big jerk when selecting D at cold start

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Alexetto72

New Member
Joined
Jan 1, 2020
Messages
19
Location
Morocco
Car
C250cdi 2010
W204 250cdi 2010 with 722.6 transmission recently serviced with Fuchs 4134
If I leave engine idle untill 40 or 50 degrees there's no problem
But if at select D at cold start the whole car blench
Anyone experienced this
 
When you did the service , did you check the gearbox oil level when the oil is hot (80 degrees) with the engine running and the gearbox in Park , on a level surface .
 
I presume that your foot is firmly on the foot brake when moving the selector to "D"? You need to get a OBD scan done on it, and see if it shows any faults. That's the quickest way to get it sorted, I think.
 
I presume that your foot is firmly on the foot brake when moving the selector to "D"? You need to get a OBD scan done on it, and see if it shows any faults. That's the quickest way to get it sorted, I think.
Yes. And scan didn’t show anything
 
Are you parked on any kind of hill?
Mine is quite a clunk going to D but I am on a hill and its the gearbox moving from its P locked position to Drive. Not sure if it is good for the car but I don't have much choice, the foot brake doesn't hold the car well enough to prevent it happening.
 
Hi,
What's the Idle speed of the engine when you selecting D?
Is it perfect when the engine is up to temperature?
If perfect when up to temperature what is the idle speed?
Are you absolutely sure the GB Oil level is correct?
 
Hi,
What's the Idle speed of the engine when you selecting D?
Is it perfect when the engine is up to temperature?
If perfect when up to temperature what is the idle speed?
Are you absolutely sure the GB Oil level is correct?
Idle speed is normal about 800r/mn at cold start and when up to temp.
 
Are you parked on any kind of hill?
Mine is quite a clunk going to D but I am on a hill and its the gearbox moving from its P locked position to Drive. Not sure if it is good for the car but I don't have much choice, the foot brake doesn't hold the car well enough to prevent it happening.
No it’s always parked strait in garage. I’m vey worried because my previous C220cdi had exact same problem that finished by excessive slipping and transmission swap.
 
Hi Tonygw , I am having same problem with my c class 2.1 cdi 2010 . There's no light on dashboard. Did you find any solution at all?
Regards
Demir81
 
Hi Tonygw , I am having same problem with my c class 2.1 cdi 2010 . There's no light on dashboard. Did you find any solution at all?
Regards
Demir81
You need the fault codes read , ideally by an MB specialist on the Star computer system . Anything else is guesswork
 
Have you the brake pedal really firmly pressed? Just resting your foot on it is not enough. My first E class ( 2010 w212 ) used to clunk or jerk when moving from P to D unless the brake pedal was really pressed down hard.
 
Hi Justin,
It only happens when the car cold or in the morning, if I wait 8-10 minutes the engine on and then when I put it into gear "D" or "R" its jerks a bit but be able to drive then no problem all day long ..
 
I had Lurch/thump 2nd to 3rd when the car was cold, After new Conductor plate shift valves etc turned out to be the TCC solenoid, SMOOTH as silk now.
 
I am going to take local garage tomorrow so hopefully I'll find out whats the issue. As you said it looks like Torque
 
By now maybe you have it sorted, and I hope that all is well again. I was thinking about what you said that it's only when its cold when it happens..let it run a few mins, and its fine, and stays fine throughout the day. Only difference that I can see is that the ATF level is seriously affected by temperature..and in that transmission, level is all important. There is a specific temp to check the level at, and higher or lower, will affect its performance. Just a thought,
 
By now maybe you have it sorted, and I hope that all is well again. I was thinking about what you said that it's only when its cold when it happens..let it run a few mins, and its fine, and stays fine throughout the day. Only difference that I can see is that the ATF level is seriously affected by temperature..and in that transmission, level is all important. There is a specific temp to check the level at, and higher or lower, will affect its performance. Just a thought,
Thanks for your time to reply 👍
I have been to automatic transmission specialist near me to day & I have explained to him what's happening. He said it looks like Torque converter, but he needs to do more investigation with it. Booked him next Wednesday so I'll let you guys know.
 

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