i have a 06 lincoln mark lt 4x4 and i was driving and all of sudden truck shut down and tranny failure lite came on . it starts up fine but wont go into gear but when you put it into reverse works fine its getting code p0720 any ideas im going try changing the oss sensor in little while but have feeling its not it any help thanks

 

i have a 06 lincoln mark lt 4x4 and i was driving and all of sudden truck shut down and tranny failure lite came on . it starts up fine but wont go into gear but when you put it into reverse works fine its getting code p0720 any ideas im going try changing the oss sensor in little while but have feeling its not it any help thanks

 

Did you check the fluid level?

 

ok so i changed oss sensor cleared codes and still did same thing no gears just reverse but i rescanned it got 2 different codes p0743 and p0755 and od light stays on and tranny malfunction light . then i checked fluid it seemed low i added a qt and lights went out and tranny moves little not much kind of rolls l but it didnt move at all before i cant tell if it needs more fluid its all over dipstick everytime i take it out and recheck it i will let it sit over nite let fluid in dip stick settle

 

ok so i changed oss sensor cleared codes and still did same thing no gears just reverse but i rescanned it got 2 different codes p0743 and p0755 and od light stays on and tranny malfunction light . then i checked fluid it seemed low i added a qt and lights went out and tranny moves little not much kind of rolls l but it didnt move at all before i cant tell if it needs more fluid its all over dipstick everytime i take it out and recheck it i will let it sit over nite let fluid in dip stick settle

 

Look underneath, if you don't have an apparent leak, then you aren't losing fluid. So now you may have 'overfilled' and will want to drain it now. Drop your pan and change the trans screen, maybe a plugged screen will cause this issue. If so, new screen PN: F6AZ-7A098-A. Either way, it sounds to have gone into a fail-safe status so something electronic is wrong.

http://www.obd-codes.com/p0743

http://engine-codes.com/p0755.html

 

Check the transmission oil with the truck running.

 

The fluid must be checked with the engine running and the tranny warm. It's not like the engine oil.

 

thats how i checked it. now think theres too much is there way to test solenoids

 

i think theres to much fluid wonder y it shut the lights off when i added fluid. is there away to test solenoids when i drop pan

 

No matter what the solenoids do or do not do the trans will still move forward. If it won't move then something mechanical broke inside the transmission. It's toast.