RS6 C5 New Owner just gone into Limp Home Mode!
Posted: Wed Jul 17, 2013 5:34 pm
Hi All, firstly great forum - have been having a read through previous posts but can't find anything specific to the issue that has just developed with my recently aquired RS6. Hopefully someone might have some experience or advice on the matter.
Have had the rs6 for a couple of weeks and it's been running superbly well, a serioulsy quick and addictive bit of kit. Some background on the car ;It has been remapped to over 500 bhp, has had both the turbos and intercoolers replaced within the last 15k miles and has a full service history. It also a miltek exhaust fitted with race cats.
So had a great drive the other day and let it cool down after the run for 10 mins before turning off etc. Then when I went to lock the car it wouldn't communicate with the key fob (i'm sure this is entirely unrelated but thought I would mention it just in case!), so left unlocked and then returned to lock later where it locked first time off the remote.
The next morning drove the car a short journey and noticed it wasn't performing, both turbos not cutting in and engine seemed down on power even for natural aspiration. I nursed it to my lock vw specialist, who advised it was in limp home mode. They ran a scan and it came back with a lots of codes relating to the exhaust/cats which assum is probably just a by-product of the aftermarket exhaust and cats?
One code for a speed sensor which was a known intermittent fault which would sometimes put the abs and traction control light on the dash.
So left car with the vw specialist (who have limited expericence of working with rs6) and they phoned to advise that "the right bank of the engine is not drawing in any air" apparently they have ruled out the MAF by disconnecting and taking readings.
They suggested it might be a blockage in the inlet manifold , does this sound plausible as this is apparently a big job to remove and check. The mechanic wondered if these vehicles had any bmw style "swirl flaps" fitted which might have dislodged to cause the issue?
Does anyone know of any other issue which might cause the symptom of no airflow on one side of the engine (right).
I am obviously going to need to get the car to a specialist but in the mean time if anyone can suggest some basic checks i might get the garage to perform this would be great!! I was hoping it might have been a diconnected turbo pipe or similar!
Many thanks for any help in advance
Fraz
Have had the rs6 for a couple of weeks and it's been running superbly well, a serioulsy quick and addictive bit of kit. Some background on the car ;It has been remapped to over 500 bhp, has had both the turbos and intercoolers replaced within the last 15k miles and has a full service history. It also a miltek exhaust fitted with race cats.
So had a great drive the other day and let it cool down after the run for 10 mins before turning off etc. Then when I went to lock the car it wouldn't communicate with the key fob (i'm sure this is entirely unrelated but thought I would mention it just in case!), so left unlocked and then returned to lock later where it locked first time off the remote.
The next morning drove the car a short journey and noticed it wasn't performing, both turbos not cutting in and engine seemed down on power even for natural aspiration. I nursed it to my lock vw specialist, who advised it was in limp home mode. They ran a scan and it came back with a lots of codes relating to the exhaust/cats which assum is probably just a by-product of the aftermarket exhaust and cats?
One code for a speed sensor which was a known intermittent fault which would sometimes put the abs and traction control light on the dash.
So left car with the vw specialist (who have limited expericence of working with rs6) and they phoned to advise that "the right bank of the engine is not drawing in any air" apparently they have ruled out the MAF by disconnecting and taking readings.
They suggested it might be a blockage in the inlet manifold , does this sound plausible as this is apparently a big job to remove and check. The mechanic wondered if these vehicles had any bmw style "swirl flaps" fitted which might have dislodged to cause the issue?
Does anyone know of any other issue which might cause the symptom of no airflow on one side of the engine (right).
I am obviously going to need to get the car to a specialist but in the mean time if anyone can suggest some basic checks i might get the garage to perform this would be great!! I was hoping it might have been a diconnected turbo pipe or similar!
Many thanks for any help in advance
Fraz