Oh great ones, I need assistance with this problem with my 91 accord. I just changed the speed sensor that's on the transmission, I can now see how fast I'm going, however, coincedently enough, now when decelerate my automatic transmission drops the gear, it nose dives and the tach borderlines the redline, so all I need to know is, what's happening to my ride, and how do I fix it?

 

Sounds like your due for a new tranny.......when was the fluid last changed? If you're not sure or don't remember then I recommend doing that. If it doesn't help the situation i'd look to get it replaced.

 

Did it happen after sensor replacement?
It can be an electrical problem related to your resent speed sensor replacement. You should check harnesses first. Make sure that pins are in the plug that goes to sensor. Pin(s) may be pushed out of a plug some times.