1998 chrysler concorde LXI HEATER WORKS ONLY WHEN THE CAR IS MOVING WHAT CAUSE THIS PROBLEM

10

Asked by Jan 05, 2013 at 11:36 PM

Question type: Maintenance & Repair

WHEN THE CAR IS IDLE IT BLOWS ONLY COLD AIR , BUT WHEN IS MOVING THE HEATER WORKS JUST FINE

2 Answers

93,595

Check the coolant level. The water pump might be worn or the idle RPM's are too low.

105,825

If above checks out ok. Check for vacuum leaks going to the flaps of the heater air duck work. At an idle might not have enough vacuum to hold flaps open for heater to blow properly. But while driving you create more vacuum so the flaps can still work even if there is a small vacuum leak. Hope this helps

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