My check engine light came on. the code says that temp is below thermostat level
2001 Buick LeSabre

My check engine light came on. the code says that temp is below thermostat level

(2001 Buick LeSabre)
should I replace the thermostat or is it a sensor ?
1 answer & 2 comments
Popular Answer
on July 09, 2011
Normally we would check to see what temp the thermostat is opening at it is more likly a thermostat that has failed and is stuck open or is opening to soon, with out proper test equipment to check the temp sensor for the PCM it is hard to tell if the sensor is having a problem.
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I think I'll change the thermostat since its a cheap fix and see if that helps. Any idea which temp thermostat I should get? I saw 3 or 4 different temp thermostats for my year car.
on July 10, 2011
You need to install the Factory Temp 192 Degree or the vehicle will never go into close loop if you use a cooler range thermostat
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on July 09, 2011
Normally we would check to see what temp the thermostat is opening at it is more likly a thermostat that has failed and is stuck open or is opening to soon, with out proper test equipment to check the temp sensor for the PCM it is hard to tell if the sensor is having a problem.
Sign in to reply
I think I'll change the thermostat since its a cheap fix and see if that helps. Any idea which temp thermostat I should get? I saw 3 or 4 different temp thermostats for my year car.
on July 10, 2011
You need to install the Factory Temp 192 Degree or the vehicle will never go into close loop if you use a cooler range thermostat

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