sunday, February 10th, 2013 AT 5:24 PM
  • Tiny
  • joshamiah2013
  • Member

No the battery has not been disconected it starts and runs, as long as im giving it gas but once I let go of pedal it shuts, off imediatley

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Sunday, February 10th, 2013 AT 5:54 PM
  • Tiny
  • caradiodoc
  • Expert
  • 24,907 posts

I'd still do the relearn procedure. If you do not get the idle flare-up at engine start-up, or especially if it is a little weak, the air passage around the throttle blade may be plugged with carbon. Really haven't seen that much in the last 15 years with better fuels.

The Engine Computer controls idle speed through the automatic idle speed motor on the side of the throttle body. It has four wires on it and if there's a break in any one of them, it will be detected by the computer and it will set a diagnostic fault code. Since that defect doesn't affect emissions, it may not turn on the Check Engine light. Cycle the ignition switch three times from "off" to "run" without cranking the engine, leave it in the "run" position, then read the codes as they are displayed in the odometer readout.

No code will be set for a mechanical problem such as a sticking AIS motor as long as it is good electrically. If there are no codes, you'll need a scanner to see if the AIS motor is working properly and to run a functional test on it.

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Sunday, February 10th, 2013 AT 6:10 PM

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