How to Replace Coolant Temperature Sensor 1985-2002 Chevy Cavalier

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Hi, I'm Don from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.

In this video, we're going to replace the ECT or Engine Coolant Temperature sensor on this 2000 Cavalier with the four-cylinder motor, the same as a lot of GM vehicles with this four-cylinder engine. The only tool you'll need is a 3/4 inch, deep socket and a ratchet.

The ECT sensor is located right behind the alternator on the passenger side. There is just a little clip. Reach in and unplug the sensor. Now, you just need a 3/4 inch socket, a deep socket is best. Start removing the sensor. The sensor is a little bit below the top of the water. So, you're going to get just a little bit of water that comes out. You want to have a catch pan underneath. As you'll see, Don will be ready with the new sensor right next to it. As he pulls out the old sensor, some water comes out.

He puts the new sensor right in. You can see it's the correct sensor; it matches the original. You want to tighten the new sensor up to about 20 to 25 foot pounds, tight, but not too tight.

As you saw, we lost a little bit of fluid, so once you're done with the repair, drive the vehicle a little bit, check the coolant, and add as necessary. Once you've got it tightened up, plug it back in and you should be all set.

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