G-8VXWWTRHPN 2.0 FSI Fast idle on cold start - VWWatercooled Australia

Announcement

Collapse

Welcome to the new look VWWatercooled

After much work and little sleep there is a new version of the forums running on more powerful and recent hardware as well as an upgraded software platform.

Things are mostly the same, but some things are a little different. We will be learning together, so please post questions (and answers if you've worked things out) in the help thread.

New Forum Server and Software - VWWatercooled Australia
https://www.vwwatercooled.com/forum/first-stop/forum-rules-how-to-post/2037513-new-forum-server-and-software
The new forum software is an upgraded version of what came before, it's mostly the same but also a little different. Hopefully easier to use and more stable than before. We are learning together here, so please be patient. If you have questions, please post them here. If you have worked something out and can provide an answer,
See more
See less

2.0 FSI Fast idle on cold start

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
  • #1

    2.0 FSI Fast idle on cold start

    Hi All,

    I have a MK5 2.0 FSI which i now need to fit in a very narrow drive with some technical reversing needed around some posts.

    The car has a fast idle on cold start which lasts for about 2.5-3 mins where it sits at 1500, the throttle works well and it doesn't hunt - just idles really fast.

    The problem is that it's almost out of control in reverse at 1500rpm and the other half has already had a couple of close calls with the posts.

    The car exhibits no other symptoms after the cold start, and never hunts or idles rough.

    My first thought is the MAF isn't warming up quickly enough or there is a faulty temp sensor somewhere...

    Any thoughts on what to replace first? no codes have been logged...

    Edit:
    Thanks JC, mine is a non-turbo DSG as well...
    Last edited by mattchuu; 05-12-2016, 03:47 PM.
    Tags: cold, fast, idles, posts, start
  • #2
    Same on my wifes car the 110kw non turbo 2.0 fsi with auto box.
    Lots of brakes when reversing out to keep it sane. My 2.0t does not do this.

    Sorry i have no advice but keen to hear what others think.

    Sent from my LG-D802T using Tapatalk
    MK4 GTI - Sold
    MK5 Jetta Turbo - Sold
    MK5 Jetta 2.Slow - Until it dies.

    Comment

    • #3
      Check the PCV pipes on the front of the motor. Hard to see as the main one is buried behind the intake manifold, but they do snap off, causing some weird running problems.

      Also pop the intake pipe off the throttle body and check that the T/B isn't gummed-up or sticking open.
      '07 Transporter 1.9 TDI
      '01 Beetle 2.0

      Comment

      • #4
        My 2.0 FSI only runs fast for about 45-60 seconds before the idle drops to near-normal (well below 1,000rpm), so it's certainly not an issue that affects them all equally. I always leave it in park until the idle drops to avoid any difficulties reversing.
        2008 MkV Volkswagen Golf R32 DSG
        2005 MkV Volkswagen Golf 2.0 FSI Auto
        Sold: 2015 8V Audi S3 Sedan Manual
        Sold: 2010 MkVI Volkswagen Golf GTI DSG

        Comment

        • #5
          Originally posted by AdamD View Post
          My 2.0 FSI only runs fast for about 45-60 seconds before the idle drops to near-normal (well below 1,000rpm)
          Mine does exactly the same
          2016 GTI 40 Years | 2012 Up! | 2006 Jetta - Sold

          Comment

          Previous template Next

          2025 - Below Forum

          Collapse

          Test Slow

          Collapse
          Working...
          X