Transmision i have a automatic 1999 ford ranger 2.5L 2wd with 180,000. the atf is brand new with filter and gasket at the right level. my problem is that when i put it in drive it feels like it dont engage fully and has no power. the same when i put it in reverse. i can shift it manualy from first to third,third being drive. but when it hits under 40mph it engages/slipps out and then i have to manualy drop it in 2nd until over 40mph. again its an automatic and no codes. thank you so much

That is a lot of miles on the tranny. Being a Ford it probably has the E4OD tranny. The E4OD has several clutch packs in side. Sounds as though your direct drive clutch pack has gone out. Also the torque converter has a lock up mechanisim in side which may have given up the ghost . This tranny has improved over the years from the origional version. But, this tranny needs frequent service if towing a heavy trailer. Once the fluid gets burned it needs to be changed immediately or problems will result if you let it go and try to change later. Just to purchase a rebuilt if it is a E4OD will be around $3400.00. If you want to rebuild it the parts cost for just a basic kit will be around $900.00 to do it correctly. There are many hard parts to check for tolerances internally. By hard parts I am referring to sun and planetary gears and what not. I hope this has helped. I have rebuilt many Ford trannys over the years and the E4OD can be problematic at times. The newer versions are more reliable.