Question about 2003 Chevrolet TrailBlazer

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Engine wants to stall

When I turn my AC on the engine act like it wants to stop running, give gas it will run but engine get hot in fact I got a code P0128 (temperature sensor) reset and did not turn on AC and got no code engine did not get hot and the engine ran fine, what could be the cause of this, my AC unit?

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  • justin_r83 Jan 05, 2009

    i have the same problem with my 2003 Chevy trailblazer! i changed the thermostat and that's when it all started-the car ran and then if i touched the heater or the ac it would die and now it runs like it has a miss..... did cleaning the throttle body fix Ur problem and if so do u think it will fix mine?

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You need to Clean the throttle body bore and the throttle valve plate using a clean shop towel and some carb cleaner. The DTC P0128 is Engine Coolant below the minimum thermostat regulating temperature. You need to replace the thermostat, it comes as an outlet housing assembly. You will have to remove the alternator to gain access to this housing.

Posted on Nov 30, 2008

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