Transmision wines and slips 1st, 2nd, revers mybe drive

Do You do have reverse

Pull the trans & rebuild it

Can't fix slipping

Check the fluid, with the motor in park.

slave cyclinder needs bled or replaced

first did you check the oil it use atf fliud auto matic transmision fliud if it stil does the same you must take out the trns mision it has clutches in the inside that can be broken

I would check fluid condition and level. Wouldn't hurt to try and get it flushed and a no slip type additive added aswell . Lucas Oil products make a good one. However Ford transmissions in explorers are pretty common for failure.

It is a 5 speed manual transmission? If it is noisey in all gears except for 4th, then the problem is countershaft bearings.

NEVER I REPEAT NEVER USE ADDITIVES they damage before they fix. more than likely it is a transmision computer issue. or linkage. if its the trans again some thing is causing it.

Have you serviced the transmission latley? fluid, filter, band adjustment

Usually under heavy throttle causing the slip is caused by a seal in the pump leaking off hydraulic pressure letting the clutches slip.

Does it slip in all gears or just 1st.?
Does it slip in reverse?
The reason I ask this is because 1st and reverse use different fluid pathways,

also you can take it to a tranny shop and have them check the fluid pressure at the accumlator port to determine what the exact problem is,but my advice is to just drive it easy and make it last as long as you can,a new or rebuild tranny from a dealer would run 2500 or more.

there is a website www.car-part.com that you can use to find a replacement transmission

Make sure your power steering unit fluid is up to the full mark and no higher when hot, also a belt may be slipping.