Submitted by Ruben1 on Sun, 06/12/2016 - 08:45

Hello everyone, first post here.
I have a 1994 XJS 5 speed (factory) which is giving me this problem....when I accelerate under any gear when the engine reaches around 3200 RPM the car begins to shake and the car stops accelerating almost as if power was cut off and it will do this until I shift up to the next gear then all is normal until I get to around 3200 RPM again and the cycle repeats itself.
Other than this everything else runs normal.
Also worth mention that the check engine light came on with an FF23 code (O2 sensor).
Any opinions on what can possibly cause the car to behave this way? Any and all opinions are welcomed.

Submitted by Ruben1 on Sun, 06/12/2016 - 14:36

I am not familiar enough, yet, to do my own work so no I have not checked these two items mentioned. I will take it somewhere appropriate but in the mean time I was very interested in hearing from others whom may have experienced something similar and can lend an opinion.
Thank you for the reply.