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View Full Version : Please Help A4 2.5 TDi Quattro Transmission problem



Keebs
07-06-2009, 05:45 PM
Big problem with transmission on my high mileage A4 Quattro Manual - not sure if its gearbox, transfer box/torsen diff or whatever but at slow speeds the car will suddenly lock up all 4 wheels and stop dead. At above 10 - 15 mph it doesnt do this but its VERY noisey. No noise when engine is on and my foot on the clutch but a definite noise when i let the clutch pedal out. It will still drive in every gear so i suspect the Diff. Does the gearbox house the diff/transfer box or can they be split? I suspect i need to replace the Diff but looking for cheapest way to do so. Thanks.

Keebs
22-06-2009, 11:54 PM
All sorted. Was Torsen Diff fault caused by low oil level in gearbox... the gearbox oil is cooled in part of the radiator and one of the transfer pipe seals had been leaking for ages. The engine undertray masked where the oil was coming from.

Lesson learned as needed a new box/diff - always check out all oil leaks and make sure they are rectified.