2000 Volkswagen Passat 4Motion Logo
Posted on Feb 06, 2009
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White smoke coming from AC and under hoods smells of burning oil

I've got a 2000 Passat Wagon. It's a V6.

Occasionally a white smoke either comes through the AC vents or from under the hood. I've never been able to stop and see where it is coming from under the hood, but it only comes out of the sides or close to the windshield. There is never a lot of smoke and after driving for a few minutes the smoke and/or smell goes away. It smells like burning rubber or oil. Sometimes you can smell it but not see the smoke.

My wife thinks that it may only happen when we are running the AC. It certainly doesn't happen every time we drive.

In addition, I have a check engine light and a message that says "Emissions Workshop." I've checked online and it seems like the message could be anything or it could mean nothing. If I unhook the battery, the message goes away for about a week, then returns.

  • Anonymous Mar 30, 2009

    Mine is a 2000 VW Jetta GL. Not every time I run my AC, but randomly when I run it I see white smoke come out of the vents. I stop the car and turn off the AC and it stops. Nothing else happens. The air stays cold. Everything else seems normal. Still can't figure out why. I've called many auto shops and all have said they need to see it happen in order to diagnose, but it does not happen on command, so still a mystery.

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1 Answer

Marvin

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  • Volkswagen Master 85,242 Answers
  • Posted on Feb 06, 2009
Marvin
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U HAVE A HEATER CORE LEAK, DOES THE SMOKE SMELL SICKY SWEET? AS FAR AS THE CEL GOES HAVE THE SYSTEM TESTED FOR FREE BY ANY KRAGEN AUTO OR AUTOZONE, JUST ASK FOR A OBD 2 TROUBLE CODE TEST, THEN POST THE CODE BACK HERE FOR US TO LOOK AT AND TRY AND DEVELOPE A FIX STRATEGY.

2 Related Answers

Steven Wingert

  • 67 Answers
  • Posted on Feb 19, 2010

SOURCE: VW Passat B5; year 2000 with 1.8T engine.

It could be something as simple as a new gas cap..Have the car scanned and see what the code is...

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dnkypunch

  • 37 Answers
  • Posted on Jan 28, 2010

SOURCE: I own a 2001 VW Passat Wagon.3.0 liter, 6 cyl., 30

most autoparts stores will run the check engine light for you for free....I am assuming that you either have a clogged catalytic converter, or your o2 sensor is throwing a fault....have autozone check it out and post back.

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White smoke is coming out of my vents

White smoke is usually indicative of a blown head gasket. Usually if you have blue smoke it's oil......If you have white smoke and possibly a "sweet" smell to it, that's normally coolant.
If it's coming out of your vents then I'd say you need new gaskets now. What's happened is the gasket blew out so bad that the smoke made it's way through the vent system, it's also coming from under your hood I bet giving my past experience with this.
Definitely new head gaskets to fix this though.


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I have a 2000 passat b2b motion the emissions workshop light on,have been told it is the cam shaft censor. yesterday I started smelling a burning smell (can't tell wether it is an antifreeze or oil...

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Bradley,
You have stated two problems. Coming to second first. Smell of burning rubber. in the car rubber is only at two places where it can burn, The tyres, unlikely as you have not commented upon your driving habits. Some people like to rev the engine so much before take off that the tyres go burning for the first few hundred meters. And then there is rubber on the wires and cables. You have to check the wires for any heat while the engine is running.
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Smoke is coming out from under my hood...checked antifreeze and oil so it fine

white smoke usualy tells about a leakage in the cooling. check that. dont forgett to refill. get it repaired or DIY. attention: could be really hot.

if it smells like fuel, a fuel line is broken. then dont drive any more since it can catch fire.

if the smoke is not white, go to the repair shop instantly.
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