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Model specific boards => Golf mk3 => Topic started by: keithcdb on 22 May 2003, 23:36

Title: rough idle
Post by: keithcdb on 22 May 2003, 23:36

I own a mk3 golf gti 2.0 16v (93)
It starts ok and revs well, put the foot down and it really shifts !
but at idle it runs really ruff! it has a k&n filter fitted (not by me) not sure if it is original?
Any help gratefully received

Cheers keith      ???

Title: Re: rough idle
Post by: trebor.vr6. on 05 June 2003, 01:22

What do you mean by ruff. How many revs at idle.? Is there any shake or juddering  

Title: Re: rough idle
Post by: keithcdb on 06 June 2003, 23:06

it revs around 800rpm but there is a bit of shuddering going on if i am sitting at traffic lights and if i give the throttle a quick blip it drops right down to almost stalling !!

any ideas

Title: Re: rough idle
Post by: trebor.vr6. on 07 June 2003, 22:52

The idle speed sounds spot on. ?I think your engine is ABF with a multi-point ?injection system. Maybe one of the injecter is not opening and closing at the right time. Try a couple of bottles of injector cleaner when you next fill up the tank. It sound like your engine needs a clean how about changing the oil while your at it. I would suggest a minium of  every 8 thousand miles  possibly less.......!

Title: Re: rough idle
Post by: Mikester on 02 December 2009, 19:47

Clean the throttle body.

lol :)

Title: Re: rough idle
Post by: Deano2711 on 02 December 2009, 19:55

+1  Clean the throttle body. My 8v had a similar problem until I cleaned the throttle body Monday night and now it's ok again. It's a fairly straight forward job.     Cheers     Deano

Title: Re: rough idle
Post by: javalin on 02 December 2009, 20:03

sounds like its running rich - test & change the coolant temp sensor and/or the engine temp sensor if fitted.

Title: Re: rough idle
Post by: justalex81 on 02 December 2009, 20:52

check the vac pipe from the inlet manifold to the ecu it senses the inlet air pressure. if it's knackered then the car will idle like a bag of sh!t

Title: Re: rough idle
Post by: VW BUSH on 02 December 2009, 20:57

You need Vag Com/Fault computer + Carb cleaner for Mk3's
Then when that fails come on ths forum for abuse help  :grin:

Title: Re: rough idle
Post by: t-tim44 on 17 December 2009, 12:14

mine did this as well. its was the MAF sensor. Mine was the hitachi type. Take it out, put boiling water into a bowl, give the maf a quick rinse in it, leave it a few secs and dry it off with an air line. That fixed it! Clean the TB too but as this is the usual problem.

Title: Re: rough idle
Post by: paultownsend on 17 December 2009, 12:16

no maf on a 16v matey

Title: Re: rough idle
Post by: Walkerboy on 18 December 2009, 16:29

dude i had same prob,was ok running but when i stopped at traffics lights it kept on stalling as the revs dropped.got my mate around from g-works and he plugged his pc into the ecu,some thng to do with the ecu showing faults but no faults on the car.he cleared then and now working ok

Title: Re: rough idle
Post by: t-tim44 on 24 December 2009, 12:30

is there no MAF or Air Flow Meter on a 16v?