I've noticed that my car is taking a really long time to warm up. Even after driving for 15 or 20 minutes the heat is only lukewarm. Also my transmission is shifting really tough and banging into gear. A friend told me its all related to the thermostat. Could this be? This all started only recently when we got a cold snap. Its been in the single digits here for the last week or so. I know if the thermostat is stuck open the car will take a really long time to warm up, if it does at all. But can a bad thermostat cause the transmission to shift weirdly?? p.s. after the car finally warms up (at least somewhat ) I notice the shifting is much smoother. Can you give me any info?
Most cars have transmission lines that run to the radiator. In the summer, it cools the fluid, in the winter, it warms the fluid. If the thermostat is stuck open, then nothing will really warm up correctly. That could cause the problem you describe.
Bob, The Auto Answer Man
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