Freelander Auto Clunk and Jerk when cold

Jan 19, 2007 10 Replies

I have an 02 Freelander V6 ES 2.5 and it has done 50k miles and has been regularly serviced, most recently 4000miles ago.



A couple of days ago I noticed after a trip to some mountains (on road) that when I start it from cold, and for about the first 15 minutes of driving, each gearchange up or down is accompanied by a clunk and a severe jerking. The problems seems to alleviate after continual driving, and after about an hour, the gear changes are as smooth as can be.



Does anyone have any suggestions what this could be ? It doesnt feel like clutch wear....



Any help appreciated. dave



Subject line infers auto ........... Richard

So why does subject text compare drive to manual? (Clutch wear).

Nigel

Not a lpt of detail to go on, but could this be the front mounting bracket on the rear diff going? (Very comon)

Richard

It is an automatic gearbox, and I use the clutch-wear analogy, as I'm not familiar with the workings of an automatic. Its really weird that the bang is really harsh when starting out, after about 20 minutes there is no problem, and the gear changes are very smooth....

dave

Nigel wrote:

Hi

Sounds like a software issue in the gearbox ecu, there is a quick warm up cycle which kicks in when the gearbox is cold. I think what you are describing is a harsh gear change. Once warm it smoothes out. One thing you could try is using the tiptronic side of the box, and see if the problem is still there from cold. But it does sound like a dealer trip for a diagnostic check.

Nigel.

In message , Nigel writes

Don't auto gear boxes have clutches anymore?

If you're thinking of the internal clutches, apparently not any more, you used to have to occasionally replace internal clutches in auto gearboxes but when I asked my audi mechanic about this for my auto Audi A4 (1997) he said that the modern boxes don't use that technique any more. I don't know how they work these days. I think that old

3-speed boxes still use clutches but more modern four-gear-and-upwards auto boxes don't.

Auto boxes are connected to the engine via a torque converter, which is like a bowl of soup being spun by a turbine, with a locking mechanism when the turbine and bowl are spinning at similar speeds to lock them together.

Yes the Jatco has a multi clutch assembly, not a singular clutch which is what I read it to be in the original post.

Hence the question auto or manual.

Nigel.

Well that's negative brownie points for my audi mechanic then ;-)

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