Question about 1997 Volkswagen Jetta

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When turning on the A/C sometimes a white smoke looking vapor comes out. It goes away after a while though.

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It's condensation. Moisture on the evaporator core. You may have a leak in your heater core or stopped drains in your ventilation system. To check for leak take to radiator shop have them pressure test system. To check for proper drain under car area below dash there are rubber hose outlets where the fresh air inlets drain any water, that comes into the cowl intake, dirt leaves etc. can stop up or restrict the drains and must be flushed. Easy way to tell run water into grill area under hood behind engine on cow area where you can see through and see wiper mechanics. This isn't smoke, smoke would stay, smell and take a while to go away and probably choke you. Hope this helps, please let me know. gl..dc

Posted on Jun 24, 2009

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