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Author Topic: Missfire/spluttering at low rpm or idle  (Read 3530 times)

Offline greygti

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Missfire/spluttering at low rpm or idle
« 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 ??
« Last Edit: July 13, 2012, 10:49:55 pm by greygti »
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Offline GrayMK5GTI

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Re: Missfire/spluttering at low rpm or idle
« Reply #1 on: July 13, 2012, 11:08:08 pm »
If it's doing it at idle I'd suggest coilpacks!
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Offline bacillus

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Re: Missfire/spluttering at low rpm or idle
« Reply #2 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...
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Offline greygti

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Re: Missfire/spluttering at low rpm or idle
« Reply #3 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
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Offline bacillus

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Re: Missfire/spluttering at low rpm or idle
« Reply #4 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?
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AFLConsult

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Re: Missfire/spluttering at low rpm or idle
« Reply #5 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,
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Offline greygti

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Re: Missfire/spluttering at low rpm or idle
« Reply #6 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 ??
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Offline bacillus

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Re: Missfire/spluttering at low rpm or idle
« Reply #7 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.
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Offline greygti

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Re: Missfire/spluttering at low rpm or idle
« Reply #8 on: July 17, 2012, 10:23:34 pm »
Cheers mate i'll do that 
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Offline greygti

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Re: Missfire/spluttering at low rpm or idle
« Reply #9 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:
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Offline bacillus

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Re: Missfire/spluttering at low rpm or idle
« Reply #10 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:
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Offline greygti

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Re: Missfire/spluttering at low rpm or idle
« Reply #11 on: July 20, 2012, 07:21:07 pm »
Cheers mate  :happy2:
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