noise from diff

[markiboo21]

Hi there, I've got a 1999 gti,  my problem is this,  every time I pull off I get a weird churning noise, I then took it up on lifts and I found when I turned the wheel fast by hand, both wheels lock up and the noise comes, but when I turn the wheel slowly and increase the speed there is no noise. The noise comes from the diff but would it be a bearing that causes the noise or would it be the diff on its way out? The next step I took was I disconnected the drivers side drive shaft and turned the front passenger wheel slowly and it felt like the diff was grabbing slightly. I'm hoping it will be a bearing. Has anyone experienced the same problem? If so what did you do?

[davidgtrr34]

When your driving can you feel a vibration in the clutch when you press it

[gti_shaun]

Sounds like bad news to me mate, my old box did a similar thing, the pin that has the planet gears on inside the diff  was rubbing on the gearbox case internally due to roll pin snapping and allowing the rod/pin loose, ended with gear oil everwhere and one knacked gearbox.

[markiboo21]

I can't feel any vibration from the clutch when it's depressed. So a replacement box is needed  another thing I found is that when I'm at a stand still with full lock to the right and pull off the noise is worse, could it be inner cv joint?

[gti_shaun]

Id have to hear the noise to be confident but the diff problem is quite common across the range of mk4 petrol engine boxs, your best bet, assuming your not a mechanic is to take it to be checked at a garage.

[markiboo21]

I did take it to a garage and they said it was the drivers side inner cv.  So changed that and the noise is still there. Should I bother changing the other inner cv or should I just find a replacement box?