I had issues with the Borg warner governor pressure solenoid and replaced it with a Mopar one.

I found notes the other day from when I was doing diesel trans upgrades and I wrote down ROSTRA solenoid and gov. pressure sensor on it. I'm getting ready to redo my BUILT BY ME trans that was behind my hopped up Cummins it's been sitting for a decade in the backyard in my lawn ornament , and convert it from 4wd to 2wd with the 2wd OD unit I was able to finally find this past weekend. There's some good info shared here jogging my memory.

I don't use the plastic cased filters in my 47RE's , I switched to the old stlye ones mounted to a deep pan filter spacer as the plastic case is a restriction to flow, also stopped using ATF+4 after the first fluid change back in 2001.

I have plenty of the old style filters without the plastic housing. Thai 01 is the only thing I have ever had that takes the plastic cased filter. Where do I get this filter extension adapter? Is it something I can get from somebody like sonnax or rostra? So far so good, and I noticed that the trans temp readings in getting with the new parts in place are making more sense

"also stopped using ATF+4 after the first fluid change back in 2001" Why and what are you using now???

Yeah I'd like to know that too. I can't believe,nor can I afford, $11 per Quart.
I've since found places that have it for $8.something, which is still too high. . totally ridiculous.
Mines running good, occasionally hits 3rd a bit hard when I'm light on the gas

Only trans that really “needs” it are the 46/47/48 that see a lot of usage, especially towing.

The overdrive gearset will last a lot longer if run with 4.

Three speeds are one to one in 3rd so the planataries don’t see the same wear.

All the electronic transmissions - FWD 41/42 and RWD 45/545/RFE benefit from longer clutch and converter life because the clutches are not on/off clutches like the old transmissions.

As for flow on the plastic filters, the entrance to the filter is larger than the entrance in to the valve body.

believe it or not, i have used the common dexron fluid in my 99 caravan for all the years i have had it, and it is now at 175k with absolutely no problems whatsoever.
however, i don't do dragstrip starts or neutral drops.
it also has a transgo shift kit in it. that kit does not bark the tires at every shift, it just take care of the things that can cause problems with those transmissions[transaxles]

Well fu@k... I get to pull the replacement out and start all over again. I got about 1200-1500 miles out of that trans, and pulled my camper (<4000 lb, Durango os rates to pull something like 7100) about 140 miles, and after a day of driving around without the camper on the ball, I get back to the campsite yesterday and the trans is neutraling out every time I stop, whether in d or r. I know I'd be screwed if I tried to bring camper home like this so I made a mad dash for home to swap it out with my truck, and made it a little over halfway and it said "I'm done". Many stops and much time coasting on the shoulder to get that far, shut it off, let sit 2-3 minutes and it will engage again. Much of the 80 miles or so I made it was in 2nd gear at 35 mph. It would neutral out when it tried for 3rd. There was one stretch of 10-12 miles where it seemed fine, hit all 4 gears and l t me have 70 mph. But I probably coasted to a stop along US 41 hoping it would grab again when I restarted it, 25-30 times to make it to far.
It pulled my camper down here like it wasn't even there on Sunday. And was fine for around 100-125 miles after that Sunday after I dropped the camper and most of the day on Monday. When it started not wanting to pull I could really hear the front pump whining.... I checked fluid, no signs of a leak, level was fine.

I had to call my son and have him meet me with a trailer and bring me my 12 ram 1500, he trailered the Durango the rest of the way home.

I had a 727 do that and found the filter was plugging up and when it sat the fluid would drain back through the filter enough get sucked back through for a while until the filter clogged up again. I only had to sit 5 or 10 minutes to go again for a short while.

I had very similar symptoms on my 2001. Neutral out, stop, go again, repeat, including whine. On mine the converter valve retainer broke partially ejecting it from the valve body, which dropped the system pressure and totally burned out the rear clutches.

Thanks. Gives me an idea where to look
I have 2 of these now to go thru, I think the original one crapped it's overrunning clutch. Way different symptoms than this one. I'm gonna finish my campout first Durango is safely back home, I'll be using my newer pickup with it's (gasp)4.7 like I did earlier this camping season to get the camper home with. And I have a 3 day weekend to figure out where I go from here.
This Durango has to run again because I can't afford to replace it for 1-1/2 years when my '12 will be pd for unless an inheritance falls from the sky.
I'm glad I've been thru the innards of these tranny's before, but my mind is a bit foggy on the subject.