![]() With the added performance the vibration is worse and unfortunitly I will have to address this sooner than later. Just to add a note I just finished up installing a new timing chain in and cleaning the EGR valve for the first time. I'm hoping that the S-S community can help me determine what is the root cause of this issue? This can not be standard or a lot more people would be posting about it. This job is not that difficult after doing it once however it is a bit of a pain to perform mainly because of the endless supply of trans fluid that seems to never stop attacking me as I lay in driveway! Former FoMoCo Auto Trans Engineer 1988-2007. If thats not it then it could be a short in the wiring to the torque converter control solenoid, or a bad solenoid, or a stuck valve, or leaking internal seals, or a bad pump. In total parts alone are around $450 with a discount. Check for low trans fluid or a loose/missing internal filter. Consisting of fluid, valve body, female plug, gasket, solenoid, lock pin, o-ring for male plug. I have used all OEM parts from the dealer. ![]() In my case it has gotten worse over time and as it progresses and you can even see the RPM fluctuating when you're feeling the vibration. If you notice the tachometer fluctuating randomly about 100 -200 RPM that this is most likely your culprit. If it is the TCC solenoid (torque converter clutch) watch the RPM when traviling down the highway. This led me to dive into the forms and I found someone else refering to the same issue and how to trouble shoot it. Once that did not fix it we realized that it was definitely in the transmission. The result is that that lock out solenoid (TCC) gets worn out much faster than every other solenoid in the transmission. The 722.6 locks the torque converter in every gear including first. We knew it was in the drivetrain so we started trouble shooting and replacing the driveshaft carrier bearing. The most likely failure point is the lockup torque converter solenoid. It is usually located between the engine's flexplate and the transmission. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. This all started with a vibration under light load between 1800-2200 RPM. A torque converter is a type of fluid coupling that transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load. ![]() The first one went in around 100K miles than the second around 150K ish. This will be the third TCC solenoid I have put in this since owning. The torque converter clutch solenoid valve controls the torque converter clutch control valve by TCM signal and adjusts engagement and disengagement. To start, I have successfully replaced two TCC solenoid (torque converter clutch) and it has resolved the problem both times. 2008 Sprinter Gen2 NCV3 w/ OM642 3.0L with 190K miles. ![]()
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