dc893

My car has suddenly started shifting through all the gears too quickly. It also will not automatically shift down when trying to accelerate. I can shift manually through all the gears. Anybody had this issue come up before?

I found one vacuum leak and that didn't help.

1992 LS400 about 300k miles

bgalarpe

First thing that came to mind was a bad tps...but start with checking transmission fluid level and condition next check for any engine and transmission codes. From there is could be a bad speed sensor or shift solenoids but find out if you have any codes and let us know.

timmy0tool

iTrader: (7)

first thing in my mind is bad ECU caps, but yes check fluid levels.