with the od engaged the tranny feels like it slips and the engine races shifts fine when the od is off, its been that way for awhile...what can I do ? Is it electrical it started when I had 45 thousand on it. I have a 2004 with the new body style and has the small v-8....would appreciate if I can find out the problem on this site....just signed up the other day...owned nothing but fords.

 

what RPM does it feel like it's "slipping"??? I keep OD off unless I'm traveling over 50mph or planning on stomping it

 

when I hit about 30 to 35 miles an hr and 2000rpm then its feels like it slips then the motor races to about 3000rpm and when I take it out of od it's fine.

 

so is it throwing any codes??

and is the torque converter and trans full of fluid??

 

no codes and the fluid level good