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Discussion Starter · #1 ·
Well the bus honeymoon seems to be over...

Got the bus a few weeks ago and despite some misgivings over buying an auto went ahead, it seemed to drive nicely no juddering, or problems engaging gear, however i have noticed some juddering the last couple of times its been out.

It seems to judder/stutter not when on acceleration more when easing off or at a constant speed at certain revs.

Took it to a local autobox specialist who went for a drive and plugged it in. The following code 1192 was the result...

01192 - Torque Converter Lock-Up Clutch

01192 - Torque Converter Lock-Up Clutch: Mechanical Malfunction

Possible Symptoms
Torque Converter Lock-Up Clutch slipping

Possible Causes
Torque Converter Lock-Up Clutch faulty
Valve Body faulty
Internal Failure in Transmission

Possible Solutions
Check Torque Converter Lock-Up Clutch Slip

Special Notes
When found in 4-Speed Automatic Transmission (01M), check Measuring Value Block (MVB) 007.

(Taken from the Ross-Tech FAQ)

The garage seemed to think it was not worth doing much other than a rebuild, which of course is pricey, but i was wondering if it is worth getting an ATF change first as I guess when its all being changed they can tell more about the condition of the box.

I know it might be wasted money if a rebuild is needed, but does anyone have any input?

I know the atf has never been changed, the bus has done 120,000 miles and while its been looked after i understood it towed a caravan for a few years.

John R
 

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Discussion Starter · #4 ·
Well I actually had a box rebuild in the end, had a second opinion and they said exactly the same so I got it done.

I had it done locally and had an ATF cooler fitted at the same time.

I have an odd issue now, when it goes in top (only top) and between 1500-2200 revs 40-45+ mph it judders a bit but only when cold. It's most odd, but speaking to someone else this can sometimes happen, as increased ATF fluid takes a lot longer to warmup, although I don't yet know whether this is really the case,

I took it to the garage and we had one judder then nothing (of course I had driven it there so it had warmed up)! No fault codes nothing.

John
 
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