Early this year my TDi became undrivable on a motorway 200 mile trip. Constantly going into limp mode requiring a switch off to reset it.

2 tins of winns cured it for 4000miles but the writing was on the wall. I had a good look underneath but was put off with removing the subframe ect ect.

The fact that the best part of a £1000 for parts was also a damper.  + at 77 ive spent to much time on my back under cars

2 weeks ago it became undrivable again so after looking at all the video's re cleaning turbos I set to work.

I removed the top most sensor next to the turbo outlet, I then made a ? mark shaped piece of small brake pipe that would go into the sensor hole and can be fed into the top off the turbo housing. Once in place I used the tube off a can of WD40 compleat with nozzle fitted on top of a can of Mr Muscle to spray the oven cleaner directly into the top of the turbo housing.  I did this with the turbo hot for 5 secs the 1st time and the form came out the hole. Then gave it some more over night. It cured it after completely after 2 nights.

I have continued this treatment over the Xmas break Always taking it for a 25mile drive after leaving it soaking in overnight.  It must have moved lots of carbon as 5 secs blast was enough to see the foam coming out of the sensor hole the 1st time.. Tonight I gave it 10 secs and the only foam I saw was on the end of the copper pipe when I removed it.

So it seems that if you leave it over night in a hot turbo the foam turns to liquid them evaporates out of the sensor hole. Ive done 300 miles on short trips + a150 mile motorway trip today without hitch, + its doing 51mpg at 75 mph its never ever been that good. So under  £5 for Mr Muscle and I can remove the sensor in under 3 minutes without taking the engine cover off means its a no brainer.

Worked a treat for me on my MK1 Octavia, I had been suffering for years, always once the cold weather came and during the warm up period I had to drive it very gently to avoid the overboost burps & resets.

 

Lubricating and manually freeing off the actuator also helped.

How about a few pictures or a video guide next time you need to do it?

 

It may help others in the future.

It was a very comprehensive description which will help many people, those who can help themselves.

 

How about giving credit where it is due?

12 minutes ago, J.R. said:

It was a very comprehensive description which will help many people, those who can help themselves.

 

How about giving credit where it is due?

Agreed. A very comprehensive description which will no doubt help others and credit where credit is due, an innovate solution to what could become a common problem.

 

But who doesn't love a picture guide.

Posting pictures is beyond my skillset, my smartphone never leaves the countertop where it performs the functions that I begrudgingly had to purchase it for, when I work on my vehicle I dont even have my bombproof 2004 Nokia dumbphone with me, taking photos to share with others is the last thing on my mind, I have a memory for that, far from a perfect one neither are my descriptive skills.

 

So I respect and admire others who can describe things well and concisely, what Cap44 wrote painted a perfect mental picture for me, I would not want a picture guide.

Cheers JR  I have a great 20 year old SLR camera but never seem to have the time to download pics, same as my phone no apps ect I just use it to talk to people.

Old dog & new tricks  ect