We have opened a new two workshop bays just for VNT cleaning and DPF issues cleaning and removalhttp://sticky-vnt.co.uk http://removal-dpf.co.uk
Midlands Leicestershire / North Wales and Chester
R-Tech VNT sticky turbo vanes repair http://uk-mkivs.net/forums/t/393599.aspx
In 90% of cases this will stop overboost limp mode, return better MPG and make the car more responsive.
PART 1 > http://www.youtube.com/watch?v=jgqDEBEOF_4
PART 2 > http://www.youtube.com/watch?v=UWyN53N_uMI&feature=related
PART 3 > http://www.youtube.com/watch?v=dhZYCUKOVRc&feature=related
PART 4 > http://www.youtube.com/watch?v=43W7Abmwhhk&feature=related
We also blueprint the VNT fittings and shims to allow for more clearance to help stop it happening again.
I have managed to save around 60+ Tdi owners £1200 each after main dealers have told them they need new turbo unit to stop the overboost. :happy2:
When a 1.9 TDI sees 400mb overboost condition for more than 10 seconds then main fuel IQ map reverts to a generic setting for limp mode to reduce the engine power output, but becuase the VNT is sticky the turbo will continue to overspool/boost.
The constant overspool/ boosdepend on vanes position, but both conditions cause heat build up and can warp / melt the turbine tiops and vanes. This happend more so on cars running stock mapping and can happen with less than 50k on the clock.
Pics of a VW Touran TDI 55k stock mapping which had the 17965 fault for 6month, this one we could not fix due to the melted parts..lol
I hope by posting this it saves someone splashing out £1200, when a basic £235 strip down and clean will fix the over boost in 90% of common 17965 faults.
R-Tech 01455 617233