Transmission problem with 2000 Ford Crown Victoria?

Have to replace.

I would say that if you have never changed the fluid, I would bring it to a shop that has a flush machine and have the fluid flushed and the filter changed. Make sure the proper fluid (Mercon V) is used. The 4R70W auto is a stout transmission so it probably needs a little maintenance and hopefully will be fine. You might want to check the fluid level at operating temperature because low fluid will cause this problem as well.

If all it is doing is slipping you should be able to repair it. If you have experience with transmission repair. more than likely it is an internal problem.... you may want to consult a transmission shop before it will have to be replaced.

put in some lucas tranmission fluid. i put some in 1987 honda accord 340K miles with a slipping tranny. after i put the lucas in, the tranny stop slippin and fines fine. u can get it at auto parts store.

but still get it checked out...

change the trans fluid and filter and then add lucas transmission fixer and I can almost gurantee it will be ok.

take it to a mechanic