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Mcglynn

Limp mode when underload at 70mph

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I have a mk5 tdi 2.0gt 54plate the car has been going into limp mode and losing turbo at about 70mph, when I restart the car the fault has gone doesn’t turn a EML light on, I have changed the fuel filter as was black, changed the G62 sensors, and replaced the MAF sensor, I have taken the boost pressure sensor off and cleaned this, I have had the turbo checked and there isn’t any play in turbo and all moving good, I did have a EGR daily code but once cleared from the ECU this hasn’t returned, any advice would be welcomed 

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Hi....welcome to the Forum

100% most definitely the variable vanes sticking in the turbo.
You can either try cleaning it with a Turbo Cleaner solution 

https://www.ebay.co.uk/itm/Power-MaxedDiesel-Turbo-Clean-Kit-Removing-Carbon-Deposits-Improving-Performance/401762692999?epid=1943810068&hash=item5d8aec2f87:g:ZfkAAOSw0IBc0Lc5

The alternative to replace the turbo cartridge which is a lot cheaper than replacing the whole turbocharger unit.

https://www.ebay.co.uk/sch/i.html?_from=R40&_sacat=0&_nkw=vw+golf+mk5+tdi+turbo+cartridge&_sop=15

Let us know what you find

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