transmission slipp

[BTlilred]

My transmission slips constantly and it can't decide what gear it wants to be in. How do I fix it I'm tired of it

 

[txgocartB3000]

When was the last time you replaced the transmission fluid?

Have you tried using Lucas or Seafoam additives?

Did it just start doing this or has this been going on a long time?

Ray

 

[Dune Runner]

Probably needs a valve body. I had to put one in mine as it would miss shifts. I ordered one from Central Valve Body. Shifts like a new tranny now. There are known issues with the stock valve body. Ford even has a TSB on it.