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D2 - Transmission Gearboxes, diffs, drive shafts.

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Old 9th February 2015, 08:24 PM
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tonyt102 tonyt102 is offline
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Default Gearbox problem.

Got an issue with my gearbox. I've done a fair bit of searching and although there are a lot of problems reported, I can't see any of them which are similar to mine.

A couple of weeks ago, I got a small judder at low speed, gently accelerating up a small hill which has happened a couple of times since. Finished work tonight and went to put the car in drive. It initially engaged but then lost drive. Gave it a slight rev of the engine and with a thud, it came back in. Exactly the same in reverse and when I got it rolling, at very low speed, there was a fair bit of clunking. Once driving the car was perfect. I've even been back out a few hours later, once the car had cooled back down and it doesn't do it. Plugged it in and no fault codes either.

The car is a 2002 S8 with 161k.

Any ideas?
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Old 9th February 2015, 08:38 PM
Sir WIll Sir WIll is offline
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It does not sound that well to me that's for sure.

Old or low fluid would be my first guess, also a lot cheaper than a gearbox rebuild which could be due at 160k.
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Old 9th February 2015, 09:17 PM
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I've have had a slight leak from the gearbox - not enough to drip but it does smell and there is some wetness around it. There's a specilist local to me so I'm going to give them a call tomorrow.
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Old 9th February 2015, 09:22 PM
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Strongly recommend you get it to a ZF gearbox specialist - see sticky at head of this thread. Hope all is well.
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Old 9th February 2015, 09:31 PM
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There's a place local to me and he seems to know ZF boxes really well. I had my last S8 there for an overhaul and my B10 Aplina (which was a very similar box). I'll sound him out and report back.

Cheers.
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Old 9th February 2015, 09:31 PM
Sir WIll Sir WIll is offline
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Mackies
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Old 9th February 2015, 09:41 PM
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It's just a long long way. I'll see how I getbon tomorrow.
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Old 9th February 2015, 09:47 PM
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Good luck with the local diagnosis, hopefully it's nothing major.
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Old 10th February 2015, 09:44 AM
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Quote:
Originally Posted by tonyt102 View Post
There's a place local to me and he seems to know ZF boxes really well. I had my last S8 there for an overhaul and my B10 Aplina (which was a very similar box). I'll sound him out and report back.

Cheers.
Teddy at Easy Gears maybe?
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Old 10th February 2015, 11:41 AM
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Could be just low fluid. If the problem occurs when cold, but not when hot then there's a good chance.

The gearbox level is surprisingly intolerant of even a small amount missing...

Get it seen to asap by a gearbox specialist. ZF is ideal, but better any transmission specialist that a regular joe blog mechanic....
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