Question about 2004 Chrysler PT Cruiser

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My 2004 PT Cruiser 4 cylinder has 117K on it. When I come to a complete stop and wheels stop turning the car's rpm's dip so low that the car sounds like its about to clonk out. About 3 out of 5 times the car idles that low it stalls out completely. I just had the air intake sensors cleaned along with all new spark plugs put it. It seems to make no difference if the ac is on or not. When the car is in nuetral whe can only rev it to 4 rpm's. I am not sure if that is signifigant or not. What is causing the low dip in the rpm's? We just had it with the mechanic less than 3 weeks ago. The problem started last week and has gotten progressivly worse. Any thoughts?

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You said you just had the spark plugs replaced, could be that a spark plug wire was connected in the wrong spot, I would check that first, also does the car run smoothly going down the road? clogged fuel filter perhaps. Check engine light on? could alse be a sensor. This newer vehicles basically use a computer to control every aspect of the engine as far as keeping it running at top performance and the least amount of emmissions as possible.

Posted on Sep 03, 2010

  • angie542 Sep 03, 2010

    When running down the interstate it seems to do fine. I recently felt a what I thought to be a little hesitation in gears changing. I came from driving a 5 speed so driving an automatic takes some getting used to. No check engine light has come on yet. I have been advised to check the idle control clynoid and the clutch on the torque convertor.

  • Ismael Sep 03, 2010

    The Idle Control Valve is an electronic component, if it fails it should be registered by the computer and thus sends the check engine light on. I've never heard of a clutch for the torque converter, clutch will be only on manual transmissions, a torque converter basically is for automatic transmissions.

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