Changed the transmission fluid today and now it is slipping, the dip stick says 1/2 quart to much ????? it went into neut. Thanks to your forum because we found the mystery part in the pan and had no clue but because of all of you didnot wiast any more time

 

Welcome to the board, Howie!

Glad you found the solution to your problem!

 

thanks, I took 2000 f150 out for spin and I do not have over drive after draining the trans!!!

 

drove the truck today after draining the trans fluid and changed filter
used the walmart f brand (same as autozone) the dip stick says to use mercon, would using the cheaper brand cause this???

 

....can't explain why the tran would behave the way it is simply due to a fluid and filter change unless the old filter gasket was left in the intake port. If the old gasket is left in place, fluid circulation troubles arise.
(Of course we know for sure that a new gasket was used.)

I suppose you drained the torque converter.....not much sense in changing the fluid unless that is done.

Ford recommends Motorcraft Mercon fluid of course, but the 4R70W can live with any good brand of Mercon/Dexron III or better; Mercon V is highly recommended......or better yet, Chrysler ATF+4.

 

yes we did drain the torq and new filters put on, I even checked the old fluid make sure I did not miss anything. So I should go back to the mecron?????, I did turn off overdrive, but thinking not to drive till I change the fluid????