why is my 2009 Pontiac Torrent overheating ?

Asked by Guru6QLQP Mar 26, 2020 at 07:33 PM about the 2009 Pontiac Torrent Base

Question type: General

I have a Pontiac Torrent 2009 it was blowing cold air at idle an overheating. i
put in a new thermostat. burped the system, put in new water pump, I now have
heat when i drive but still have no heat at a idle. car does not over heat when
I'm driving but continues to over heat at idle. I hope that someone may have the
solution to this problem.. Do you think it could be a CTS?

2 Answers

122,735

Sounds like you need a cooling system flush using a chemical cleaner. At idle the water pump is pumping at a lower volume because of the lower engine RPMs. This may not be enough pressure to push the coolant through cooling system passages that are clogged. When driving the engine is running at higher RPMs so the water pump is pumping at a higher volume and can force the coolant through the clogged passages. Hope that helps! Jim

15,115

Also check your cooling fan operation.

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