When decending Pikes Peak in our 2000 V6 4X4 Ford Explorer, the transmission would slow the vehicle slightly in Dr 2 but NOT at all in Dr 1 resulting in overheating brakes.

IS THIS NORMAL?

 

No, it is not normal. Here is a paste from another site that details what is wrong:

"Hello All!
Just got my truck back Friday from the dealer and I thought I'd post the part #'s of the revised transmission gaskets for those who have problems with the 5R55E not staying in first gear when the selector is placed in the 1 position.

F5TZ-7C155-A Gasket - Trans Vlv Body Sep Plt
D4ZZ-7L173-A Gasket Trans Rev Srvo Sep Plt
F5TZ-7A191-A Gasket Asy Trans Oil Pan

Also, the Cause on my invoice lists this:
Verified Concern, diagnosed. Removed pan, Valve Body and Low, Reverse servo. Replaced gaskets and reinstalled all components. Test Drove.

Hope this helps any and all with a similar problem. Now dropping the truck into 1 will shift into 1st at about 20 MPH and stay there!!!! YAY!!!!

Please check your transmission's operation of the 1 position, as this is a very important safety issue. "

 

Thanks for the reply....do you know if this is covered under the
warranty?

Thanks

 

Yes, it is covered under the bumper to bumper warranty. If you are referring to an extended warranty then you will have to check your paperwork since all extended warranties vary from company to company.

 

 

Thanks!