Question about 2006 Chevrolet HHR
This is an interesting subject.
When your engine reach high temp 100 C, your A?C not working, look in t the compressor pulley to see if the clutch engaged. If it is not then there is a temperature sensor from engine giving out the signal to stop to compressor and you may have not notice.
When you run in the freeway, the air flow increases thru your engine due to the direction of your car running help to cool down your engine, so your AC clutch keep engaged.
If your don't have a problem with the AC clutch, then check out Low and hig pressure from your refrigerant before charge some more.
But I also think that there in a nother posibility is that your divert valve controling the flap directing air through the heater core or evaporator before the air gets into your cabin based on your demand. When it doesn't work it just stays in the default position meaning it is directing air thru the heater core, this is why you are getting blown hot air.
Good luck in finding a root cause to the problem. Don't forget to post the message back so others can benefit ffrom the exchanging information.
Posted on Jul 08, 2009
You have lost some charge in your system. I would have a mechanic top off the charge but also add some refrigerant oil as well. The cool will often slow down at an idle, but should not start to blow warm.
Posted on Jul 03, 2009
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Posted on Jan 02, 2017
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