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Butchers Boy



Member Since: 10 Jan 2016
Location: Essex
Posts: 426
United Kingdom 2010 Defender 90 Puma 2.4 HT Stornoway Grey
Turbo cleaner - Turbo Overboost
I have a 2005 VW T5 2.4TDI which has started to go in to limp mod under acceleration sometimes only light acceleration in 6th gear on motorways which can be very annoying trying to pull over to stop/start the engine to continue the journey. All its showing when plugged in is 'turbo overboost' which can be a result of a dirty turbo? I properly need a new turbo but might be worth trying a turbo cleaner has anybody on here used one and if so which one?

A small local garage plugged a fault code reader and came up with the 'overboost' fault cod but I'm thinking I should try and get a more in depth diagnostic any suggestions what sort of diagnostic I should be looking for? 2010 Defender 90 HT

The longer I live..... The better I was!
Post #632101 18th Jun 2017 6:14pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3643
United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
I tried a turbo cleaner on a turbo at work off the engine, it smelled very much like oven cleaner and to be fair cleaned the crap off the turbo quite well, not sure I would want to do it with the turbo fitted as the crap would then have to go through the cooler and the engine. I'm sure there will be others along soon whom have more experience with it than me. the one I used was a Wynns aerosol DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #632119 18th Jun 2017 7:27pm
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alwoodley72



Member Since: 14 Mar 2010
Location: salisbury, wilts
Posts: 724
England 2008 Defender 130 Puma 2.4 HCPU Alaska White
Our old Passat tdi used to do this, I was shown to do the on/off on the fly as it were, ignition off then on again, slip the clutch and ' bump start' at 50, weird but worked. Our turbo was worn on the shaft, you could feel the play and at certain revs the vibration would put it out of the ecu safe perimeters. You can rebuild these with cheap rebuild kits, a mechanic buddy has done many of them. Our Passat was on 222, 228 miles when it started to happen!!
HTH

Cheers Alex 98 300 tdi 90 project
94 Range Rover vogue 4.2 lse
79 911 sc
08 130 double cab utility
Post #632122 18th Jun 2017 7:43pm
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gazman



Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652
United Kingdom 2003 Defender 90 Td5 HT Alpine White
I dont know the engine, but I had a 1.8t that used to do the same. This was a std style waste gate, and the problem was a seized waste gate, I dont know if yours is a variable vane though 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r
Post #632372 19th Jun 2017 10:05pm
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