2000 Mercury Sable Q&A

2000 Mercury Sable Question: My heat only works when i am parked

My heat works when I warm my car up the engine gauge goes to warm but when i start driving the gauge goes down past cold and the blows cool air? -
Answer 1
Sounds like a possible engine thermostat opening too soon and staying open. Check there first. -
Comment 1
One thing I would check is the anti-freeze. If you have added any, it may test too low. In a lot of engines, too high ratio of anti-freeze to water will cause a heating problem. Testing at about 35 below zero is a good target. I hope this helps. -
Related Items:
The radio will work when car is in park but when you put it into gear the radio stops working and also the air and heat the blower on the same panel with the radio does not work