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2003 Chevrolet Cavalier Question: Shut off the engine turning on the heater or AC.

 

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Banana Yellow, Dearborn, MI, June 05, 2012, 19:20
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Not all the time the engine will be turned off if I turn on the heater or Ac while the car runs. The Engine Thermostat was dianosed as opening too soon, a less than totally hot engine at best.

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    PARTS GUY June 05, 2012, 19:35
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     Master

    Your problem is??? Do you have a check engine light on? Is the car not running right?

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    Banana Yellow, June 06, 2012, 14:57
     Rookie

    I think it is running ok. It is a friends car and I am going to look at it more on saturday, thoughly test it check thermostat temp. and drive it. The car has a vapor emission test check engine light in the PCM.

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    PARTS GUY, June 06, 2012, 17:34
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     Master

    What do you mean by a "vapor emissions test check engine light". What are the troubles codes in the PCM.

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    Banana Yellow, June 08, 2012, 17:57
     Rookie

    Evap Codes, gas tank leak codes not engine fuel vapor codes. When have gas tank vapor codes shut off an engine.? Becides the engine shuts off I gather, when the HVAC system, the Heat or AC is turned on. If this is true when I test the car I figure it is a network system problem. There is one of three HVAC system controlers that has a Data Link Communications system, Class 2 Serial Data type.

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