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Model specific boards => Golf mk4 => Topic started by: yougy on 30 April 2016, 17:45

Title: golf running rough on tick over revs going up n down
Post by: yougy on 30 April 2016, 17:45

its a vw golf mk4 gti 180 turbo, running rough on tick over and smelling of fuel. iv a laptop with delphi but no 100% wot im doing on it yet, scanned with vcds lite the free version and no fault codes, car has been remapped.

Title: Re: golf running rough on tick over revs going up n down
Post by: MoMartin on 30 April 2016, 20:41

The cheapest and easiest one to check is a dirty throttle body, that's sorted my problems in the past.

Title: Re: golf running rough on tick over revs going up n down
Post by: yougy on 01 May 2016, 10:57

looks like my post cat 02 sensor down no voltage

Title: Re: golf running rough on tick over revs going up n down
Post by: Dalo Harkin on 02 May 2016, 10:19

Are you running a standard cat?
The post lambda won't adjust it that much to overfuel, check the throttle body and the MAF sensor first

Title: Re: golf running rough on tick over revs going up n down
Post by: yougy on 02 May 2016, 11:16

decat, new maf fitted and throttle body been changed, just picked up post 02 sensor when the stops I,ll fit it n see wots happens

Title: Re: golf running rough on tick over revs going up n down
Post by: Dalo Harkin on 03 May 2016, 13:38

Your post o2 sensor is there mainly to protect the CAT from damage so changing it will do nothing if you have a decat