Clk 200 Kompressor W208 Second hand transmission

Arudge

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I've been trawling Ebay for a second hand transmission, I havn't found much for the 200 Kompressor but there's plenty for the 230 Kompressor.

Is the 230 Kompressor transmission suitable for mine?

Many thanks.
 

Merc Vern

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I've got some 230 auto boxes if you need one.
 
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Arudge

Arudge

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I might have some lying around under the stairs as well :)

Lying under the stairs?? As a kid at home i had a mini gearbox in my wardrobe once, which didn't go down with mother too well, but there you go.
 
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Arudge

Arudge

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My gearbox is a 722.616. Which took a bit of finding out. I used one of those online VIN checkers and cross referenced that with other online references. It appears the the CLK 200 does share its box with the 230 along with the the C200 and the E200, there may be others, but i've been searching so long i now have brain matter dribbling out of my ears.
 
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Arudge

Arudge

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I'd like to take up the offer. It's more a case of who's the closest to B64 so i can collect or whose going to Malcolm's. Please PM me to discuss price and any known issues.

Many thanks.
 

LostKiwi

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You're becoming a real expert on these cars Andy!
I had thought the gearbox could be the same and the ECU provide the variation for the different shift patterns but had been unable to verify (lack of time over the past few days). Glad you found it all out!
 
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Arudge

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Sorry, I wasn't suggesting anybody drive to Malcolm s with a transmission rolling around their boot! No idea what i was thinking!
 

John Laidlaw

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Sorry, I wasn't suggesting anybody drive to Malcolm s with a transmission rolling around their boot! No idea what i was thinking!
Yeah, for goodness sakes, they should put it in a wardrobe first !:p
 
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Arudge

Arudge

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You're becoming a real expert on these cars Andy!
I had thought the gearbox could be the same and the ECU provide the variation for the different shift patterns but had been unable to verify (lack of time over the past few days). Glad you found it all out!

I had no intention of becoming an expert in anything, it's just the way it turned out, you know how it is. I just can't put it down, the times the missis has kicked me in the shins and shouted 'BED, NOW!!' And she wasn't feeling frisky either :(.

I was hoping the variants would be in the TCU and overall ratios taken care of by the diff, but that aside i found 25 variants of the 722.6 but i've yet to find out what they actually are. I know some have single sided friction plates and others are double sided for increased torque capacity. I'm sure other details will emerge as we go along.

I know you have your hands full at the mo and there's always something going on my end, but wouldn't life be dull without it!!
 

Merc Vern

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I've got a car with a box in, vin WDB2083472F132276, If thats any good £75.00 won't be able to get it out until next week.
 
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Arudge

Arudge

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I've got a car with a box in, vin WDB2083472F132276, If thats any good £75.00 won't be able to get it out until next week.
Where roughly in the world are you Vern?
 
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Arudge

Arudge

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Winchester ish, Hants
I haven't forgotten you Vern, waiting for a clearer diagnosis on mine, and you are 2 1/2 hours away.

Sounds like your breaking the car, are there any known issues with the box at all?
 

Merc Vern

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I haven't forgotten you Vern, waiting for a clearer diagnosis on mine, and you are 2 1/2 hours away.

Sounds like your breaking the car, are there any known issues with the box at all?
The car came to me with a misfire, its got low compression on number 4. I drove the car and the box was okay.
 
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Arudge

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Well, the lost Kiwi bailed me out again and plugged my car into STAR on a very soggy Friday night. There were some minor issues, some codes that my Carsoft didn't find, but more importantly, no codes that appertained the the gearbox.

Bugger.

But i had been doing some homework, and found that the TCU can compensate for wear in both the clutch packs and the brake packs. The TCU can pre fill the clutch and brake pack at a filling pressure, before actually actuating each with the full pressure, which executes the gear change. It actually measures the time in milliseconds it takes to take up the slack, and stores that value. Clever stuff.

These compensation values are a bit like fuel trims, and with STAR we can see the stored values and reset them if we wish.

The values in the lower gears, where i was having problems, were so way off the mark it suggested the clutch packs were absolutely knackered. We reset them thinking lets see what happens.

We went out for a test drive and the car drove well. This can't be right.....We'll give it a few days.....
 
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Arudge

Arudge

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A few days later.....

The car continues to drive well and I've been reflecting on what we have done.

When I first changed the ATF last year, when i first had the car, it was almost black and noticeably heavier. It could have been the wrong ATF or just heavily contaminated with friction material and/or burnt. Either way it was thicker. The stuff I put in was like water but it was the real deal so in in went. And a complete fresh fill again when we changed the torque converter.

I've been thinking.....

Thicker fluid would affect the fill time on the clutch packs, and therefor the fill time compensation. Could it be that the TCU compensated for the thicker ATF and could not trim back as fuel trims do? And therefore an ATF change should be followed by a compensation reset as a matter of course?

But something is wrong.

The TCU in my car is not original. Mine died a few weeks ago and was replaced by an EBay job. The car drove exactly the same with either TCU so i thought nothing of it.

But on reflection, the replacement TCU must have had very similar compensation numbers or, that data is not stored on the TCU, but that wouldn't make sense, where else could it be stored?

Or could it be that this is what happens on these 'sealed for life' transmissions? When we get to the 100k mark and strange things start to happen because the ATF is full of rubbish, and the TCU has tried but failed to compensate. We do an ATF change but were still stuck with the old adaptive figures, which we, of course, have just reset on mine.

The other point is that having reset the compensation, you'd expect the transmission to be a little rough until it trims to where it needs to be. But it wasn't rough at all, suggesting the clutch and brake packs may well be in good shape after all.

The run to Malcolm's will be the acid test, we can re check the adaptive values again and see what we have.

Food for thought.
 


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