The transmission shifts kind of hard at 25 mph,then will not shift out of 2nd until 55-60 mph.What could be causing this ?

Auto Trans not shifting correctly from 2nd to 3rd - Ford Explorer ...

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May 8, 2004 - 19 posts - ‎9 authors
Auto Trans not shifting correctly from 2nd to 3rd Under the Hood. ... Become an EliteExplorer. Lithuania. 1999 5.0. Join Date: Jun 2003. Posts: 107 ... When this happens, the transmission will skip to the next gear like you said.

Transmission Harsh shifting - YouTube

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... Doctor, explores the causes of harsh shifting in automatic transmissions. ... Early diagnosis is important to ...

Hard Tranny Shift between 2nd & 3rd - Ford Truck Enthusiasts Forums

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Feb 24, 2012 - Hard Tranny Shift between 2nd & 3rd Super Duty & Heavy Duty. ... I just got a new to me 99 f250 5.4 V8 SD XLT 4x4 Auto Trans longbox 118k miles. ... it out and said it was solid except for a hard shift between 2nd and 3rd gears. ..... Hard shift between 2nd and 3rd, Brenda Lamka, Explorer, Sport Trac, ... hard shift 2nd to third gear only 4r100
Dec 26, 2012
hard shift into 3rd
Nov 4, 2009
4r55e 5r55e Ranger / Explorer Transmission Problems - CLICK ...
Mar 15, 2007
00 Expedition trans shifts late and hard

You don't give me much information to work with. However, 1st, look at the engine mounts. You may have a broken mount. This will make it feel like the transmission is shifting hard. Other than that, there is only a few things that will cause this. The speed sensor tells the computer when to shift the shift solenoids. It may not be "seeing" a quality signal. If this is the case, the speedometer will be bouncing too. Last idea is that it is skipping a gear. Starts in 1st, should go to 2nd at about 10 MPH. 3rd at 25 to 30 MPH. And, if you have a Overdrive transmission, it should go into overdrive at around 45 to 55 MPH. If it is skipping 2nd, it will engage 3rd at a high engine speed, and will feel like a sudden slam into gear. If this is true, your transmission needs some work. Hope this all helps. Good Luck.

Remove the battery cable & see if it will relearn the shift points

I doubt a 1992 even has that capability,you may have a failed trans

your transmission moulder may be bad it tells the trans when to sift and how to shift. how many miles are on the car. after so long they go out and need replacing

Faulty shift control solenoid.

Think about it--- because all you can do- is remove &
clean the valve body

After that- it comes out for a rebuild

Back probe the TPS Sensor & see what that looks like

You remove and clean the valve body

No luck,you rebuild the unit

I used to own a trans shop

The 240sx auto transmission will not shift from 1st to 2nd until going about 25 mph with gentle throttle (35mph with full throttle). I do not recall what engine RPM this corresponds to, but i know it always seemed high.

As for the hard shift two second, there is rectangular module that is inside the driver side fender next to the ignition coil that is sometimes unplugged to get a more "sporty" feel out of the automatic transmission. Check that plug and if it is unplugged, plug it back in.

Sounds like you may have accidentally removed the vacuum line to the modulator valve on the back of the transmission. (worst case, the headers may have burned through the hose, but either way, this is more than likely the problem.
Hope this helps
Chris.

Yes you need to have it adjusted.