MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: greygti on July 13, 2012, 10:40:51 pm

Title: Missfire/spluttering at low rpm or idle
Post by: greygti on July 13, 2012, 10:40:51 pm
It's a 08 GTI with a 3'' jetex TBE ,K+N intake and a rtech remap ,replaced plugs 4000 miles ago(oem plugs) and diverter and PCV  were replaced 1000 miles ago,getting a spluttering/miss at idle and up to 1500 rpm but ONLY when the engine is hot it started to happen today ,no ecu/fault lights . any ideas guy's ??
Title: Re: Missfire/spluttering at low rpm or idle
Post by: GrayMK5GTI on July 13, 2012, 11:08:08 pm
If it's doing it at idle I'd suggest coilpacks!
Title: Re: Missfire/spluttering at low rpm or idle
Post by: bacillus on July 14, 2012, 10:35:55 am
Quote from: GrayMK5GTI on July 13, 2012, 11:08:08 pm
If it's doing it at idle I'd suggest coilpacks!

This but I'd do a vcds log scan for misfires before fiddling with changing coilpacks...
Title: Re: Missfire/spluttering at low rpm or idle
Post by: greygti on July 15, 2012, 10:30:26 am
Done that yesterday and nothing showed up,cleaned and checked the plug gaps,i'm hoping it's just a faulty coilpack
Title: Re: Missfire/spluttering at low rpm or idle
Post by: bacillus on July 15, 2012, 08:20:05 pm
Quote from: greygti on July 15, 2012, 10:30:26 am
Done that yesterday and nothing showed up,cleaned and checked the plug gaps,i'm hoping it's just a faulty coilpack
Did you log misfire count with the engine running or just did a standard fault scan?
Title: Re: Missfire/spluttering at low rpm or idle
Post by: AFLConsult on July 16, 2012, 02:37:37 pm
Sorry a bit off topic, do you still have the UB spacers for sale?

I have an R32 and was running a blueflame cat back and all was
OK but I have fitted a Milltek cat back at the weekend and now the exhaust is fouling on the UB.

Can be contacted on following email

j.killeen@yahoo.co.uk

Thanks,
Title: Re: Missfire/spluttering at low rpm or idle
Post by: greygti on July 16, 2012, 09:34:17 pm
Quote from: bacillus on July 15, 2012, 08:20:05 pm
Quote from: greygti on July 15, 2012, 10:30:26 am
Done that yesterday and nothing showed up,cleaned and checked the plug gaps,i'm hoping it's just a faulty coilpack
Did you log misfire count with the engine running or just did a standard fault scan?

No i just did a standard fault scan with a snap on diagnostic tool ,how do you log a misfire ??
Title: Re: Missfire/spluttering at low rpm or idle
Post by: bacillus on July 17, 2012, 12:00:01 am
Quote from: greygti on July 16, 2012, 09:34:17 pm
No i just did a standard fault scan with a snap on diagnostic tool ,how do you log a misfire ??

If you use vcds then a live run logging blocks 015 and 016 will show up which cylinder is misfiring. You only get a fault stored if the misfire count exceed a certain value.
Title: Re: Missfire/spluttering at low rpm or idle
Post by: greygti on July 17, 2012, 10:23:34 pm
Cheers mate i'll do that 
Title: Re: Missfire/spluttering at low rpm or idle
Post by: greygti on July 19, 2012, 10:21:23 pm
Turned out to be the primary 02 sensor (pre-cat) ,£60.23p later for a bosch 02 sensor from andrew page and the job is a good un   :laugh:
Title: Re: Missfire/spluttering at low rpm or idle
Post by: bacillus on July 19, 2012, 10:47:21 pm
Quote from: greygti on July 19, 2012, 10:21:23 pm
Turned out to be the primary 02 sensor (pre-cat) ,£60.23p later for a bosch 02 sensor from andrew page and the job is a good un   :laugh:

Glad to hear that it's sorted.   :smiley:
Title: Re: Missfire/spluttering at low rpm or idle
Post by: greygti on July 20, 2012, 07:21:07 pm
Cheers mate  :happy2: