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Old 12-03-2012, 07:44 PM
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DFEL750I DFEL750I is offline
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Location: Toronto
Join Date: Apr 2010
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Mein Auto: 750I
Originally Posted by Khabar View Post
Thank you guys. I know my thermostat opens after some time, i can feel tube becomes hot on the other side of thermostat. I always thought if u have faulty thermostat your car should overheat not running cold?
The thermostat in our car is designed to fail open...that means the car should run cold if the thermostat is bad....especially in cold weather. Besides checking the hose on the other side of the thermostat and easy way to check is open the coolant reservoir....turn on the heat in your car. From a cold start there should not be any coolant flowing to the reservoir especially with the heat on. After a few minutes if the thermostat is working right coolant should start to flow....if coolant flows right away as soon as you start the car then you have a thermostat that's stuck open.
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