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2018 GLC300 4matic
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40 Posts
Discussion Starter · #1 ·
I have a 2000 C2230. The trans shifts nice and smooth going up
thru the gears but "clunks" when down shifting. Any ideas would be appreciated.
Thanks
 

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96' C220
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1,275 Posts
I'll take a stab...

I'm going to go ahead and guess you have a bad Motor Mount on one side. You may be feeling the engine thumping during downshifts.

Other than that, you should do a Tranny reset procedure since you have the Electronic 722.6 box.

Good Luck!:thumbsup:

C as in 220
 

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1995 C220 102k
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588 Posts
It clunks when downshifting?? Funny, I had that exact problem! My trans had taken to acting like it was complete junk, I mean really bad. I thought I was going to need some major overhaul of the trans......I just fixed it by replacing my front FlexDisc on the drive shaft - mine was bad -- when it goes bad the trans tends to shift prematurely and clunk when you downshift. Check out your driveshaft flexdiscs!
 
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