Overheating

2003 CHRYSLER 300
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DGIGGLES1
  • MEMBER
  • 23 POSTS
I have a Chrysler 300 3.2, when the blower motor for the heat is on it is fine, if I shut the heat off it is over heating, I have replaced the radiator cap and it is still acting up, still blowing heat, no loss of heat but yet the car will start to over heat. No signs of any head gasket problems.
Jan 16, 2012 at 11:06 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the thermostat-start here
Jan 16, 2012 at 11:46 AM
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MBARIZIA
  • MEMBER
  • 27 POSTS
If the thermostat is okay, check your coolant level an the waterpump
Jan 16, 2012 at 12:02 PM
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DGIGGLES1
  • MEMBER
  • 23 POSTS
it has good heat, just over heats when the blower motor is shut off.
Jan 17, 2012 at 7:14 AM
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MBARIZIA
  • MEMBER
  • 27 POSTS
Sign of failed coolant temp sensor
Jan 17, 2012 at 7:58 AM
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