17965 - Charge Pressure Control P1557 - 35-00 - Positive Deviation

[ianlovatt]

Question:
Appreciate vacuum tubes, N75 and MAF options are still valid but has the innotec or powerboost(?) cleaner option fallen out of favour these days?

Waffle:
Think I've been got by the same thing as this recent thread (but thought I'd start my own instead of hijacking it):
Possible Turbo problem?

Car lost power above 2k rpm this morning but other than that seemed fine. On the drive home power had returned and once it had warmed up this time gave it a few revs and went up the same hill I'd crawled up in the morning fine. Got back and VCDS said the fault code in the title.

Just been slaving through the threads that came up in a search for "17965". Seems that most of the time people have been suffering gunked up VNT vanes.

This innotec cleaner http://www.innotecworld.com/products...hp?productid=6 seemed to be considered an option back in the day (some of the threads my search pulled up are ~10 years old now). In the thread above I noticed Crasher jumped straight to turbo rebuild as the most likely way to resolve an overboost.


Cheers,
Ian

[JimA4B6]

Try revive turbo cleaner I've had success on over ten tdi's with clogged veins, cleans a lot more than the turbo as well so a good service item.

[arman123]

Only way to completely fix the problem is a turbo rebuild or fit a refurbished turbo unit.

[Crasher]

Chemical cleaners are snake oil, they do not work. If you could see how much bead blasting force is required to blast off the carbon you would dismiss fluid treatments in an instant. I tried them and they do not work, in fact those that contain water, damage the turbine shafts and piston rings by causing rust. There is no substitute for doing the job properly.

[ianlovatt]

Ok thanks for all the replies. Seems like I need to find somewhere that does reconditioned turbos.

Cheers
Ian

Sent from my XT1039 using Tapatalk

[Gazwould]

Mr Muscle twice & wiggle actuator arm .

[Crasher]

I have seen Mr Muscle cause turbine shaft piston ring failure due to rust as it is water based but chemical treatments just don't work long term if at all. The last time I did one using Innotec was about 15 years ago on a 98 A3 TDI, it took the arm from sticking to stuck... Funnily enough the same chap is in today but with a different car, about three down the line, turbo not long rebuilt but blowing oil out of charge air pipes, over boosting, coolant full of oil, rattling DMF....