Question about Chrysler 300C

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My chrysler 300 5.7 engine runs hot when idling when i drive or press the gas paddle raising the rpm the temperature gauge reads normal.

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  • kenjiles Aug 07, 2010

    I have a chrysler 300 with a 5.7 engine. When my car is idling it runs hot when i press on the gas or drive it it runs in the normal range, what should i do?

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  • Master
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Most engines run warm when idling. If yours is getting very hot, then likely the fan is not coming on. If the fan isn't turning on, either the fan is bad, or the relay is shot, or the temp sensor needs to be changed.
You can test the fan relay with an ohmmeter. You can test power to the fan with a voltmeter. If there is power and the fan isn't on , it is faulty. If there is no power to the fan, then the relay or fuse may be bad or there sensor is bad and not sending a signal for it to turn on.

Posted on Aug 07, 2010

  • kenjiles Aug 07, 2010

    When the car is idling and the temperature rise above normal both fans turn on.

  • Nate Stansfield
    Nate Stansfield Aug 07, 2010

    If fans are working, than you need to change your coolant. Or have a coolant flush. A new thermostat would hurt either.

    Cars run cooler when in motion due to the cold air flowing through them.



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  • Chrysler Master
  • 6,927 Answers

Change the thermostat,and bleed the air out of the cooling system,check to make sure the cooling fan is coming on,when the temp gets above normal,and cuts off when it cools down,

Posted on Aug 07, 2010

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