Dear @Xulfiqar,
My 2005 Honda City Vario starts vibrating and RPM drops when I put in 'R' mode. Sometimes when I put in 'R' mode keeping brake pedal pressed, it seems as if transmission is engaged forcing the vehicle to move at first but keeping the brake pedal pressed it gets released and vibration goes off. As soon as I release the brake pedal, it gets moving normally. RPM changes a little bit sometimes when I put it in 'D' but that it very nominal. (There is no issue with the pickup or any kind of noise in transmission or shifting. It drives perfect on both modes of D and R)
Last time it got better when I changed the Automatic Transmission Fluid.
Can you please guide me what can be wrong in this case.
Thanks
Sohaib