5th gear whine plus diff clunking

[matt91]

Got a bit of a problem with my gearbox, if i put it in reverse with hand brake on and go on and off the clutch it makes a clunking noise. If i do the same with the car on axle stands it doesn't but if i then apply the brake as well it'll make the clunky noise again. Also it whines in 5th quite loud, does this sound like the diff on it's way out?

 

[matt91]

forgot to mention the box was refurbished by agency back in july, covered about 1.5k miles max

 

[brucey106]

I just had my gearbox rebuilt, and mine was missing a plastic insert that carries oil to 5th gear. Maybe your is missing it?

 

[matt91]

maybe, it's still under warranty so i'll ring him up tomorrow see what he says... just means taking the box out again