1991 Explorer not moving very well

Tiny
BIGNICK
  • MEMBER
  • 1991 FORD EXPLORER
I have a 1991 Ford Explorer xl 4x4, 225,000 miles, 4.0l engine automatic transmission. Today I exited off the interstate and when I tried to accelerate from the stoplight, the rpm's revved to about 4500 but the truck was crawling at about 5 mph. I stopped, put it in park and checked the fluid level, which read about an inch above the full mark. When I put it back in drive, it engaged and drove normally. I parked it downtown at a meter, and when I returned it started doing the same thing. I decided to move it to a better location so it wouldn't be towed, so I put it all the way in 1st and got it up to about 12 mph by revving it up hard. Two blocks later I let off the gas to slow for a parking lot and it went into first. I got it out of downtown in 1st and when I got near a neighborhood where it wouldn't be towed I tried to put it into D, where it started to drive normally, no shifting problems, nothing. I live about 15 miles outside town so when I got home, I put it into reverse to back into my driveway and it engaged normally, however when I got it in and tried to put it into drive it wouldnt go in again. I would like to note I haven't added any fluid recently, so I know I didn't overfill it on fluid, why does it read so high on the dipstick? The fluid is a normal red color, no debris in it, not burned, nothing. I am baffled, can you help?
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Saturday, April 14th, 2007 AT 8:37 PM

4 Replies

Tiny
NKTIDWEL
  • MEMBER
Youm could have a clogged tranny filter.
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Saturday, April 14th, 2007 AT 9:44 PM
Tiny
TAURUSWHEEL
  • MEMBER
I'd take it or tow it to a locally-owned reliable trans shop for diagnosis asap, doesn't sound good. Things just happen. My 99 Taurus, bought new, beautifully maintained, trans flushed 3 times in 65k miles, took off from house, as I was stopping mat the end of the street, felt a big thump under the car during a downshift, that's all folks, planetary gearset fractured in three pieces, no warning no nothing, at least you've got 225k miles out of it.
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Saturday, April 14th, 2007 AT 10:53 PM
Tiny
BIGNICK
  • MEMBER
I already considered it could be a clogged filter, but what about the modulator or, god forbid, the torque converter? I thought if it was a clogged filter, wouldn't more pressure, i.E. Trying to kick it into passing gear, make it go into gear? It seems like it has the opposite prob. It started when I tried to pass someone on the freeway. When I tried to kick it into passing gear it wound up like it was in neutral. As soon as I let off the gas it was fine. It really sounds like a bad torque converter to me, what do you think?
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Sunday, April 15th, 2007 AT 10:13 AM
Tiny
DABASSMECHANIC
  • MEMBER
I know this is an old post but could be the transfer case Shift fork going out Happened in my 94 explorer with a manual trans tested the trans for days trying to figure the prob only to find out t-case had a bad part here is the link to my prob if it's similar to this one. http://www.2carpros.com/questions/1994-ford-explorer-94-manual-transmission-slipping
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Monday, March 7th, 2011 AT 10:19 PM

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