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2002 VW Passat 2.8 starts rough and stalls when started

When I start the car, you have to hit the gas to keep it running because it runs rough. When you hit the gas it sounds like misfires under the hood. I know I have a leaking valve cover gasket, but what is causing my car to misfire? My boyfriend thinks its the converter, but could it be the O2 sensors? Help!

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  • Shawnda Vermillion Dec 03, 2012

    Car was working fine just yesterday morning, so I don't see how the fuel pump would cause problems. Wouldn't it show some sign that it was going out?

  • larry warren Dec 05, 2012

    Not always. Some time the first time you know something is wrong is when the engine stops

  • Shawnda Vermillion Dec 05, 2012

    Hmmm.. Lets hope that is not the problem. A mechanic friend said to replace the coolant sensor, because I allowed it to get to low and sometimes that will make that sensor go bad and cease the car from starting.

  • larry warren Dec 06, 2012

    No that will not affect the starting or running unless other sensors come into play and check engine light comes on. oxygen sensors dont play up as much as some would like to think!

  • Shawnda Vermillion Dec 06, 2012

    It is not the oxygen sensor, it is the coolant sensor. Even the manual says that if the coolant gets to low this sensor will tell your car not to start so that you do not ruin the engine. My engine light has been on for some time, just have not had the money to get it fixed.



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  • 318 Answers

Could be lean mix of fuel. replace fuel filter . should check wiring and plugs

Posted on Dec 03, 2012


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SOURCE: Intermittent Misfire Code 0430 Catalyst Efficiency

catalytic converter clogged..

Posted on Feb 06, 2010

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SOURCE: can a bad intake gasket cause my car not to run or run rough

Yes. If it is leaking, the engine is not getting enough air intake. It's the same as disconnecting the PCV valve.

Posted on Apr 29, 2012

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