GolfGTIforum.co.uk
Model specific boards => Golf mk3 => Topic started by: arkeye on 20 July 2011, 20:17
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any idea what could be causing this?
only had the car a few weeks but its been this way ever since i bought it. i noticed a broken wire on the air intake sensor which i repaired, i took the induction kit off which was almost completely blocked and have professionally cleaned it, its like new now but still no joys with better idling :cry:
its only cut out on me once when pulling up to a junction. it fires up perfectly but just sometime seems it wants to cut out
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Clean the throttle body. :wink: :smiley:
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+1 ^^^ clean the TB
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Is this easy to do? Is there a guide to assist me?
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Out of interest what engine code is it 1.8, 2l 8v or 16v If its engine code 2E on the 8v or abf 16v it could also be the ISV valve needs a clean or renewing. As for the cleaning throttle body you will need to take your intake pipe of the TB get some carb cleaner and a good rag, Open the butter fly on the throttle by pulling the throttle back and clean the best you can or take the TB off completely best to get a new gasket for it though as you need to make sure you seal them very well once you have finished cleaning :smiley: Easy job really mate
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Its the 2L 8V engine. Will see if I can clean the TB today although ideally I'd like to remove it to clean it and therefore need to get a new gasket for it. Really appreciate the help everyone. If the TB needs replacing is it worth getting an updated one?
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Its the 2L 8V engine. Will see if I can clean the TB today although ideally I'd like to remove it to clean it and therefore need to get a new gasket for it. Really appreciate the help everyone. If the TB needs replacing is it worth getting an updated one?
It wont, and no. However in the very unlikely event that it is knackered, I have a spare I could be persuaded to part with! :wink:
They just get filthy around the butterfly valve and restrict/interrupt airflow. Its the most common thing for rough idles and some clean them as much as every year. Trust me, when you take your intake pipe of, you will see.
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another thing to check is the maf. Induction kits can coat these with oil meaning the car will display symptoms like described and if thats the case some electrical cleaner for the wire is needed (you can test it by unplugging it and seeing if the engine changes how it's running)
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worth checking for air leaks in the intake and crank-case-breather pipes too.
J
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Thanks everyone, will do thorough check at the weekend and update this post as necessary
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It's worth checking the condition of the Crank Sensor, the one that lives beneath the oil filter. The connecton wire commonly break's and split's due to related heat and poor design. I replaced mine. Well worth a look
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well today i removed the airfilter and intake pipe to get to the throttle body, on first glances it was filthy but i checked all the travels of the butterfly valve and it all seemed to be ok and closing fully. i gave it a good clean anyways and sprayed a tiny amount of WD40 on it, fitted everything back on and fired her up everything seemed fine, drove her 15miles down the motorway and got home on the drive, idled perfect!! :laugh:
before it used to idle at about 750rpm but now its at about 950rpm. where before i'd dip the clutch when driving and watch the revs drop at the blink of an eye back to idle now they slowly fall, it all seems perfect!!
so thanks to all of you for all the advice, its all been very useful :smiley: and spot on obviously
arkeye
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Trying this myself today :smiley:
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Gave the throttle body, intake and breathers a good clean, couldn't believe how much crap was in there! Idles better but still a little fluttery, but it's much smoother in traffic and goes much better now :smiley: