slack in the transmission
slack in the transmission
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Discussion

V6ish

Original Poster:

370 posts

228 months

Thursday 22nd November 2007
quotequote all
An ever so slight hesitation when you feather the throttle in traffic, then it jerks into life, if your not delicate you can end up kangerooing? Keep the revs up when setting off its fine and it sonly noticable at crawling speeds.

I've had this on lots of cars and always called it "a bit a slack in the transmission", its nothing major to live with but what is it? Worn UJ's? I know its nothing to do with fuelling etc, purely mechanical I reckon.

any ideas?Cheers Grant

Barkychoc

7,848 posts

233 months

Thursday 22nd November 2007
quotequote all
Could even be a dodgy engine mounting flexing.

Try jacking up one rear wheel with it in 5th gear and turn the wheel in each direction to see if you can work out where the slack is. It's easier if there are 2 of you.

Chris

GreenV8S

31,017 posts

313 months

Thursday 22nd November 2007
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Often called backlash or drive line shunt. It's normal to have some, if there's a lot it implies that the transmission is getting tired, in which case you might want to start finding whether it's coming from anywhere in particular that might be on the way out.

V6ish

Original Poster:

370 posts

228 months

Friday 23rd November 2007
quotequote all
Okay, Thanks. Will get the car jacked up over the weekend. I hope it isn't the box getting tired already as its only done a warrented 45k?

Cheers

Barkychoc

7,848 posts

233 months

Friday 23rd November 2007
quotequote all
Gearboxes generally wear very slowly if it is only slight, so if there is a bit of backlash in there you'll probably find it wil stay that way for a long time.

Jed-S

660 posts

245 months

Friday 23rd November 2007
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If you have a light car and a sensitive throttle then you can get teh kangaroo effect and the kangarooing causes you to move your throttle foot. This was a real problem on my Westfield and I do have the same problem in my S on my rough drive. One trick is to push the foot against the side of the foot well to keep it steady and see if this reduces the effect.

Didn't you have issues with clutch judder though? I'm just wondering if this still part of the problem because you mention that if you keep the revs up when pulling away that it is ok. As I mentioned back then I had this issue but a clutch burning session fixed it.

V6ish

Original Poster:

370 posts

228 months

Saturday 24th November 2007
quotequote all
Jed-S said:
If you have a light car and a sensitive throttle then you can get teh kangaroo effect and the kangarooing causes you to move your throttle foot. This was a real problem on my Westfield and I do have the same problem in my S on my rough drive. One trick is to push the foot against the side of the foot well to keep it steady and see if this reduces the effect.

Didn't you have issues with clutch judder though? I'm just wondering if this still part of the problem because you mention that if you keep the revs up when pulling away that it is ok. As I mentioned back then I had this issue but a clutch burning session fixed it.
Yes you're right,well spotted. I did wonder if it is related. I've just come back from a drive I've probably built it up in my mind, its def there but I can live with it for now. I dare not try clutch burning as from what I can tell its still running the original clutch-so its just a matter of time anyway @ 45k I reckon another 15-20k max?

Edited by V6ish on Saturday 24th November 12:05

ChrisGadd

687 posts

259 months

Wednesday 28th November 2007
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Could this be a problem with the release bearing in the clutch or a cracked flywheel ?