in quest hunting rough vibration, i changed all 4 absorber and its mount. both lower arm. both absorber link. since my idle is perfect at recommended rpm, i didn't suspect O2 sensor. finally, i change my motor mount set. but, the vibration still noticeable, very noticeable, reduce slightly after motor mount. i ask my foreman to scan wit my ecu, it show FAULT at transmission title. and when open it to see details, it show, i guess, over 20 fault, maybe all faults available in transmission area. but my transmission shift all gears. no problem. then i ask him to clear those codes, the tool can't remove it. fail to communicate. is it short somewhere? TCM problem?
Ahhh, what car is this? failure to communicate with the transmission control module doesn't exactly equal to vibration. I would be under the assumption that your car actually has two different problems because correlation does not always equal causation. If you have the car off and assuming you can get under it, is there any noticable play in any of the joints. You've changed a couple, could have been just slow degradation. But go down the line anyway before you shotgun more parts. I get that there are a multitude of transmission errors and I'm assuming one of the codes you are getting is U0101. In that case check to see while under the car for wiring and the TCM itself. If everything checks out, Afterwards be sure your battery is up to par as some newer cars are very particular about their battery voltage. Anyways, hard to say anything without proper inspection or codes for that matter, be sure to also check out the TSB's for your car as there at be others with your issues that may have them resolved. Also also, maybe stupid but make sure that all previous work is tightened up, you'd be surprised on what people can miss sometimes...
@bruceree
no surprised. indeed my absorber not properly installed. luckily i found it before it came off. already contact another workshop, explained, he asked me to bring the car. seem he confident can do it. from the troubleshooting manual, i got COMMUNICATION BUS A OFF. need to start checking it's connection first. it's nissan almera here in Malaysia. thanks for ur reply..