pc759
A2OC Donor
Morning everyone.
here's a little piece of info that i hope you find useful - at least in your considerations - it happened on my wife's A4 54 reg 49000 miles TDIwhihc i also believe is a PD motor.
It was occasionally jerky and stalled a couple of times up the hill into the estate where we live when before it had gone ok.
I cleaned the MAF with carb cleaner etc and this seemed to do the trick.
Several reports came in about stalling at junctions etc but i couldnt get it to repeat the problem.
On the way home from Glasgow at xmas we lost all power and couldn't get beyond 60mph so i pulled in at southwaite and disconnected the MAF resulting in everything being much better as the car seemed ok.
I replaced with new from Audi and got fuel and air filters changed at same time - interestingly they were both marked 2004 despite me having it serviced by Audi for first three years and then locally thereafter.
After all of this I thought it would be ok but i detected a slight hesitancy when moving briskly through gears so finally put it in to my local garage; I was thinking along the lines of injectors? or or egr valve, or cracked pipes etc letting air in.
When they looked at it they found nothing but a sticking turbo actuator which they took off and cleaned and lubricated with WD40(!) to free it up
Result is the car is now back to how it used to be and goes very well again
I began to wonder how many of us may go down the fuel/air / injector routes
when this ought to be considered too.
It did take them a long time to find out an di ended up with a hefty labour bill but no parts
Hope this helps and doesn't confuse it is worth considering in my opinion. The actuautoe looks like a litttle metal bellhousing on top of the turbo and they are simply (on th eA4's at least ) a mechanical part whihc unbolts from what i recall of our TDI's we have something very similar along the top of our turbos too.
Paul
here's a little piece of info that i hope you find useful - at least in your considerations - it happened on my wife's A4 54 reg 49000 miles TDIwhihc i also believe is a PD motor.
It was occasionally jerky and stalled a couple of times up the hill into the estate where we live when before it had gone ok.
I cleaned the MAF with carb cleaner etc and this seemed to do the trick.
Several reports came in about stalling at junctions etc but i couldnt get it to repeat the problem.
On the way home from Glasgow at xmas we lost all power and couldn't get beyond 60mph so i pulled in at southwaite and disconnected the MAF resulting in everything being much better as the car seemed ok.
I replaced with new from Audi and got fuel and air filters changed at same time - interestingly they were both marked 2004 despite me having it serviced by Audi for first three years and then locally thereafter.
After all of this I thought it would be ok but i detected a slight hesitancy when moving briskly through gears so finally put it in to my local garage; I was thinking along the lines of injectors? or or egr valve, or cracked pipes etc letting air in.
When they looked at it they found nothing but a sticking turbo actuator which they took off and cleaned and lubricated with WD40(!) to free it up
Result is the car is now back to how it used to be and goes very well again
I began to wonder how many of us may go down the fuel/air / injector routes
when this ought to be considered too.
It did take them a long time to find out an di ended up with a hefty labour bill but no parts
Hope this helps and doesn't confuse it is worth considering in my opinion. The actuautoe looks like a litttle metal bellhousing on top of the turbo and they are simply (on th eA4's at least ) a mechanical part whihc unbolts from what i recall of our TDI's we have something very similar along the top of our turbos too.
Paul
