I am currently trying to track down this whining noise in my A2 TDI. The noise stricly follows the road speed and I initially thought it was either a wheel bearing or a CV joint. So today I had the car in the air and checked all four wheels for play, smoothness and noise, but they all moved freely and quiet with no play at all. CV joints all looked and felt good too with only minimal play.
I recently swapped my gearbox to a second hand JDD box, and now I am wondering if its gearbox or differential noise.. The sound is a clear whine, not a rumble og grinding sound, and as mentioned it strictly follows the road speed. And it doesnt matter if the car is in gear or coasting in neutral, the whine stays the same and only goes down as the speed goes down. My knowledge about gearboxes is pretty basic so my question is, can I rule out the gearbox/diff when the whine is also present when coasting in neutral or clutch depressed.? Or are the cogs/diff still moving with the wheels even in neutral and could cause this whining sound.?
Thanks - Alex.
I recently swapped my gearbox to a second hand JDD box, and now I am wondering if its gearbox or differential noise.. The sound is a clear whine, not a rumble og grinding sound, and as mentioned it strictly follows the road speed. And it doesnt matter if the car is in gear or coasting in neutral, the whine stays the same and only goes down as the speed goes down. My knowledge about gearboxes is pretty basic so my question is, can I rule out the gearbox/diff when the whine is also present when coasting in neutral or clutch depressed.? Or are the cogs/diff still moving with the wheels even in neutral and could cause this whining sound.?
Thanks - Alex.