I replaced the four solinoidesin my 99ford Explorer transmission it worked for a day there are a couple more what they do should I replace them it moves at high rpmx

very easy just go to reliable-store it has all manuals
there many other websites also but in this matter this website is too good

Just by process of elimination you have a fault in the wiring harness to the transmission.

There isn't an overdrive relay. There is an overdrive solenoid. It takes about four hours to replace. You better have manuals and patience to do it. otherwise you will mess up the transmission worse than it is already..I really don't recommend a nice to do it. When you take it apart, there are parts that fall out. You lose them or don't get them back in place, a transmission rebuild ,plus extra parts are in the works for you.

Linkage could be bent or jammed. Chock wheels, disconnect linkage and see if it shifts at transmission by hand. check linkage for damage

Transmissions can be rebuilt. No need for a new one.

check transmission fluid level! warm it up and run it through all the different positions from park to first... do this a couple of times... check the level now in park while running! if low add half bottles of tranny fluid at a time "dont" over fill it. now repeat the selection process again in all different positions. if the level is good... then you may have to take it to a shop and have it looked at.

Have you checked the fuel filter recently? It should be changed every 20k miles or so. It is very cheap to replace if you have the disconnect tool for the lines. Also try an injector cleaner that you put inside your tank. This should rectify the problem. Hope this helps. Let me know. Good luck. Thanks for using FIX-YA. P.S. if you had a code for the o2 sensors then I would have directed you to replace them.

Start by checingthe swich.If the motor makes noise when trying to pull the window up The swich maybe OK. The means that some thing is wrong w/ the rails on wich the Glass travels .You may have to take the door apart to see were the optruction is.

what about transmission kick down?kick down also is your ignition timing have a vacuum advance or is it electronic????? sounds like a timing issue I remember the old days car always hesitated cause of timing not set!!!or out a couple degrees good luck,

sounds like the tranny pump is going bad or bad band in drive trane