Cleaning TDI VNT Vanes: On-car Vs. Bench

This video compares cleaning your (ALH/BEW/BRM) TDI VNT vanes on car through the EGR port versus removing the turbo and disassembling. I had always been curious how well the on-car did so I figured this would be a great comparison.
Great indication on the VNT vanes needing cleaning is usually overboost codes or limp mode after hard acceleration in 4th-5th. As you could see in this video about mid travel the vanes would stick when getting pulled down with vacuum and wouldn't return all the way back up.

[scopex]

WOW thats proved the point. I have a sticky VNT which keeps throwing my VW van into limp mode. I have the EGR removed to try the oven cleaner trick but it clearly needs to be removed. Sadly I have no flash garage only my driveway to work in. So to get to a VW van turbo to remove and replace is a 2 day job under the van!

[philtronmegabrew]

I have 11 years and 194000km of driving and my turbo is only now starting to stick, after seeing the on car cleaning I have decided just to buy and have installed a new turbo, at least that way I can hopefully get another out of it, thanks for your video, I was considering a mr muscle quick fix but realised it would only be a temporary fix. (Car is a 2009 VolkswagenTransporter T5)

[forgottenknowledge]

The BLS Borg Warner faces the other way. Hot side is left if your looking from the hood side

[davidleet]

No issue with oven cleaner rolling back into the aluminum head from the EGR port and damaging it, I guess. I still think I would take it off and clean it like your second example.

[fredturner]

Nice video! Hope you still do one of dropping the V10 on the pallet.

[mevio]

I appreciate your video and subscribed. Do you think the oven cleaner is safe for the seals inside the turbo?

[RinosaurPravi]

should i leave oven cleaner for 2 hours before starting car and taking it on the free road to blow out all dirty stuff out?

[BigGroupHug]

Aren't some oven cleaning products corrosive to some of the alloys in a turbo?
Or is there no aluminum on the hot side of a turbo?

[rachidnadir]

Hi, thanks a lot for This video. Can I use the WD-40 to clean it on the car?

[bronniesboy]

Don't mine fit the 3rd time in my alh Jetta 230000 miles. Easy as oil maintenance

[ethanhoullahan]

How would you go about installing an Egt probe in one of these turbos? I’ve been looking around but nobody has a good idea on how to do it. Some go through the egr port and others drill a hole where the exhaust runners merge.

[xshahidx]

Excellent video pal 👌🏼 Are you using brake cleaner spray to clean inside the turbo?

[ambiencesoothing]

Is it wd40, or break cleaner good for propelers?

[mercedsandoval]

I have a question in regards to using oven cleaner will the seals on the turbo resist the cleaner?