Ranger Problems 4R44E
#1
07-20-2014
Join Date: Jul 2014
Location: Arizona
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Ranger Problems 4R44E
I have a 2000 ford ranger, 4cyl, 2WD, with an automatic trans.
One day the Reverse started slipping really bad as I pulled out of the driveway and would hardly move. I put it in drive and it slips and does not move. If I turn overdrive off it engages fine and shifts perfect. It throws no codes/ no check engine light. Trans fluid level is good and no unusual noises.
I checked all of my fuses and wire connections. OHMed out all of the Solenoids (all SAT). I found no metal in the pan. Put in new torque converter, new clutches and bands, rebuilt servos, rebuilt pump, and new valve body gaskets. Checked everything for binding and cleanliness, its all good. Put everything back together and it has the same problem. No overdrive or reverse...
I don't know what else to do no besides start replacing solenoids even though they OHMed fine, or the transmission range sensor, the TSS, the PCM, TP, I don't know.. Wouldn't it throw a code?
If anyone has seen this issue or could offer some advise on what to check out next it would be most appreciated. Might have to break down and take it to a shop.
Thanks,
Defeated Ranger Owner
One day the Reverse started slipping really bad as I pulled out of the driveway and would hardly move. I put it in drive and it slips and does not move. If I turn overdrive off it engages fine and shifts perfect. It throws no codes/ no check engine light. Trans fluid level is good and no unusual noises.
I checked all of my fuses and wire connections. OHMed out all of the Solenoids (all SAT). I found no metal in the pan. Put in new torque converter, new clutches and bands, rebuilt servos, rebuilt pump, and new valve body gaskets. Checked everything for binding and cleanliness, its all good. Put everything back together and it has the same problem. No overdrive or reverse...
I don't know what else to do no besides start replacing solenoids even though they OHMed fine, or the transmission range sensor, the TSS, the PCM, TP, I don't know.. Wouldn't it throw a code?
If anyone has seen this issue or could offer some advise on what to check out next it would be most appreciated. Might have to break down and take it to a shop.
Thanks,
Defeated Ranger Owner
#2
07-20-2014
No need to post this all over the forum. The mods will delete the duplicate threads anyway. While I can't specifically answer your question, I'm sure someone here can. Just be patient. It's Sunday night, so I'm sure a lot of the guys aren't active right now.
If you haven't utilized the search tool yet, try it. I'd say 80% of the questions asked by new members have been answered on here at some point before.
Welcome to RF.
If you haven't utilized the search tool yet, try it. I'd say 80% of the questions asked by new members have been answered on here at some point before.
Welcome to RF.
#3
07-24-2014
Sounds like a flipped sprag. Its the ratcheting mechanism that allows the vehicle to coast when you let off the gas. If the teeth flip then it just slips and the only way to go is to put it in manual 1st or 2nd or turn off overdrive.
When you do this the coast clutch engages and overides the spag and directly links the input shaft to the rest of the transmission.
This sprag should be the part right after the overdrive drum/ planetary set. This would be the last item you remove before removing the center support inside the transmission
Make sense?
Here is a pic of the sprag on the right:
When you do this the coast clutch engages and overides the spag and directly links the input shaft to the rest of the transmission.
This sprag should be the part right after the overdrive drum/ planetary set. This would be the last item you remove before removing the center support inside the transmission
Make sense?
Here is a pic of the sprag on the right:
#4
01-01-2018
Join Date: Jan 2018
Location: St. Paul, Minnesota
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Sounds like a flipped sprag. Its the ratcheting mechanism that allows the vehicle to coast when you let off the gas. If the teeth flip then it just slips and the only way to go is to put it in manual 1st or 2nd or turn off overdrive.
When you do this the coast clutch engages and overides the spag and directly links the input shaft to the rest of the transmission.
This sprag should be the part right after the overdrive drum/ planetary set. This would be the last item you remove before removing the center support inside the transmission
Make sense?
Here is a pic of the sprag on the right:
When you do this the coast clutch engages and overides the spag and directly links the input shaft to the rest of the transmission.
This sprag should be the part right after the overdrive drum/ planetary set. This would be the last item you remove before removing the center support inside the transmission
Make sense?
Here is a pic of the sprag on the right:
From everything that I have read I think I have the same problem (a bad OD sprag). What I haven't been able to figure out is, other than the inconvience of having to manually shift through the gears on a automatic, is it bad to run my truck indefinitely with the bad sprag? My understanding is that if I wanted to fix it I would have to basically replace the transmission and that the bad sprag will wear my current transmission making it not worth rebuilding. Is this correct? Not sure if I want to dump more money into the truck right now and knowing that there aren't any other unforeseen adverse effects would be appreciated. Thanks in advance!
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