Jerking Tranny
02-08-2014, 08:34 PM
#26
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2005 E55, 2009 VW GLI
UPDATE- My car has been with the dealer for a few days. It just was not sitting right with me that my tranny is so jerky from 2nd to 1st. the updates they did worked for a few weeks but then again back to the jerk...1st time to the dealer they were unable to "replicate" the jerk and reset software and changed me $250. This time I told them keep the car overnight, and I will come by 7am when they open and sit with the SA and his Manager and "replicate" the prob for them. I went it and, was able to successfully replicate the issue. They agreed that it was not normal. Today I got a call from them saying that it is the Transmission Valve Body, and that it needs to be replaced..$1800 or so he said. Lets see if this fixes the issue. Will keep you guys posted.
O-55, Whats ur update bro? All Good?
O-55, Whats ur update bro? All Good?
-Oscar
02-11-2014, 03:02 AM
#27
Senior Member
When my car is cold, the shifting from 2-1 is sometimes rough in sport mode. Comfort mode is ok. I've had the dealer troubleshoot but they could never replicate.
The 2-1 shift harshness is more noticeable when driving like an old lady. When driven aggressive, it shifts smoother. Not sure if the car is thinking "Hey I'm in sport mode, the driver is going to drive aggressive" and the initially 2-1 shifts are rough but then smooth out once the car learns that you're driving like an old lady. My SA also mentioned the possibility of the valve body but didn't mention it going bad.
The 2-1 shift harshness is more noticeable when driving like an old lady. When driven aggressive, it shifts smoother. Not sure if the car is thinking "Hey I'm in sport mode, the driver is going to drive aggressive" and the initially 2-1 shifts are rough but then smooth out once the car learns that you're driving like an old lady. My SA also mentioned the possibility of the valve body but didn't mention it going bad.
02-12-2014, 08:09 AM
#29
Super Member
Update.
I got the car back last night after 6 days, (Damn I missed it) so the dealership replaced the valve body, and did a complete transmission flush. (it was done on schedule at 40k and now at 61k. Car feels awesome now. No jerk from 2 to 1, buttery smooth!! Finally! Drove about 50 miles last night from grandma driving to burning rubber, transmission took everything I threw at it no issues.
I got the car back last night after 6 days, (Damn I missed it) so the dealership replaced the valve body, and did a complete transmission flush. (it was done on schedule at 40k and now at 61k. Car feels awesome now. No jerk from 2 to 1, buttery smooth!! Finally! Drove about 50 miles last night from grandma driving to burning rubber, transmission took everything I threw at it no issues.
02-12-2014, 08:27 AM
#30
Junior Member
Update.
I got the car back last night after 6 days, (Damn I missed it) so the dealership replaced the valve body, and did a complete transmission flush. (it was done on schedule at 40k and now at 61k. Car feels awesome now. No jerk from 2 to 1, buttery smooth!! Finally! Drove about 50 miles last night from grandma driving to burning rubber, transmission took everything I threw at it no issues.
I got the car back last night after 6 days, (Damn I missed it) so the dealership replaced the valve body, and did a complete transmission flush. (it was done on schedule at 40k and now at 61k. Car feels awesome now. No jerk from 2 to 1, buttery smooth!! Finally! Drove about 50 miles last night from grandma driving to burning rubber, transmission took everything I threw at it no issues.
mine has oil leak from tranmission, and dealer says that because of oil preessure loss this may happen too.
I'll wait and see
ps: nearly same kms
mine was done at 50k now it's 65k
02-12-2014, 10:01 AM
#31
Super Member
02-13-2014, 01:58 AM
#32
Senior Member
... It just was not sitting right with me that my tranny is so jerky from 2nd to 1st. ... This time I told them keep the car overnight, and I will come by 7am when they open and sit with the SA and his Manager and "replicate" the prob for them. I went it and, was able to successfully replicate the issue. They agreed that it was not normal. Today I got a call from them saying that it is the Transmission Valve Body, and that it needs to be replaced..$1800 or so he said. Lets see if this fixes the issue. ...
... so the dealership replaced the valve body, and did a complete transmission flush. ... Car feels awesome now. No jerk from 2 to 1, buttery smooth!! Finally! Drove about 50 miles last night from grandma driving to burning rubber, transmission took everything I threw at it no issues.
"Since I had the Valve Body out, I went ahead and replaced the Regulator Pressure Control Valve Spring (another common failing part.. causing ROUGH shift from 1->2 and 2->3)."
"The spring is underneath THIS Cap."
"Measure the Spring, for a length of 2.055" or greater.. to make sure you haven't 'lost' a piece of coil floating around in the valve body. The springs are known to break."
"Pressure Regulator Spring (Yes, those Idiots at MB change out the WHOLE Valve body, rather than the stupid $8 spring-- thus, NO MB number) Sonnax 68942-01 You should be able to get it at your local Transmission Supply house."
(I didn't have this rough shift problem, so I didn't open my valve body.)
02-14-2014, 08:09 AM
#33
Super Member
Dang I don't know if they changed the spring or the conductor plate. Just the valve body and complete transmission service.
From what I am gathering there all separate and not part of VB?
From what I am gathering there all separate and not part of VB?
02-15-2014, 12:15 AM
#34
Senior Member
02-25-2014, 07:14 PM
#35
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2005 E55, 2009 VW GLI
A bit of an update to report. I was originally going to reassemble everything with the new conductor plate, but I went ahead and reused my old conductor plate with the new TC solenoid in order to provide more accurate results.
Result: The jerk/buck no longer exists. I was not able to log many miles at first because my supercharger went **** up shortly after the repair. I replaced the supercharger this past weekend and then drove around in the car quite a bit. The harsh shift from first to second gear is no longer there. What I have now is the symptom FinanceMike expressed earlier in this thread (the awkward RPM drop while still in gear right before a gear change), except I have it when changing from first to second and second to third. I believe it is due to poor signal strength between the conductor plate and solenoids, but I cannot be certain at this point.
I plan on wrapping up this saga Sunday morning. I'll report back after replacing the conductor plate and logging more miles.
Also, to those who think their tune is the culprit, my symptoms occurred when my car was stock and continued after the car was tuned (ECU and TCU). Torque converter replacement did not yield any improvement either.
-Oscar
Result: The jerk/buck no longer exists. I was not able to log many miles at first because my supercharger went **** up shortly after the repair. I replaced the supercharger this past weekend and then drove around in the car quite a bit. The harsh shift from first to second gear is no longer there. What I have now is the symptom FinanceMike expressed earlier in this thread (the awkward RPM drop while still in gear right before a gear change), except I have it when changing from first to second and second to third. I believe it is due to poor signal strength between the conductor plate and solenoids, but I cannot be certain at this point.
I plan on wrapping up this saga Sunday morning. I'll report back after replacing the conductor plate and logging more miles.
Also, to those who think their tune is the culprit, my symptoms occurred when my car was stock and continued after the car was tuned (ECU and TCU). Torque converter replacement did not yield any improvement either.
-Oscar
03-27-2014, 12:09 AM
#37
03-27-2014, 09:25 AM
#38
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E-ZGO 53hp., 1999 E 430 sport, 2004 E 55, 2008 Tahoe LTZ on 24"s
I'm not sure if G-AMG at BenzWorld was talking about the same problem, but while I was replacing my Conductor Plate recently and referring to his excellent http://www.benzworld.org/forums/w210...tor-plate.html, I noticed these quotes that may be related:
"Since I had the Valve Body out, I went ahead and replaced the Regulator Pressure Control Valve Spring (another common failing part.. causing ROUGH shift from 1->2 and 2->3)."
"The spring is underneath THIS Cap."
"Measure the Spring, for a length of 2.055" or greater.. to make sure you haven't 'lost' a piece of coil floating around in the valve body. The springs are known to break."
"Pressure Regulator Spring (Yes, those Idiots at MB change out the WHOLE Valve body, rather than the stupid $8 spring-- thus, NO MB number) Sonnax 68942-01 You should be able to get it at your local Transmission Supply house."
(I didn't have this rough shift problem, so I didn't open my valve body.)
"Since I had the Valve Body out, I went ahead and replaced the Regulator Pressure Control Valve Spring (another common failing part.. causing ROUGH shift from 1->2 and 2->3)."
"The spring is underneath THIS Cap."
"Measure the Spring, for a length of 2.055" or greater.. to make sure you haven't 'lost' a piece of coil floating around in the valve body. The springs are known to break."
"Pressure Regulator Spring (Yes, those Idiots at MB change out the WHOLE Valve body, rather than the stupid $8 spring-- thus, NO MB number) Sonnax 68942-01 You should be able to get it at your local Transmission Supply house."
(I didn't have this rough shift problem, so I didn't open my valve body.)
