All Things Mk5 > How to Guides / Troubleshooting
Problem with the S3, strange.. Help would be great!
MAT ED30:
How old is the car and how many miles has done? And I am sure on vag com if you go into engine u can check for missfires and also do a readyness check to make sure all things are working as they should but do this test without the engine on, and you can also check each of the cylinders for missfires and also check the coils with the engine running
MAT ED30:
Could it be down to the inlet Mani sticking as this can make them missfire
four!:
Perhaps a quick compression test, compare with the 3 good cylinders to rule out mechanical damage on no.4 ?
jonnyc:
--- Quote from: SteveP on July 18, 2009, 09:20:43 pm ---I would have though a connection issue with the coil pack would throw an open circuit error TBH :confused:
Could you try with the coil pack on cyl 4 disconnected to see if it does throw an error?
--- End quote ---
I did go through them disconnecting to see, with no.4 unplugged it ran better than with it plugged in.. With each of the other 3 unplugged it was running even worse (probs only on 2 cylinders)
I have only had it on a code reader, and not Vagcom, but to be fair they should see the same things..??
--- Quote from: MAT ED30 on July 18, 2009, 09:39:40 pm ---How old is the car and how many miles has done? And I am sure on vag com if you go into engine u can check for missfires and also do a readyness check to make sure all things are working as they should but do this test without the engine on, and you can also check each of the cylinders for missfires and also check the coils with the engine running
--- End quote ---
07 and 35k.. I have done a readiness check, all was ok..
Need to do some much deeper digging..
--- Quote from: MAT ED30 on July 18, 2009, 10:00:05 pm ---Could it be down to the inlet Mani sticking as this can make them missfire
--- End quote ---
Possibly, never heard of this before, dont fancy removing the inlet manifold myself to be honest, dont know how this would make just one cylinder not fire??
--- Quote from: four! on July 18, 2009, 10:04:56 pm ---Perhaps a quick compression test, compare with the 3 good cylinders to rule out mechanical damage on no.4 ?
--- End quote ---
I need that doing yes, I really hope its not, but I think there is a chance its done a piston / ring..
snapey:
I'd just take it into Audi on Monday matey, save yourself a load of stress.
I might sound quite negative towards it by saying that but that’s what I'd personally do with it being under warranty.
Luke
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