honda accord lx 1992 okay the d4 light is on and my brother took it to his work shop and they say i need a new speed sensor on the tranmission. he also say it will drive in the fourth gear but it acts slow for it to hit the fourth gear. so will a new speed sensor fix this problem. what excatly do a speed sensor do. is it for the tranmission.

 

is your speedo working?


speed sensor tells the tcu when to apply lockup........

 

yes it works

 

or do i need a shift soleniod