GolfGTIforum.co.uk

Model specific boards => Golf mk4 => Topic started by: pickles on 12 December 2011, 12:43

Title: Bad Idle ?
Post by: pickles on 12 December 2011, 12:43
Just curious but iv noticed that when i drive up to a junction or traffic lights etc and come to a stop my revs seem to fluctuate for a second or to and then settle bk to around 8-900rpm, im assuming it has something to do with the maf< maybe not tho, any1 shed any light, thanks in advance
Title: Re: Bad Idle ?
Post by: jamie1989 on 12 December 2011, 12:48
Id say if you have a 1.8t possible throttle body clean.
Take the intercooler pipe off and undo 4 alan key bolts, unclip any sensors or cable (AGU). Give the throttle body a good clean using carb cleaner this may sort the little fluctuations out.
Title: Re: Bad Idle ?
Post by: pickles on 12 December 2011, 12:50
Id say if you have a 1.8t possible throttle body clean.
Take the intercooler pipe off and undo 4 alan key bolts, unclip any sensors or cable (AGU). Give the throttle body a good clean using carb cleaner this may sort the little fluctuations out.

thanks for the quick reply m8, been thinking that as well and seen the guide on here, may give it a bash today
Title: Re: Bad Idle ?
Post by: BarryMKIV on 12 December 2011, 14:27
I had this problem a few weeks back. Cleaned the TB and everything was back to normal. Car ran so much smoother after it too. It's worth a try anyway.
Title: Re: Bad Idle ?
Post by: pickles on 12 December 2011, 19:34
didnt quite get to it today but will defo give it a good clean tomoz and report bk, cheers guys
Title: Re: Bad Idle ?
Post by: stevelfc on 12 December 2011, 20:33
dont you have to reset the throttle body after as i have heard rummers once they been cleaned and re fitted they rev high till you reset them useing a vag com
Title: Re: Bad Idle ?
Post by: pickles on 12 December 2011, 20:57
dont you have to reset the throttle body after as i have heard rummers once they been cleaned and re fitted they rev high till you reset them useing a vag com

im sure this doesnt apply to my AGU engine as it has a throttle cable
Title: Re: Bad Idle ?
Post by: richw911 on 12 December 2011, 20:59
dont you have to reset the throttle body after as i have heard rummers once they been cleaned and re fitted they rev high till you reset them useing a vag com

im sure this doesnt apply to my AGU engine as it has a throttle cable

Correct

http://www.golfgtiforum.co.uk/index.php?topic=87783.0
Title: Re: Bad Idle ?
Post by: james2 on 12 December 2011, 22:47
Hold throttle wide open/ engine off and intercooler pipe off and get a cloth with carb cleaner on it and get cleaning .No need to remove it.  :wink: My hand fits inside that hole.  :evil: I just did mine again ,runs sweat.
Title: Re: Bad Idle ?
Post by: pickles on 13 December 2011, 11:57
Hold throttle wide open/ engine off and intercooler pipe off and get a cloth with carb cleaner on it and get cleaning .No need to remove it.  :wink: My hand fits inside that hole.  :evil: I just did mine again ,runs sweat.

ideal, you must have small hands like mine then ;) lol
Title: Re: Bad Idle ?
Post by: richw911 on 13 December 2011, 18:00
Hold throttle wide open/ engine off and intercooler pipe off and get a cloth with carb cleaner on it and get cleaning .No need to remove it.  :wink: My hand fits inside that hole.  :evil: I just did mine again ,runs sweat.

Much better to remove it and clean it properly imo  :smiley:
Title: Re: Bad Idle ?
Post by: Wazzzer on 13 December 2011, 18:18
mine never needs cleaning  :smug:
Title: Re: Bad Idle ?
Post by: richw911 on 13 December 2011, 18:22
mine never needs cleaning  :smug:

Catch can  :cool:

Only done mine twice never been too black or had poor running because of it  :smiley:
Title: Re: Bad Idle ?
Post by: pickles on 13 December 2011, 18:28
ended up taking the TB off for all it was and gave it a good scrub , its shiny now
:), seems to idle a lot better although slightly higher RPM, its just over 1000 but is no longer spiking like it used to, will the revs flatten bk down to around 900 (which im sure is an average idle, correct me if im wrong ) or is this normal.
Title: Re: Bad Idle ?
Post by: richw911 on 13 December 2011, 18:29
ended up taking the TB off for all it was and gave it a good scrub , its shiny now
:), seems to idle a lot better although slightly higher RPM, its just over 1000 but is no longer spiking like it used to, will the revs flatten bk down to around 900 (which im sure is an average idle, correct me if im wrong ) or is this normal.


Yep just drive it a few miles that should do it  :wink:
Title: Re: Bad Idle ?
Post by: pickles on 13 December 2011, 18:37
ended up taking the TB off for all it was and gave it a good scrub , its shiny now
:), seems to idle a lot better although slightly higher RPM, its just over 1000 but is no longer spiking like it used to, will the revs flatten bk down to around 900 (which im sure is an average idle, correct me if im wrong ) or is this normal.


Yep just drive it a few miles that should do it  :wink:

cheers bud, :), oh n whats with the catch can, does that stop the TB from getting all sh!tey
Title: Re: Bad Idle ?
Post by: richw911 on 13 December 2011, 18:45
ended up taking the TB off for all it was and gave it a good scrub , its shiny now
:), seems to idle a lot better although slightly higher RPM, its just over 1000 but is no longer spiking like it used to, will the revs flatten bk down to around 900 (which im sure is an average idle, correct me if im wrong ) or is this normal.


Yep just drive it a few miles that should do it  :wink:

cheers bud, :), oh n whats with the catch can, does that stop the TB from getting all sh!tey

http://uk-mkivs.net/forums/t/269734.aspx  :smiley: