Question about 1994 Volkswagen Passat

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Check engine light comes on Car stutters when accelerate. Light goes off after a while and car runs great

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  • kenziecase Jul 19, 2010

    I have a 94 VW Passat the check engine light comes on when I first start the car the car stutters when i first step on the gas and smooths out after i reach speed i want only stutters when i accelerate. After 30 Min or 60 Miles the light goes off and it drive GREAT. I cant get it diagnost because its an 94 model unless i bring it to a VW dealer and they want $79 do diagnose it.

  • kenziecase Jul 19, 2010

    I was trying not to pay for Diagnostic i guess thats not possible

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When ever the check engine light comes on it is indicating a fault has occurred in the electronic engine control system, when this light is on a fault code is set, this is called an "OBD2" fault code, knowing what code was set in the memory of the engine control computer (called the PCM) is the very first step in finding which system in the engine is causing the problem, u can get the code(s) read for free by any Kragen or Autozone or Orileys auto parts store, there are over 200 possible codes so guessing isn't really an option and can lead to allot of money spent on guessing very fast and still no getting the problem repaired. I have 35 years experience in this type of work and there is no other way to do this, so get the tests run, u will most likely end up at the dealer because the fix often requires special testing and highly skilled techs with factory manuals

Posted on Jul 19, 2010

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  • kenziecase Jul 19, 2010

    The car is a 94 Passat and no can has a code reader for this older model i guess i have to spend $79 to a VW dealer to get the codes and find out what it is.

  • yadayada
    yadayada Jul 19, 2010

    sorry you are right this is the older OBD1 system, so the parts stores can't read the older system, u will need it read by a shop, but the advice is the same you need to know what that code is to start the process of diagnosis and repair, check ebay for a code reader, u can most likely find one cheap there, less than the cost of the dealer reading it, but then u will still need to have the skill to figure what is needed to clear the problem, the system is very complex, took me years to learn how to work on it and get my Master technican certifications

  • yadayada
    yadayada Jul 19, 2010

    Wow not even a chance to answer u. well please have a little patients in the future, there are no quick answers for these problems, unless u want to start guessing, let me know it is your money.

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Hi


Thanks for using FixYa. The check engine light is on because ECM (Control Module) detected a fault with your car's system. ECM has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" light to tell you that there is a problem and your car needs to be looked at. You'll need to get the codes checked from a nearby dealer/mechanic. Please do accept the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Jul 19, 2010

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