Sound German 150% Valve body




Just got a CL600 transmission and Sound German 150% valve body installed and was wondering if anyone else on here has one.








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The symptoms are:
Car runs and shifts ok till the car starts to heat up.
when trans mission is warm it will fall out of gear on occasion
after about 45 min to an hour of driving the car shifts VERY hard and is nearly undriveable.
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I tried calling you yesterday from your email. I have not heard back. I am available most of the time. 8-5 PST.




I tried calling you yesterday from your email. I have not heard back. I am available most of the time. 8-5 PST.
Thanks. Yesterday got hectic quick. Were you the call from WA? I don't think it is the valve body but thought you may have some insight. I don't believe the TCU is tuned at all. I have all the receipts from the PO and there is a dyno tune but no mention of anything done to the TCU. I haven't taken it back apart but they said that the fluid was full of clutch material again. I really shouldn't trust anything they say though. Ill see if I can find someone to loan me a tcu to try it out. I just ordered all new solenoids and conductor plate. When i do that i plan to do a sudo flush of the trans too.




I tried calling you yesterday from your email. I have not heard back. I am available most of the time. 8-5 PST.




I installed another used transmission and left the stock valve bnody in it. Drove about 500 miles with no issues. I then decided that I would tear down and clean the valve body then reinstall it. I took it all apart checked everything rebuilt it and installed it in the car with a new conductor plate tcc. all other solenoids are know good. First drive everything went well for about 1000 yards then the trans went to limp and would not work with manual or shift out of second gear. brought the car back check ed the fluid level topped off with half a ltr and reset the codes. Now the trans shifts but it is VERY hard in each gear. I am going to go back to the stock VB with the same conductor plate and solenoids. if this fixes the issue there is definitely something not right with the VB. Either way i think i am done i cant keep doing $100 dollar fluid changes to figure this out.




Sounds like a pressure control issue for sure but hit me up for any information. I am a transmission rebuilder by trade and have done many of these units.
Last edited by SICAMG; Nov 9, 2022 at 10:30 AM.




Sounds like a pressure control issue for sure but hit me up for any information. I am a transmission rebuilder by trade and have done many of these units.






