![]() ![]() I go under control module/ then engine/ then Meas. and according to the Ross tec wiki I am supposed to Use Measuring Value Blocks (MVB) to Check Timing Chain but I have no idea how to do this. My advice if you have a TReg, sell it! They have the worst design and production faults of any car since Moscovitch went bankrupt! German reliability my shiny metal arse! Even the French make better cars than VW pump out these days. I am getting code 17748 Camshaft Position Sensor (G40) / Engine Speed Sensor (G28): Incor. I have had every major TReg ailment and managed to fix them all myself, but this one is the straw that broke the camels back. ![]() If that fails then I will drive it till it goes bang and tourch it. I will try a flush and a new hydraulic tensioner. This is a well documented production fault, but you have to dig it up.īad news is 12 months later, noise is back! They must have done a dodgy job. ![]() I gave it to VAG garage, cost me 3500 USD. Engine out, or at least lifted and work on the top! Not easy. Fix = replace both gears, timing chains and chain riders. Once warm tensioner system catches up and runs normal. Once this reaches beyond the capabilities of the tensioner system then cold operations mean noise and engine DTC. Result left gear wears much faster than right, leading to misalignment between cams. Much research shows left bank cam tensioner gear was not heat treated to spec on production. ![]()
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