A Dirty throttle body can result in poor running, mpg ect. Well worth giving it a clean. Should be done approx every 30k.
**NOTE**
If you have a DBW 1.8T you May need to do a Throttle Body Alignment using vag com after cleaning it.
It is not req on Cable-Throttle engines as it will self adjust. (I have AGU cable throttle and it did not need alignment)
First off undo the jubilee clip and remove the pipe. Then undo the four 5mm allen key bolts:
Next remove the electrical plug which is under the throttle body.
Remove the TB:
To clean the throttle body - Spray the carb cleaner onto the cloth (instead of spraying it into the throttle housing) and wipe out the dirt.
You can use cotton buds soaked in carb cleaner for hard to reach places. You can open the throttle body butterfly to clean inside it. It swings open like a cat flap. Get everything as clean as possible.
Remember to clean both sides!!
Yours will be black but should end up looking like this:
IF you have Vag Com:
Here the "how to" Re-Align the TB after removal:
http://www.ross-tech.com/vag-com/cars/throttlebody.html[Select]
[01 - Engine]
[Basic Settings - 04]
Group 060
[Go!]
It should say "Basic Settings: OFF" on the top of your screen.
Click [ON/OFF/Next] to turn on Basic Settings.
It should now say "Basic Settings: ON" on the top of your screen.
Once you do this you will see the top right display say ADP RUN. The TB adaptation is being done as soon as you switched basic settings on. You will see the values change and hear the TB cycle for the first few seconds then it will stop. Leave it in Basic Settings for about 30 seconds.
Click [ON/OFF/Next] to turn off Basic Settings.
It should now say "Basic Settings: OFF" on the top of your screen
Click the [Done, Go Back] button and you're all set.
Even if you don't do this your TB would eventually re-adapt itself over a few miles / start-stop cycles.
Note:
It MAY idle a bit higher after cleaning this is NORMAL and it will settle after a few miles of driving.
Since doing mine, i have noticed my car running a lot smoother and so have other forum users - well worth the half hour it takes to do!
The writer of this guide and GolfGTI.co.uk accept no responsibility of damage to your car when using this guide. Use at your own risk.
