Jerking and Launching when cold
Changed tranny fluid
Change filter
Change gasket
Changed electrical connector thingy for trans
Check trans fluid level with that Mercedes metal stick thing
What I have noticed is that the car does not jerk or launch when changing gears, rather right when you take off... I have confirmed this by placing it in gear 1. I have also changed from S to C and it still does this when cold...rarely when warm.
Any ideas?
P.s. this is the most annoying thing about this car so if I can alleviate this situation, I will be forever grateful!
And does the torque converter work better once warmed? Cause the car works really well once the car warms up and running...shifts like butter!
I just don't want to throw tons of money at this car...I can do 90% of the work myself, but time is also an issue...
Anyone have a clue how much the diagnostics will cost?
My problems were only when cold, say below 50f. No codes.
I took the service manager's advice. Valve body internal screens were gunked up. Both the valve body and torque converter now have the latest sonnax updated parts. There were other things attended to such as bushings. All in it was under $2k.
Some people have claimed that something as simple as changing the conductor plate have cured the problem. Take an iterative approach, maybe you'll get lucky.
Be sure to report back!
PS here's a good article on the subject:
http://www.sonnax.com/tech_resources...shudder-part-1
My problems were only when cold, say below 50f. No codes.
I took the service manager's advice. Valve body internal screens were gunked up. Both the valve body and torque converter now have the latest sonnax updated parts. There were other things attended to such as bushings. All in it was under $2k.
Some people have claimed that something as simple as changing the conductor plate have cured the problem. Take an iterative approach, maybe you'll get lucky.
Be sure to report back!
PS here's a good article on the subject:
http://www.sonnax.com/tech_resources...shudder-part-1
Honestly, I just can't get myself to spend 2,000 on a car that is worth 6,000. Call me cheap, call me crazy, but I have a feeling I will be replacing this car in about 3-4 years anyways so I may just ride it out or warm up the car in the mornings...in the meantime, I may do the suspension parts being that the parts wont be more than $500.
Then again, the steering needs some TLC as well...ugh...maybe I should just sell it now and move on!
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Last edited by tjts1; Mar 1, 2019 at 10:14 AM.




I"m living with it, sadly.
-B
Honestly, I just can't get myself to spend 2,000 on a car that is worth 6,000. Call me cheap, call me crazy, but I have a feeling I will be replacing this car in about 3-4 years anyways so I may just ride it out or warm up the car in the mornings...in the meantime, I may do the suspension parts being that the parts wont be more than $500.
Then again, the steering needs some TLC as well...ugh...maybe I should just sell it now and move on!

I think you have the mechanical ability to do this. The Sonnax kit is not that expensive. You might also need more trans fluid. Then it is just having patience and getting after it. Have confidence, you can do it!




