Gearbox problem

[cjj799]

Hi Folks,

My 97 400 seems to have developed a bit of an gearbox issue. When getting on and off the power in 5th there is a loud clunk/bang that seems to be from the gearbox.

It only seems to happen in 5 th and there seems to be a lot more slack in the drivetrain when rocking back in forth in 5th than in the other gears.

I did a bit of searching and it seems the T5 box can have issues with 5th. I presume it's gearbox out time but just wondered if anyone has any pointers as th the way to go?

[gruffalo]

Also worth checking the Diff bushes and UJ's as well before taking the gearbox out.

I think the T5 box in a Chim 400 is quite reliable, the Cerbera's on the other hand do have a reputation for eating 5th but normally it breaks up completely.

[Alun450]

I'd ask a Tvr expert to drive/ witness said clunk! I replaced all drive shaft UJ's and diff mounts, all clunking stopped, an expert will confirm what your issue is. Hope that helps.

[cjj799]

gruffalo said:

Also worth checking the Diff bushes and UJ's as well before taking the gearbox out.

I have checked them from under the car in a pit and there dosent appear to be much play in either diff or driveshafts.

The play seems to be in the gearbox when in 5 th gear only as I can rock it back and forth from the pit.

It is more like a sharp bang when the drive is taken up in 5th.