Is it the CTS or the smaller one that is linked to the temp gauge?, CTS right? I was parked last night for a couple hours and I had my engine running and then I noticed my temp gauge was rising. Coolant level was normal and thermostat was open so I think the fans just turned off. The fans are linked to a sensor and if that sensor is bad the fans may not come on, correct?

 

Yes, correct, cts, it is the two-pin sensor on the coolant log, the ecu middle mans the whole ordeal though, and there are relays & fuses involved as well (not saying you don't know this, we both know you do, just for the sake of saying it). So check that the fans come on when the air-conditioning clutch is engaged.

 

Thanks, ya, the fans come on when I turn on the AC, that was my first test last night.