GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: richw911 on 13 January 2008, 14:27

Title: Throttle body clean.
Post by: richw911 on 13 January 2008, 14:27
 Just cleaned the throttle body on my 1.8T AGU. I must say if yours has never been done it its a must!! 15 min job and the engine is so smooth through the gears now  :wink:
 Ive got some after pics but forgot to do any before as i got carried away with the cleaning :grin: LOL  But believe me it was BLACK and full of deposits!!

(http://i163.photobucket.com/albums/t318/richw911/tb2.jpg)


(http://i163.photobucket.com/albums/t318/richw911/tb3.jpg)

(http://i163.photobucket.com/albums/t318/richw911/tb4.jpg)
Title: Re: Throttle body clean.
Post by: kyle_GTi on 13 January 2008, 14:51
was it easy 2 take out ???
Title: Re: Throttle body clean.
Post by: richw911 on 13 January 2008, 14:56
was it easy 2 take out ???


Yes mate very easy 5mm allen key and four bolts  :wink: have a look here:

http://uk-mkivs.net/forums/thread/857711.aspx
Title: Re: Throttle body clean.
Post by: kyle_GTi on 13 January 2008, 16:05
aaa thats for a turbo i take it :angry:
Title: Re: Throttle body clean.
Post by: richw911 on 13 January 2008, 16:33
aaa thats for a turbo i take it :angry:

Yeah mate 1.8T
Title: Re: Throttle body clean.
Post by: rheady on 13 January 2008, 16:39
Did you put a new gasket on after cleaning the Throttle Body. I think mine needs to be cleaned. Did you disconnect battery before taking it off?
Title: Re: Throttle body clean.
Post by: richw911 on 13 January 2008, 16:50
Did you put a new gasket on after cleaning the Throttle Body. I think mine needs to be cleaned. Did you disconnect battery before taking it off?

No,Because you dont need to replace the gasket. No you dont need to disconnect the battery as there is only a sensor plug which you just unplug.  :wink:
Title: Re: Throttle body clean.
Post by: rheady on 13 January 2008, 16:52
Thanks for the reply richw911. Will have a go on my days off.
Title: Re: Throttle body clean.
Post by: richw911 on 13 January 2008, 17:02
Thanks for the reply richw911. Will have a go on my days off.

No probs at all mate Well worth it, Dont forget to get some carb cleaner from halfords for £5  :smiley:
Title: Re: Throttle body clean.
Post by: Say bye bye on 13 January 2008, 17:09
They say you need to re-allign the throttle body with vag com after youve taken it off for a clean
Title: Re: Throttle body clean.
Post by: richw911 on 13 January 2008, 18:54
They say you need to re-allign the throttle body with vag com after youve taken it off for a clean

If you read the link i put up it says you CAN re allign it using vag-com if you have it, BUT YOU DONT HAVE TO.
Because the ecu will reset itself after 20 miles, Ive spoken to three other people who have also done this without the need for vag com.  :smiley:
Title: Re: Throttle body clean.
Post by: J5H VW on 14 January 2008, 11:22
Great post - and I want to do this very soon.  Aiming for this weekend!

Have read the link to the other forum that shows details of how to do this task too and there is some debate over whether you should be able to move the butterfly on a DBW engine, since it is controlled using a stepped motor. 

Some say its ok to "force" it in effect, others say to get someone to sit in the car, with ignition on (but engine off) and to press the throttle so that it opens the butterfly so it can be cleaned. 

What do you guys think, and I want to do this, but dont want to screw up the throttle body!  I have a DBW engine, AUM.
Title: Re: Throttle body clean.
Post by: J5H VW on 15 January 2008, 16:02
BUMPing this post.

Anyone got any advice on my post above, regarding cleaning throttle bodies on DBW cars?  :undecided:

Hoping to do this task this weekend, so any advice would be much appreciated.

Sorry to BUMP it - not trying to resurrect the dead!  :evil:
Title: Re: Throttle body clean.
Post by: richw911 on 15 January 2008, 17:57
Great post - and I want to do this very soon.  Aiming for this weekend!

Have read the link to the other forum that shows details of how to do this task too and there is some debate over whether you should be able to move the butterfly on a DBW engine, since it is controlled using a stepped motor. 

Some say its ok to "force" it in effect, others say to get someone to sit in the car, with ignition on (but engine off) and to press the throttle so that it opens the butterfly so it can be cleaned. 

What do you guys think, and I want to do this, but dont want to screw up the throttle body!  I have a DBW engine, AUM.

I would get some one to sit in the car and put there foot on the throttle tbh mate. Why force it if you dont have to? Defo worth doing this my car drives soooo much better now  :smiley:
Title: Re: Throttle body clean.
Post by: ashw831 on 19 January 2008, 15:01
any 1 know how to clean throttle bodies on the 1.8 20v n/a plz needs doin!! cheers
Title: Re: Throttle body clean.
Post by: Ashmond on 19 January 2008, 17:31
I did this on my car today and also sorted the boost problem out (turned out to be the chip the tuner put in my ecu)
Title: Re: Throttle body clean.
Post by: MaXXeH on 20 January 2008, 15:51
lo lads! i done this on my car today but i dont no if this is normal,  When i drive a 2k/3k and take my foot of the throttle it seems to hold the revs and drop very slowly is that normal?

my throttle was black!  just want to make sure this is correct or i may have to take it back of again :P
Title: Re: Throttle body clean.
Post by: richw911 on 20 January 2008, 16:39
lo lads! i done this on my car today but i dont no if this is normal,  When i drive a 2k/3k and take my foot of the throttle it seems to hold the revs and drop very slowly is that normal?

my throttle was black!  just want to make sure this is correct or i may have to take it back of again :P

Normal  :wink:
Title: Re: Throttle body clean.
Post by: MaXXeH on 20 January 2008, 17:23
good for me never did that befor :P  made how much a clean makes :P
Title: Re: Throttle body clean.
Post by: thehectorman on 23 January 2008, 13:35
Thanks for the post on the throttle body clean

Cleaned my TB today on 1.8t agu engine. All went well, it was filthy! I don't have access to vag com so I just took it for a drive bout 30 miles hoping to reset however it now idles @ 1400 rpm... sometimes up as far as 1600. Has anyone else had this problem? Theres a major improvement in the smoothness of the drive now just the idle problem still remains :undecided:.

Any suggestions?

Title: Re: Throttle body clean.
Post by: richw911 on 23 January 2008, 18:38
Thanks for the post on the throttle body clean

Cleaned my TB today on 1.8t agu engine. All went well, it was filthy! I don't have access to vag com so I just took it for a drive bout 30 miles hoping to reset however it now idles @ 1400 rpm... sometimes up as far as 1600. Has anyone else had this problem? Theres a major improvement in the smoothness of the drive now just the idle problem still remains :undecided:.

Any suggestions?



Mines an AGU. Have had no probs with it since. The engine will idle higher when cold (im sure you know this  :evil:) does it do it all the time?
Title: Re: Throttle body clean.
Post by: thehectorman on 23 January 2008, 19:08
Yea it does it all the time. The reason I cleaned it in the first place was to see if it would stop idling at 1200rpm now its worse :huh: Do ya think it could be the MAF? I may go to a garage n get it plugged into a comp n see if any faults pop up..
Title: Re: Throttle body clean.
Post by: richw911 on 23 January 2008, 19:31
Yea it does it all the time. The reason I cleaned it in the first place was to see if it would stop idling at 1200rpm now its worse :huh: Do ya think it could be the MAF? I may go to a garage n get it plugged into a comp n see if any faults pop up..

Ah it was doing it before i see. Yeah i would get a fault code reader on her and see what comes up TBH
Title: Re: Throttle body clean.
Post by: MaXXeH on 23 January 2008, 19:33
Yea it does it all the time. The reason I cleaned it in the first place was to see if it would stop idling at 1200rpm now its worse :huh: Do ya think it could be the MAF? I may go to a garage n get it plugged into a comp n see if any faults pop up..

yea mine is the same after i cleaned it  :undecided: dont get it and i vag com'ed it???
Title: Re: Throttle body clean.
Post by: thehectorman on 23 January 2008, 19:37
Yea I'll get it done asap cheers 4 d help richw911  :smiley:
Title: Re: Throttle body clean.
Post by: richw911 on 23 January 2008, 19:45
Yea I'll get it done asap cheers 4 d help richw911  :smiley:

No probs. Ive just got a fault code reader cost £35 very handy peice of kit saves paying bloody garages! (Wanted vag com really but cant afford a laptop at the mo  :rolleyes:)
Title: Re: Throttle body clean.
Post by: thehectorman on 23 January 2008, 19:57
Oh where did u get the fault code reader? That wud b handy lil bit of kit to have (Ideally I want vag com) but that wud do for d mo..
Title: Re: Throttle body clean.
Post by: richw911 on 23 January 2008, 19:58
Oh where did u get the fault code reader? That wud b handy lil bit of kit to have (Ideally I want vag com) but that wud do for d mo..

The bay where else  :grin:

http://cgi.ebay.co.uk/VW-GOLF-FAULT-CODE-READER-SCAN-ENGINE-ABS-SRS-AUTOTRANS_W0QQitemZ160200749086QQihZ006QQcategoryZ30921QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Title: Re: Throttle body clean.
Post by: MaXXeH on 23 January 2008, 20:13
like i said i have vag com and after clean mine is the same as urs 1400/1600 idle
Title: Re: Throttle body clean.
Post by: richw911 on 23 January 2008, 20:17
like i said i have vag com and after clean mine is the same as urs 1400/1600 idle

I think he want to check for fault codes for a dodgey maf sensor  :smiley:
Title: Re: Throttle body clean.
Post by: thehectorman on 05 February 2008, 00:15
Looks like a new throttle body is on the shopping list.. even after realigning with vag com the faults didnt clear. Anyone know what kind of price and wheres the best place to get one?
Title: Re: Throttle body clean.
Post by: rheady on 05 February 2008, 13:17
I was quoted £150 from VW.
Title: Re: Throttle body clean.
Post by: Mr Blue on 12 February 2008, 19:22
Im going to try this tomorrow

So its garanteed it wont idle high if i clean it. I dont have VAG.com anymore. Just want to be extra extra sure :evil:
Title: Re: Throttle body clean.
Post by: richw911 on 12 February 2008, 19:25
Im going to try this tomorrow

So its garanteed it wont idle high if i clean it. I dont have VAG.com anymore. Just want to be extra extra sure :evil:

No not guaranteed For some reason some lads had trouble with theres??
 Put it this way did mine 1.8T AGU and was so much better after, And had no issues with idle probs at all  :wink:
Title: Re: Throttle body clean.
Post by: Mr Blue on 16 February 2008, 17:48
Nice one! I dissconnected the battery and didnt need vag.com

It was clogged but nothing to effect the running i dont think. Worth cleaning though.

Alot smoother once I cleaned out the sensor pointed below (cant remember the name)

(http://img.photobucket.com/albums/v104/sat1s1ngh/tb4.jpg)

Used electrical contact cleaner (none flux one) and carefuly cleaned it with a cotton bud. Way smoother :cool:

Engine code: AUM
Title: Re: Throttle body clean.
Post by: richw911 on 16 February 2008, 19:37
Nice one! I dissconnected the battery and didnt need vag.com

It was clogged but nothing to effect the running i dont think. Worth cleaning though.

Alot smoother once I cleaned out the sensor pointed below (cant remember the name)

(http://img.photobucket.com/albums/v104/sat1s1ngh/tb4.jpg)

Used electrical contact cleaner (none flux one) and carefuly cleaned it with a cotton bud. Way smoother :cool:

Engine code: AUM

Good job mate :afro: defo worth doing isnt it!!  :wink:
Title: Re: Throttle body clean.
Post by: ub7rm on 17 February 2008, 14:18
For anyone needing to adapt their DBW TB, open bonet, open drivers door, turn ignition on(but dont start engine).  DO NOT TOUCH THE ACCELERTOR!  You should hear a high pitched noise coming from the TB for about 30 seconds.  Once this stops you are done. No need for VAG COM.

This deff works for my 2000 AUM but I undertand that for some newer cars it doesn't.  Seem to be a random thing.....

HTH