Coolant temp


Asked by GuruJWDJ May 10, 2019 at 10:55 AM about the 2001 Buick LeSabre Limited Sedan FWD

Question type: Maintenance & Repair

My coolant fans only works when I put ac on I
change the relays still doing the same thing can
someone tell me what else needs to be done I also
change temstat

3 Answers


Any applicable trouble codes relating to coolant temp sensor or cooling fans? Some makes and models if you unplug the coolant temp sensor, the fan will run all the time. It's a default setting because the computer doesn't know the engine temp, because sensor is unplugged. Will replacing that sensor fix your problem?


Ok I unplug the coolant sensor both fans did come on with it unplug.. So do I have to change the coolant sensor or just leave it unplug

1 people found this helpful.

A new Coolant temp was installed yet the two fans still won't turn on even at 216°F. Fans only come on. When the Coolant temp senor is unplugged. This is not the solution but shading more light.please contribute your idea to real solution. Thanks guys.

Your Answer:


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