Thermostat Problem?

tbirdman

Registered User
I'm trying to figure out if I have a problem with my thermostat. It seems like it takes longer now for the car to warm up. The temp needle doesn't move for about the first 10 minutes of driving. Then all of a sudden, it will move into the middle of the guage. It then goes back down towards cold, then back to the middle again. It does this for a few minutes, then seems to stabilize. I do notice, however, that when the needle drops back down towards thew cold end, the air coming out of the heater also gets cold.

Any help would be greatly appreciated. Thanks.
 
Have you purged the air out of the cooling system?
My old '86 Rustang didi the same thing until I was able to get the air out.
You also may have a sticking thermostat.
 
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