Thread: ECT Sensor
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Old 08-16-2008, 11:25 PM   #2
58mm of Bliss
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Join Date: Jul 2003
Location: PEI,Canada
Posts: 4,369
My Ride: 330i, 330Ci
Originally Posted by chay2263 View Post
Anyone know where the Engine Coolant Tempature Sensor is? How hard is it to change?
There are 2 coolant sensors; one is mounted to the bottom passenger side corner of the radiator, one is mounted at the back of the cylinder head just under the intake manifold.

If you need to change the coolant temp sensor on the head, you'll need to take the intake manifold off to get access to it.

I highly recommend you purchase a Bentley manual for your vehicle.
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