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    Type: Posts; User: Optiker

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    1. Replies
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      404

      What about the fuel pump? You didn't mention...

      What about the fuel pump? You didn't mention that. With the age of your car the second one could be wearing out now.
    2. Replies
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      267

      Not sure if it will help, but on that year New...

      Not sure if it will help, but on that year New Beetle 2.0 the brown/black wire would go to the heating element in the rear oxygen sensor.
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      218

      Has the drivebelt ever been replaced? It...

      Has the drivebelt ever been replaced? It certainly would be due by now. Maybe it is slipping on the pulleys because of wear.
    4. Replies
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      944

      It depends on the year. In 2016 they started...

      It depends on the year. In 2016 they started putting the 1.4 turbo engine in it.

      The non-turbo 2.0 is a completely different engine than the 2.0 turbo. If the Jetta S is pre-2016 there isn't much...
    5. I don't think there are clutches on the...

      I don't think there are clutches on the compressors any more. They are variable displacement and run all the time, just with no load if the A/C is off.
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      186

      I had a vibration like that once. It was caused...

      I had a vibration like that once. It was caused by the front tires being slightly out of round. As you drive the location of the high spots relative to one another changes with time so the vibration...
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      324

      With 0 compression the problem is likely to be in...

      With 0 compression the problem is likely to be in the valves or with adjacent cylinders, the head gasket where it seals between the cylinders. Head gaskets have not been a particular problem with...
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      389

      There is a metal contact piece that is attached...

      There is a metal contact piece that is attached to the knob that works loose and stops making contact. See this for how to repair it:

      https://www.youtube.com/watch?v=lCM-hmN8axU
    9. Mk IV's had a similar separate box in the intake...

      Mk IV's had a similar separate box in the intake system that had a wire mesh screen inside of it. The screen would get plugged up after 60k miles or so.
    10. I also noticed the mention of the snow screen in...

      I also noticed the mention of the snow screen in the service schedule and recently performed the service myself. What I found on my 2015 S (2.0 non-turbo, US market) was that there is a plastic box...
    11. Thread: Gas door

      by Optiker
      Replies
      3
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      177

      There is a fair amount of information about VW...

      There is a fair amount of information about VW gas door releases on YouTube. The most common problem is that the door won't unlock. There are several references to using spray lube to free it up. You...
    12. Thread: Gas door

      by Optiker
      Replies
      3
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      177

      The way the gas door latch is supposed to work...

      The way the gas door latch is supposed to work (at least on my 2015) is that when the doors are unlocked, pushing the gas door down once will open it, pushing it again will close it. If the doors are...
    13. Thread: Service Manual

      by Optiker
      Replies
      1
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      235

      For $35 you can have the factory service manual...

      For $35 you can have the factory service manual for whichever years and models you want. That is the cost of a 24 hour subscription at erwin.vw.com. It takes about an hour to download all the...
    14. Replies
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      159

      The crash response system is engaging while the...

      The crash response system is engaging while the car is parked. Someone else here had a similar problem, but no fix found yet:
      ...
    15. Replies
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      1,088

      The specs are 36 psi at idle with the regulator...

      The specs are 36 psi at idle with the regulator attached, 44 with the vacuum hose detached. The pressure should not drop below 29 psi for 10 minutes after shutting it off.

      There is also flow rate,...
    16. Replies
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      359

      The blue/red and white wires are the supply and...

      The blue/red and white wires are the supply and ground for the heating element in the O2 sensor. You could check the resistance on the sensor side for the same 2 wires and verify it is not open. The...
    17. Thread: Help

      by Optiker
      Replies
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      343

      Many of your codes are for "open or shorted...

      Many of your codes are for "open or shorted circuit" on a list of items that are exactly the things powered through fuse 43: both O2 sensors, the MAF, the EVAP system and the secondary air. I bet...
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      Was the second code P2234? I don't find anything...

      Was the second code P2234? I don't find anything about P2243. If it is P2234, that is a pretty specific code. There is a short in the wiring. Check for damage to the wiring harness around the forward...
    19. Thread: MK4 Rev Issue

      by Optiker
      Replies
      1
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      206

      First of all, what is the condition of the...

      First of all, what is the condition of the battery and charging system? You should have 12.4 volts minimum (or a little under that if the ambient temperature is near freezing) with the engine off and...
    20. Replies
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      I found some useful youtube videos for Mk.IV,...

      I found some useful youtube videos for Mk.IV, should be relevant for Mk.III as well:

      Diagnosing the coolant pump:

      https://www.youtube.com/watch?v=LiDRUWPw_f4

      Diagnosing obstruction in the...
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