why would the coolant loose temp when driving but get warm when sitting

20

Asked by Nov 14, 2013 at 12:05 AM about the Plymouth Breeze

Question type: Maintenance & Repair

i have a 97 plymouth breeze that when driving the car the water temp goes down and when it just sits and idles it will warm up slowly

5 Answers

well there is Airflow through the radiator...coolin' off the show there~ when you are sitting there is not much airflow (unless equipped with electric fans will come on when the coolant temp gets to be 195)~ You may just want to change the thermostat to a 205 rather than the 195....will make the engine have to get HOTTER before the coolant loop opens up~

21,795

electric fans run only when temp reaches above 160 f ,makes airflow, when driving you have airflow, you have no stat in the engine or stuck open

20

I put a brand new fail safe in it already and it still does it. Also it tkes a while to warm up just idling to.

2 of 2 people found this helpful.
40

I've got a 1998 Breeze (currently at 122K Miles) and had similar issues. Always use dealer parts. I went through 3 thermostats before I tried a Chrysler one, and the Chrysler one was the ticket. Also, do a coolant flush at least once a year. When you get the flush done, also have the heater core flushed. It will make a difference. My car usually runs on the cool side during the winter months.

2 of 2 people found this helpful.

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