All Things Mk5 > Mk5 General Area
whoosh.....stutter........CheckEngineLight! [fixed pg5]
Phil Mcavity:
flash it back to standard without the map would be the best starting point tbh.
gazbutS3:
--- Quote from: john_o on November 27, 2008, 07:34:09 pm ---Awesome are on the case. And have been nothing but helpful , Jims a top guy :happy2:
Initially my continuing faults were cylinder 3 misfire BUT on actually logging the car actually shows misfires on all cylinders.
Of which the main problem is that at high rpm the requested vs actual drops off significantly (although not to fuel cut levels) but enough to trigger my misfires. :surprised:
The problem is that the car should have enough capacity to deliver this, so I have an underlying problem that means my car cant.
Obvious starting points have been new std rail pump / PCV etc , none of which have helped.
std rail is 110 bar , with APR software requesting 130ish (to maintain AFR levels for the EGT temp)
Usually low rpm is the problem area!
Next steps are looking at the fuel system from rail to tank , filters etc. And to see if I have some cr*p at the bottom of my tank.
Its could also be an injector problem (I have seen S3's on audi sport with high rpm misfires!)
Its an unusual case , esp as my car ran like a train 2 days after the remap at Prosport under load several times to the redline (no fault codes!), go figure :chicken:
out of all the remapped cars it did have to be mine thats a 'problem' child :sad:
Anyway I have every condfidence it will be resolved soon.
--- End quote ---
several of the 08 S3 cars have shown this exact fault John, shows up as cylinder 3, but evident on all, when revo'd, mine being one of them. 07 cars don't do it and can run really aggresive settings, but 08 cars can't. Nobody knows exactly why, but my misfires cleared up when I put the downpipe on so the thinking is lampda sensor readings, this has been backed up by a few different people. But your car is 07 isn't it, but lampda sensor maybe?
john_o:
My cars a 57 plate so it could be crossover. good points though Gaz thanks
Phil , the car has been run in stock mode back to back with mapped and logged and no faults. (i.e the requested vs actual match)
But thats because standard map only ever requests 110bar max.
Its that additional headroom (which should be available) that it just wont give.........
Hurdy:
I know how you must be feeling at the moment John. Whenever my car wasn't running right it really P1ssed me off. Keep the faith and it'll come out okay in the end :happy2:
john_o:
Cheers for the positive words Hurdy , yeah its not the route Id planned lol but it will happen.
The car actually runs fantastic 99% of the time , as long as I dont extend the revs too high
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version