heater blows hot then cold then hot then cold

Asked by billyhaack5 Dec 22, 2012 at 03:05 PM about the 2005 Chrysler Pacifica FWD

Question type: Maintenance & Repair

4 Answers
176,125

tenspeed answered 11 years ago

Check the coolant level. It could also be a worm coolant pump that's not circulating water when at idle speed.

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455

spitzerone answered 11 years ago

I would also replace the thermostat. If it is sticking, it can cause the problem you are describing.

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GuruXXZX1 answered 5 years ago

If it was my thermostat wouldn't it be overheating because we drive it over an hour on a daily basis

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Chris answered 6 months ago

This happened to me yesterday. I called my brother-in-law who owns a shop, he gave me a list of things to check. The only thing that I could do while driving was check the level in the coolant reservoir, it was empty. I stopped and bought antifreeze and filled the reservoir with 50:50 antifreeze:water. I started driving and immediately the problem was fixed. Also the coolant temperature had large swings from 180-232 degrees.

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