high idle-faulty throttle body

[silverdovegti]

gpk: when i initially told them about the problem at my last service they reset and cleaned the throttle body, but since then the problem recurred (after being ok for about 3 months) so they replaced the faulty TB this time round.

[Golf Loon]

I have a couple of mates at the main dealer and apparrently VW usually change em under warranty, but often if cleaned they are still operational.
I`d definately try that first as they are dear.

[mikinoz]

thanks silverdovegti!!!! we will be stickying this thread!!! did they say the TB was reset or changed??

Added to FAQ and DIY!

[h100vw]

Is the snowflake not a warning of possible icing conditions. Used to get one on my Passat in the UK for that reason. I bet it would mention it in the car handbook.

Gavin

[NGOLF.U]

happend to me but it was just a vacuum leak

[geoff_gti]

yeah i've had the same problem with the revs jumping around between 1200 and 1400. my mechanic did clean out the throttle body etc and said if it continued to reoccur i would need to get a new TB which isn't cheap. when ever it happens my cruise control won't work either, only quick fix is to cut the engine and restart i've found

[bert]

Exactly whats happening to me right now (including cruise control not working), however happens all the time and revs really lurching around between 1200-1600 RPM at idle and car hops around whilst driving at very slow speed.

Diagnostics returned error codes:

1) throttle control lower limit not reached
2) throttle control module internal fault

In the process of sourcing a new TB.

[geoff_gti]

Good ol' TBs!
I often feel when my goes on the blink too - I'll be sitting at the lights with my foot on the brake, the pedal drops a little bit under my foot & then the idle start going up... lol. Not always but I have noticed it sometimes. (PS brakes continue to work fine after, must just be a slight dip in the pressure fot that instant...)

[datracer99]

happend to me but it was just a vacuum leak

Hi
Sorry to bring back an old thread, but I've just started having idle issues with my 2007 MkV GTI.
Vagcom indicates an air leak, so possibly same issue as NGOLF.U
Just wondering if I can get any ideas on where to look for the air leak. Are there any common pipes which fail early?

Thanks
David

[Morry]

Mines doing the exact same thing (2000 MK4 Golf 2L 5spd) so ill be looking at cleaning the TB soon and hoping its a small air leak after the MAF.

[JustCruisn]

The air leak is likely to be in a vac line not the intake air flow.
Check all lines near the throttle body and brake booster.

[karmen]

what fuel and how many k's on it may be a lead (leed not lead metal)

[h100vw]

what fuel and how many k's on it may be a lead (leed not lead metal)

Did you intend to reply to a post that's 7 years old??

[karmen]

did not see that but others can benefit
guess that's why we keep the threads that long almost as long as the ole cars, cheers, K