1999 Chrysler 300 Overheating and leaking coolant

Tiny
MORAVIAN2
  • MEMBER
  • 1999 CHRYSLER 300
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 84,350 MILES
My car is fine until I drive it about ten miles then it overheats and leaks coolant. What is causing this?
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Thursday, April 2nd, 2009 AT 6:27 PM

2 Replies

Tiny
2CEXPT
  • MEMBER
Get it block and pressure tested-When its leaking its gonna overheat you're losing coolant.
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Thursday, April 2nd, 2009 AT 6:42 PM
Tiny
EODANIEL
  • MEMBER
In mine someone replaced the radiator a while back and didn't conceal with wiring harness for the fans when they put everything back. Harness rubbed against a belt, exposed wiring, shorted. No fans means overheating if coolant gets too warm.

I read an article recently that had about a dozen things that can cause overheating. Some are simple, some are not.

Bad radiator cap - If not sealing, contents aren't under pressure and boiling point is lower than it should be.

Stuck Thermostat - If stuck closed, coolant is just circulating in the block and not making it to the radiator.

Fuses annd relays - Blow fuse to fan and you won't be cooling properly.

It would help to know what the weather is like for you when that happened (and I recognize this is an old post). If it is 32F out and you are overheating in 10 miles, that's not good. Low coolant/trapped air - something like that.
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Thursday, June 11th, 2009 AT 8:46 AM

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