Have a problem with the downshifting.when the rpm drop there's a roaring sound. This happen on the highway. When ever it drops from 65 mph to 50 mph.:confused:

Automatic transmissions are very problematic these days. The only protection the average motorist can get is provided by good preventive maintenance. Every 30,000 miles, drop and clean the pan, change the filter, and replace the ATF. Changing the fluid in the torque converter is an additional plus. I found downshift problems on my 2000 Taurus, with the 3.0L Duratec engine and AX4N transmission, were cured when I replaced regular Mercon V with Amsoil Universal Synthetic ATF. I did this at 29,000 miles. Mobil 1 Synthetic Multi-Vehicle ATF would be just as good and meets Fords Mercon V specifications.

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Originally Posted by leroy1723

have a problem with the downshifting.when the rpm drop there's a roaring sound. this happen on the highway. when ever it drops from 65 mph to 50 mph.:confused:

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I had ford change the filte and relace the atf fluid . It a seal trans , so they are the only ones that can do it . Do u think it could be a val cover problem are a computer problem ? This same problem has happen with other onwer's, They have had this same problem with ford 's downshifting problem too . A lot of them have had a patch install to correct the problem, for some it work and for others it didn't work.

Have you taken a scan tool and checked for any ATX codes? Have you checked for any TSBs on this situation?

No, I don't have a scan tool. I have been waiting three weeks for on. The " mack tool guy has it on back order .

Hi, Tx. Today I used a scan tool and checked for ATX CODES. The scan show no problems found. Where do I go from here ?

Check for any TSBs and try the synthetic ATF I recommended. Other than that, you need to find someone who's very familiar with that transmission, who can advise you what to do.