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Model specific boards => Golf mk3 => Topic started by: Wazzzer on 06 January 2011, 19:21

Title: help with my mates car...
Post by: Wazzzer on 06 January 2011, 19:21
Hi people, I need your help.

I'm due to look at my mates mk3 tomorrow to try and cure his running probs but I would like an idea of where to start...

Here's his description

Right, initially the revs would dive when you dip the clutch, which was only a problem when coming to a stop, as the car would die. Now it's evolved into erratic revs, loss of power, and cutting out. It seems to be ok when cold, and starts to manifest after 10 min+ of driving. My uneducated guess is something to do with the airflow. I've heard there's a valve that can get gummed up, which can cause issues. But I wonder if it's airflow meter playing up - although I'd have thought the meter would cause issues from cold?

Any ideas?
Title: Re: help with my mates car...
Post by: LowlifeDubber on 06 January 2011, 19:53
What engine would be a good start :wink:
Title: Re: help with my mates car...
Post by: *tell* on 06 January 2011, 20:32
if its a mk3 i would start with scanning it.
Title: Re: help with my mates car...
Post by: dom on 06 January 2011, 20:52
Hi people, I need your help.

I'm due to look at my mates mk3 tomorrow to try and cure his running probs but I would like an idea of where to start...

Here's his description

Right, initially the revs would dive when you dip the clutch, which was only a problem when coming to a stop, as the car would die. Now it's evolved into erratic revs, loss of power, and cutting out. It seems to be ok when cold, and starts to manifest after 10 min+ of driving. My uneducated guess is something to do with the airflow. I've heard there's a valve that can get gummed up, which can cause issues. But I wonder if it's airflow meter playing up - although I'd have thought the meter would cause issues from cold?

Any ideas?

This is a classic sign of a dirty throttle body, giving it a really good clean with some carb cleaner would be a good start  :smiley:
Title: Re: help with my mates car...
Post by: spunkymonkey on 06 January 2011, 21:08
Ecu temp switch maybe if its only running rough when warm.
Title: Re: help with my mates car...
Post by: tweed on 06 January 2011, 21:23
Ecu temp switch maybe if its only running rough when warm.

+1
Title: Re: help with my mates car...
Post by: Wazzzer on 07 January 2011, 07:12
Sorry guys MK3 8v.

I'll give the throttle body a clean then, I've got vag com so will give it a scan too. Temp sender sounds fimiliar from the mk4 so will look there too.

Ill let you know how it goes
Title: Re: help with my mates car...
Post by: Wazzzer on 08 January 2011, 12:47
Quick update, went out in it last night and nothing went wrong lol

But I did notice the revs dropping when coming to a stop if you dip the clutch. Also checked with VAG COM and nothing on there. Should the ECU take around 5 secs to recognise that the MAF has been plugged back in?

Any more input would be appreciated, we're stumped. 2.0 GTI 8V