Transmission Problem

[94turbo73]

My brother in law has a 94 ford explorer with 4x4 and a auto transmission. we put the new transmission in his truck with one from a boneyard known to work. except now he has all the gears except overdrive. it has a vacuum modulator. could it be a leak in that line or something else. any comments would help i will try to answer any questions to the best of my knowledge. i aint a tranny person. so, dumb down the question for me

 

[NJKen]

I dont remember what trans went in that truck but I dont think its electronic (totally). If it has a TV cable (downshift cable) Make sure its adjusted rite. Make sure that the vacuum line is hooked up and has vacuum! Start there and post your findings
Ken

 

[sassyrel]

as nj said---me thinks thats all elec tho--if so, one of the shift valves is probably stuck---

 

[94turbo73]

yah its both in my book becaue it has a vacuum line going to it. it also has electric solenoids on the inside too but only two of them. would the speedometer not being hooked up cause no overdrive. i adjusted the kickdown cable and it helped the normal shifting but no overdrive yet im gonna hook up the speedometer this weekend and see if it helps

 

[JLDickmon]

would the speedometer not being hooked up cause no overdrive.

it might.. they need to be at or above 45 mph (one of many criteria) for it to engage

 

[FORDMAN41291]

what the world would be like without Over Drive??? I had someone tell me once that it could might be the computer? or something in the Wireing Harness for the Tranny..