GolfGTIforum.co.uk
Model specific boards => Golf mk4 => Topic started by: ian007miles on 06 March 2010, 15:39
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Right I cleaned the throttle body this morning and boy did it need, now I have a problem when I'm driving and come to stop the revs go to 2000 rpm and then they take about 15 seconds to drop back to normal, the engine is a 18t 1999 agu, has any one had this problem before and how do I fix it, thanx ian
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mine was cleaned yesterday did you clean around the edge of the flap that opens and closes as this can stay open when its at idle if not cleaned
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I just said the same thing to my mate who actuly done the cleaning and he said he only cleaned wot he could get to with his fingers so it could still be dirty in the corners so off it comes again tomorro for another clean thanx for the help
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just drive it around or give it 30 miles and it should sort itself out
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I've already done 37 miles and it's still the same
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mate take it fully off and clean all the insides and the inside of the flap along the thin edge. I watched the vag guy do mine yesterday ifs its not clean it will give rough running and idling.
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Make sure its thoroughly clean, whilst doing it disconnect battery negative(-) terminal, *Leave battery disconnected for 1hr* Then reconnect, ECU will then re-evaluate.
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this will add to the issues as all the basic settings may be lost if it doesnt reset you will need it on vag com if you disconnect the battery
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Should I leave the battery connected then?
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Get some more miles under it :wink:
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mate all i know is my car had a new starter fitted this week vw disconected the battery my rev counter was all over the place nd the car kept cutting out. I took it back they cleaned out the throttle body out when i asked why they said when you disconect the battery it upsets the settings so as said leave it connected and give the TB a real good clean.
:grin:
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Cheers for all the help ille have a go tomorro and iple update thanx ian
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Hi justvto let you all no I took the throttle body off again to day and cleaned it again around the butterfly and even in the little pipe at the top and now it's all ok and runnig fin and the revs are steady. Thanx for all your help
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glad to be of help.
:laugh:
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Did mine today. It wasn't as dirty as I expected to be honest.
Probably means my occasional rough idle is down to something else :lipsrsealed:
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ECU adapts settings over around 25/26miles.
Disconnecting battery just makes it do it straight away fresh.
It doesn't "Cause" problems and no vagcom is required.
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on my mtor when cold start the revs sit in between 1k-2k till it warms up then settles this normal or is this something to do with my splitter valve being open?
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The info I put up was from the local vag garage they said after the battery is disconnected it can cause the settings to default.
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I cleaned my TB and it seems to run worse, i got right in and cleaned every bit i could but it still isn't normal after 500 miles of driving. It's an agu with cable throttle, idles at 1100rpm when it's warmed up, used to be 800rpm
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The info I put up was from the local vag garage they said after the battery is disconnected it can cause the settings to default.
No thats exactly what they do...Default and then counter and adapt again rather than taking 26 miles to do it.