Transmission oil and shift quality

[innocent2k]

Originally Posted by manur

Hey,

I just stumbled upon your forum thread about the TF71-SC automatic transmission, and the oil change.

I have a c4 grand picasso with the same automatic transmission. and similar problems.
- Irratic quality of shifting (especially downshifting)
- Sometimes delayed start/takeoff with a jerk
- in general a feeling of a bad driving quality


I would like to ask if these problems are still "solved" and didnt come back in the end?

Did you already own the car before the first (bad) oil change of the transmission? was the ****ing before this oil change good or not?

Thanks in advance
Manu

I don't think I picked up on any irregular gear shifts before the first oil change. But I'm happy to report that after getting the proper oil transmission still shifts smoothly. I do have some jerks left, but it turned out I was barking up the wrong tree for the remaining shudders. Sometimes lower gear shifts can feel very rough, but that is actually not the transmission, it's engine misfires.

I had the car over at a transmission specialist again, and they test drove it and did indeed pick up on what I was feeling and told me that they thought it felt like misfires... they were absolutely right. Unfortunately not found the reason yet. Excluded plugs, coils, HPFP so far, and as far as I can tell there are no vacuum leaks either.

[manur]

Originally Posted by innocent2k

I don't think I picked up on any irregular gear shifts before the first oil change. But I'm happy to report that after getting the proper oil transmission still shifts smoothly. I do have some jerks left, but it turned out I was barking up the wrong tree for the remaining shudders. Sometimes lower gear shifts can feel very rough, but that is actually not the transmission, it's engine misfires.

I had the car over at a transmission specialist again, and they test drove it and did indeed pick up on what I was feeling and told me that they thought it felt like misfires... they were absolutely right. Unfortunately not found the reason yet. Excluded plugs, coils, HPFP so far, and as far as I can tell there are no vacuum leaks either.

Thank you for the reply.
It's very nice to get a confirmation after one year that this makes a lasting result.