Make a donation

Author Topic: Throttle body clean  (Read 5824 times)

Offline Pesky jones

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 2
  • -Receive: 19
  • Posts: 1639
Throttle body clean
« on: October 21, 2015, 11:47:44 pm »
So I want to clean my throttle body

Sometimes when I start the car (DSG) up after it's been cold (often in the morning) it will flutTer the revs slightly in first gear as I'm pulling off before going into second gear.

I want to clean the throtTle body to hopefully cure this, if it doesn't then its something else!

First off, can anyone tell me where it actually is in the engine? Can I clean it without removing it? Thanks

Offline rich83

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 165
  • -Receive: 802
  • Posts: 13444
    • MK5 Golf GTI
  • My Ride: https://www.mk5golfgti.co.uk/forum/index.php?PHPSESSID=7f2kr1le2uoe12ok4uud5232hl&/topic,19740.0.html
Re: Throttle body clean
« Reply #1 on: October 22, 2015, 12:10:21 am »
It's in the centre in front of the engine block. You'd need to remove it to clean it

Offline Pesky jones

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 2
  • -Receive: 19
  • Posts: 1639
Re: Throttle body clean
« Reply #2 on: October 22, 2015, 08:50:45 am »
Is it an easy job to remove rich? Do I have remove anything else to get to it? presumably engine cover

Offline rich83

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 165
  • -Receive: 802
  • Posts: 13444
    • MK5 Golf GTI
  • My Ride: https://www.mk5golfgti.co.uk/forum/index.php?PHPSESSID=7f2kr1le2uoe12ok4uud5232hl&/topic,19740.0.html
Re: Throttle body clean
« Reply #3 on: October 22, 2015, 09:33:54 am »
Engine cover, lower near side boost hose, throttle pipe, map sensor wire. Maybe some more bits. It's not easy

Offline Pesky jones

  • Just look at my post count
  • ******
  • Thank You
  • -Given: 2
  • -Receive: 19
  • Posts: 1639
Re: Throttle body clean
« Reply #4 on: October 22, 2015, 10:17:55 am »
hmm. I'll have to have a deeper look into it. If I do go ahead ill be sure to post a guide

Offline pudding

  • Global Moderator
  • Just look at my post count
  • *
  • Thank You
  • -Given: 2
  • -Receive: 690
  • Posts: 8354
Re: Throttle body clean
« Reply #5 on: October 22, 2015, 04:00:06 pm »
Removing it isn't necessary.  The only reason for cleaning the TB is remove the gritty carbon build ups that can form around the spindle area, which can affect the throttle position sensor slightly when it comes back down to the idle position.

I would just pop the intake hose off and give it a clean in said area.  Carb cleaner and a cloth and just prop the TB open with one hand, scrub with the other.  You'll need a mirror too as the TB faces the floor.  Once you've done that, run a throttle adaptation in VCDS and all should be golden again.  Oh and do that with the ignition off as moving the TB manually with the ECU on can create problems.


2007 ED30 | 2009 TDI 140 | 2016 BMW 330D