scirocco 2.0 tsi rough idle and juddering?
scirocco 2.0 tsi rough idle and juddering?
have owned my rocco for about a month with no issues, but last night on the way home the car began to judder when under full throttle, parked up and noticed the idle was bouncing around between 800-1200 rpm, plugged in fault code reader, no codes and no lights on the dash. Went out again today and the problem seems to have resolved itself. Is this something i should have checked out? I had the exact same problem with my previous car (vectra vxr) turned out the timing chain had slipped a few notches and the engine would no longer start. Is it possibly related to the tensioner issue on 2.0 tsi engines or something more simple?
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Cuprabob
- Posts: 5036
- Joined: Sat Aug 07, 2010 2:31 pm
- I drive a: GT 2.0 TDI 170/184
- In: Rising Blue
- With a: Manual box
- Location: S/W Scotland
Re: scirocco 2.0 tsi rough idle and juddering?
It actually sounds like a coilpack possibly on it's way out. It will only store a fault if there are enough misfires detected or the Lamda picks up the unburnt fuel.
If it was timing or timing chain related it wouldn't fix itself and continue to run bad.
If it was timing or timing chain related it wouldn't fix itself and continue to run bad.
Re: scirocco 2.0 tsi rough idle and juddering?
is there a way for me to check without going to a garage ? could it possibly be the spark plugs? they were last changed along with a service aprox 8000 miles ago.
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Cuprabob
- Posts: 5036
- Joined: Sat Aug 07, 2010 2:31 pm
- I drive a: GT 2.0 TDI 170/184
- In: Rising Blue
- With a: Manual box
- Location: S/W Scotland
Re: scirocco 2.0 tsi rough idle and juddering?
It's unlikely to be the plugs if they were changed that recently.
It's hard to diagnose a coilpack failure unless it's running rough at the time in which case you just disconnect each one in turn and the one that doesn't cause it to run worse is the offending item. If there is enough misfires an intermittent misfire code and cylinder number will be recorded and from that you identify which one.
As with all intermittent issues it's hard to diagnose when it's running OK.
It's hard to diagnose a coilpack failure unless it's running rough at the time in which case you just disconnect each one in turn and the one that doesn't cause it to run worse is the offending item. If there is enough misfires an intermittent misfire code and cylinder number will be recorded and from that you identify which one.
As with all intermittent issues it's hard to diagnose when it's running OK.
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blower
- Posts: 466
- Joined: Tue Oct 06, 2015 7:01 pm
- I drive a: 1.4 TSI 160
- In: Reflex Silver
- With a: DSG box
Re: scirocco 2.0 tsi rough idle and juddering?
Does sound like a coil pack - usually they exhibit problems under full throttle when they are on the way out.
Before replacing any of them, do make sure they are fully seated down (remove them all one by one and push them back in firmly) - they can work their way loose over time and give intermittent problems.
Before replacing any of them, do make sure they are fully seated down (remove them all one by one and push them back in firmly) - they can work their way loose over time and give intermittent problems.
Re: scirocco 2.0 tsi rough idle and juddering?
thanks for the help, will make sure they are properly connected and if it happens again will test one by one hopefully that will solve it!