Question about 2001 Chrysler 300M

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Overheating sudden overheating

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Overheating, Try this procedure:

  • Dirt and debris can get lodged in the radiator air flow paths. This can block the radiator and cause your engine to overheat and damage the engine.

  • The thermostat can be stuck close. If you feel the upper hose very hot and the lower hose cooler than normal, it may be a stuck thermostat.

  • Make sure the radiator and the overflow bottle are filled to the proper levels.

  • Bleed air from the coolant system:This is best done by running the engine with the radiator cap off until you see when the air bubbles stop coming up.

  • Check the radiator fans: The easiest way is to turn on the cars air conditioner and turn up the A/C fans. Both radiator fans should come on when the A/C starts

  • Make a pressure test by using a pressure testing tool (available at most auto parts stores). Use the pressure shown on your radiator cap. Most cars are 16 PSI or less, so don't exceed that pressure. Replace the radiator cap if it doesn't hold the pressure.

Posted on Apr 28, 2015

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Be sure the radiator is full of coolant, Start the engine when cold, while engine is running feel the top radiator hose. As the engine warms up the upper radiator hose will suddenly get hot when the thermostat opens. If the upper hose stays cool, the thermostat may be stuck closed. If thermostat is stuck closed It must be replaced.

Without knowing more about your car, this is all I can recommend.

Posted on Apr 23, 2014

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