2009 Chevy Impala heats up when AC is on.

Asked by stefania Sep 25, 2023 at 10:21 PM about the 2009 Chevrolet Impala 1LT FWD

Question type: Maintenance & Repair

I have a 2009 Chevy Impala. Recently I got  P0128 code pop up and replaced
my thermostat and flushed my coolant. But now when I turn on my A/C the car
starts to heat up very quickly. No codes pop up. I don't have 'Engine Hot A/C
Off' showing.

3 Answers
310,565

Gene answered about a year ago

Check for blocked air flow through the radiator, dirt and bugs can restrict air flow. If it continues you may need to have the radiator flow tested.

Mark helpful
157,855

James answered about a year ago

When you flushed the cooling system did you make sure you got all the air out of the cooling system? Are the radiator cooling fans coming on? Most likely you have air trapped in the cooling system. Jim

Mark helpful
157,855

James answered about a year ago

One other thought, if the thermostat is installed upside down it will cause overheating as well. Jim

Mark helpful

Your Answer:

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