Coolant temperature sensor?

The sensor is telling you the engine temperature is too high. First you have to determine what affects the overheating. If speed is a contributing factor, and the overheating only occurs at low speeds, suspect the radiator fan is not turning on. That is not needed at higher speeds where natural air flow is sufficient.

Your car is too new for this, but if running the heater on "hot" and the fan on a higher speed brings the engine temperature down, corroded cooling fins on the radiator are a good suspect. A large butterfly collection in the radiator will do that too.

Another real good suspect is a leaking cylinder head gasket. The gases that get into the cooling system can pool under the thermostat and cause it to not open. Thermostats have to be hit with hot liquid. Hot air will not do it. A leaking head gasket is usually accompanied by the loss of coolant from the reservoir. There is a chemical test to check for this.

Here is the location of the engine temperature sensor and all the other sensors with a guide to help see whats going on if the sensor does not fix it.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Check out the diagrams (Below). Please let us know what happens. (ECT is the sensor you are looking for.)

There are two different places it can be depending on the engine which I have supplied both. Check out the images (Below). Please let us know if you need anything else to get the problem fixed.

The 2.5 is not a turbo, so here is a picture of the 2.0 turbo cht location. The 1.6L and 2.0L are turbo models.

Okay, no problem, here is the 1.6 location.

Hi,

Is coolant leaking past the threads? If so, there is no seal. Try using Teflon tape on the threads and then properly tighten.

Let me know if that helps.

Joe

Can you upload a pic of the part? I'm seeing one that threads into the engine in my manuals. How does this one attach?

Okay, I found it. It is the one held in with a clip. First, pull the connector off and see if it is wet inside. These commonly go bad an leak through the sensor into the connector and then out. Also, there is an o-ring on the sensor. If it isn't leaking through the sensor, remove the old one, make sure where it goes into the engine is clean, and lubricate the o-ring prior to install. I usually use something like vasoline. If you don't lubricate the o-ring, there is a good chance it will be kicked and leak.

Make sure the sensor is fully pushed in and that the clip is properly seated.

I attached a pic of the sensor and circled the o-ring that I mentioned. However, remember that the o-ring may not be the problem but instead, it is leaking through the sensor, into the electrical connector, and then out.

Let me know if this helps.

Joe

If it is leaking through the sensor, try a different brand. I haven't heard of any concerns like this, but this may become an issue. Have you spoken to them at the dealer where you got the parts? As far as it not being the sensor, that doesn't even make sense. If it is leaking coolant and it is coming from where you indicated, what else could it be. I'm not sure what he was thinking.

Let me know.

Joe

You might not have one and instead you have a cylinder head temperature sensor which does about the same thing. But you do have a ECT which is on right top of cylinder head. See picture.

If you could, let me know if a different sensor takes care of the issue. I'm really interested in knowing. Also, make sure the O-ring wasn't the issue because you mentioned you didn't think there was one.

Take care and have a good weekend.

Joe

Your vehicle only has one coolant temperature sensor so I doubt this is the reason for the overheat at this point. Here is a guide that will go over some of the common issues that cause an overheat:

https://www.2carpros.com/articles/symptoms-of-an-overheating-engine

https://www.2carpros.com/articles/engine-overheating-or-running-hot

When does this overheat? Only when it idles or do you have to be driving?

Let me know this info and we can go from there. Thanks