Question about 2003 Chrysler 300M

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2003 Chrysler 300m overheating

My chrysler is overheating... There is no fluid leak.. Fans are working and there is no other fluids mixed in my oil. It will go down if you put the heater on full blast. On idle it is not overheating

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  • exsmail Feb 13, 2009

    I have the same problem. The car only has 37,000 miles on it. There is really no reason for a headgasket to be cracked. The check engine light came on. I get a Thermostat Rationality code on my Scan Guage. The loop shows as closed, even as the temperature rises. I had the radiator cap replaced (one clever mechanics cure all for everything) and the thermostat replaced. It's still doing the same thing. I'm really curious because the problem started a year ago, then seemed to go away for a while. Now it's back. Any help appreciated in advance.

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Would recommend replacing thermostat first. could be sticking

Posted on Nov 16, 2008

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