Question about 1999 Nissan Sentra

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Engine smokes with AC on

Haven't been using the AC this HOT summer as the engine smokes with AC on. It doesn't smoke when the regular car fan is on, just with AC.
Any suggestions?
Thanks 
Doug

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Due to the weakness of your A/C, the engine has to work harder, which causes it to heat more and causes the engine to smoke the fans try to dissipate all this heat.Your A/C is dirty already that can't work properly,due accumulated foreign matter,you better clean the A/C so it will operate normally...

hope this may help;

Posted on Jul 23, 2008

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Check if it is smoke or steam, if it is smoke do not start the car, if it is steam disconnect AC and go to a mechanic.

Posted on Jul 23, 2008

  • Ginko
    Ginko Jul 23, 2008

    If it is steam is not a big deal. Water is condensing on the outer surface of AC pipes and is being vapourized by the engine heat. In this case is normal and is nothing to worry about.
    If it is smoke , well that is a major problem, if it comes from AC is a short, if it is from engine it can be burnt oil, burning plastic or a short, in that case call in a mechanic.


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