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    VWVortex


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    Thread: Yellow Paint on Idle Control Valve

    1. Member keganater's Avatar
      Join Date
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      95 Jetta 2.0, 92 Cabriolet 1.8, 05 CRF450R Supermoto,
      07-14-2014 12:38 PM #1
      I have noticed that the paint on the end of my idle control valve has broken away and now there is a hole where the paint was. What is the purpose of the yellow paint? Is it some type of sealant that should be replaced?

      Pic for reference:
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    2. Member Seax_Smith's Avatar
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      Newest, 92 GTi half-swap plus
      07-14-2014 04:08 PM #2
      If you poke around in there you should find a tiny little hex screw. DO NOT move it unless you have a spare ISV. The yellow stuff is/was an anti-tamper measure. That screw adjusts the valve in the ISV. NO YELLOW = NO WARRANTY (as if that matters today).

      [Want to watch a VW tech at the stealership cringe.... bring you car in and tell it is a mixture or fuel delivery issue and your pumps and relay test to be functioning correctly.]
      I'm currently out of my mind, but feel free to leave a message.

    3. Member keganater's Avatar
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      95 Jetta 2.0, 92 Cabriolet 1.8, 05 CRF450R Supermoto,
      08-22-2014 02:29 PM #3
      Thanks for the info. I figured that was what it was but wanted to confirm.
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    4. Member
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      Aug 15th, 2007
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      Virginia
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      G60 on CIS-E and a bunch of other VW's
      08-22-2014 04:43 PM #4
      Nice info to now know.
      I have a few spare ISV's. Maybe I will fiddle with one of them when I try and get my OBD-I VR T/B working with the lack of an idle air screw.

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