Author Topic: golf running rough on tick over revs going up n down  (Read 2073 times)

Offline yougy

  • Not said much yet
  • **
  • Posts: 80
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.
thats fooked it

Offline MoMartin

  • Here all the time
  • ****
  • Posts: 408
Re: golf running rough on tick over revs going up n down
« Reply #1 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.

Offline yougy

  • Not said much yet
  • **
  • Posts: 80
Re: golf running rough on tick over revs going up n down
« Reply #2 on: 01 May 2016, 10:57 »
looks like my post cat 02 sensor down no voltage
thats fooked it

Offline Dalo Harkin

  • I live here
  • *****
  • Posts: 2,070
Re: golf running rough on tick over revs going up n down
« Reply #3 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
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline yougy

  • Not said much yet
  • **
  • Posts: 80
Re: golf running rough on tick over revs going up n down
« Reply #4 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
thats fooked it

Offline Dalo Harkin

  • I live here
  • *****
  • Posts: 2,070
Re: golf running rough on tick over revs going up n down
« Reply #5 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
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)