Volkswagen Fanatic
Hey all!
My 2012 VRS has developed an issue that has perplexed me and several mechanics.
Your help or ideas would be greatly appreciated please!
At any temp below the magic halfway 90 degrees, the engine stutters and coughs at the rev range of 1100-1400 rpm...
I noticed it particularly in slow traffic such as going at 40kph through a school zone.
We have checked and swapped over coil packs.
We have replaced the PCV valve assembly.
We have performed a full DSG service.
No error codes appear....and the issue goes away when warm (90 degrees or more)
Help!
Any ideas?
Thanks
2018 Ralyee Green RS wagon. Fully optioned.
Previous vehicles:2015 Volvo V60 Polestar (my one detour from VW/Skoda!)
2013 Platin grey RS wagon / 2012 White Polo GTI / 2009 Black 125 Tiguan
Volkswagenist
I was going to say we saw a minor version of that and it was the PCV valve. Any chance it's the divertor valve as it's also know to fail, but would imagine it would cause loss of power more than a stutter. Seems like something in the EGR system isn't working right. Our PCV failing actually also threw an appropriate error.
Volkswagen Fan
Cold start misfires? - sounds like the infamous carbon buildup on the intake valves & tract which is prolific on 2.0 TSI engines with as low as 40k miles. How many miles on your engine?
It may be worth checking how dirty the throttle body is and giving it a clean (and recalibration via vcds) before dis-assembly of the intake manifold and the labour intensive cleaning of the valves.
Volkswagen Fanatic
+1 for carbon build up in the inlet
Or a clogged injector - throw some injector cleaner into the tank, if it does not help then clean the inlet
2012.1 Skoda Octavia VRS DSG Wagon - Carbonio cold air intake and pipe - HPA Motorsports BBK 355mm rotors 6 pot calipers
APR Stage II ECU - APR 3" exhaust down pipe & high flow catalyst
APR/HP Roll bars - Eibach springs and Bilstien shocks
Supaloy lower control arms - Enkei 18*8 Wheels
Volkswagen Fanatic
you swapped the coilpacks, but did you check the plugs while you were there?
they probably need replacing. and yes you probably have carbon build up on the intake and the stalling means your throttle is probably choked up too.
Volkswagen Fanatic
Ok thanks guys!
I'll follow your suggestions!
Thanks again.
2018 Ralyee Green RS wagon. Fully optioned.
Previous vehicles:2015 Volvo V60 Polestar (my one detour from VW/Skoda!)
2013 Platin grey RS wagon / 2012 White Polo GTI / 2009 Black 125 Tiguan
Volkswagen Fanatic
Originally Posted by blower
Yep agree with this also. Had the same thing on our 2009 foggy after 80,000kms. Cleaned intake manifold of all carbon and car runs like a dream now.
Volkswagen Fanatic
I don't wanna snatch the thread but my Mum's MK2 118TSI (1.8T) Elegance is very lumpy when starting up, it makes the whole car shimmy slightly while warming up. Would that be the carbon intake issue? Whats the going price for it?
It has 90K on the clock
Last edited by readerr0r; 03-05-2016 at 08:25 PM.
MY16 Octavia RS 162 Race Blue Combi
MY12 Skoda Octavia RS 147 Black Combi - Sold
Volkswagenist
how hard is it to do an intake manifold clean?
mine stutters to a stall once in a blue moon when coming to a complete stop in heavy start stop traffic.
sounds like have carbon build up too.
about to hit 95k.
MY17 Superb 162TSI, Business Grey, Tech+Comfort Pack, APR ECU+TCU Stg 1, SLA, Rieger Splitter + Side Skirts, Eibach Pro-Kit Springs, Hardrace Swaybar, TPMS
New Dubber
+1 to carbon build up. This happened to ours and after mechanics spending weeks 'discussing the issue' with Skoda they pulled it apart and cleaned. Has run fantastic since.. I've always wondered whether it's fuel related or potentially our driving. We only do short km's up here in Darwin and mostly under 100km/h. The car has always had 98 except for the trip from Brisbane to Darwin.
Good luck with the fault!
Reply With Quote
Bookmarks