Trailblazer ac overheat
When I turn on the ac on cold air it works
fine but after a while that the ac is on the
temperature gauge starts to go up only
until I turn off the ac it starts to go back to
normal
Start cheap, check your coolant level. There's a thermal switch on the compressor that will shut it off when it gets hot. Any check engine lights?
Coolant level is at normal and I have the check engine light on as well I check it once with a code reader and it told me a/c something
Update : I noticed that when my ac is at recycle or ice cold settings the temperature guage starts to go up but it doesn’t when just the air is on
Check your fan clutch connector. I had same symptoms after I replaced the fan clutch. Truck would run hot, 220, 230 with AC on. Ran just below 210 with AC off (normal temp). 2 of the 5 pins inside the connector had gotten pushed down flush when I plugged the connector back together and weren't making a connection. This apparently was causing communication issues with the PCM and the fan was only operating at one speed. Pushed pins back up and truck temp hangs at 210 at all times! Simple
