Question about 2007 Chrysler PT Cruiser Touring Hatchback

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Rpm drops while adling causing 'grinding' sound while white smoke flows from behind or below radiator.

While idling, the RPMs drop, a 'grinding' sound is heard from near radiator, then white smoke blows from behind or below radiator. I believe this may be related to the a/c unit, as the smoke has a light 'freon' smell, not 100% sure.

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  • changeiscert May 19, 2009

    The engine cooling fan does not appear to be coming on. I have also noticed that this only happens during warmer days- above 80 degrees F. During cooler days when the ac is running, this problem does not happen.

  • changeiscert May 20, 2009

    Thank you so much! I will replace the cooling fan and hopefully that does the trick! How difficult would you consider that repair for someone who has minimal mechanic skills? I work on the lawnmower and other small engines, but am out of my comfort zone when it comes to auto's.
    Again thank you thank you thank you!!!!


  • chryslerguy May 11, 2010

    Is the engine cooling fan coming on with the ac on?

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You should replace the cooling fan. With the ac on and no cooling fan, high pressure builds in the condensor and compressor bogging the engine down. When it gets too high a relief valve dumps and you get what appears to be white smoke. It's actually freon, hence the smell. I've replaced several PT cooling fans with the same symptoms.

Posted on May 19, 2009

  • chryslerguy May 20, 2009

    It can be done in your driveway but it is a tight fit and you may find yourself cursing a bit. If you remove the grill and upper radiator support, the radiator will have the ability to lean forward giving you a couple inches more room.

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