It's a 99. I thought being stuck in 2nd gear was limp mode because I never ever heard of the old 727s or 904s doing that.
2nd gear start maybe but they would find third.
Perhaps it isn't a limp mode controlled by the PCM as thought?
Anyway THX for throwing that in there. I'll find out.

 

Yes, the 4XRE transmissions do indeed have a limp mode. If the electronics fail, you get second gear, and that's about it.

 

Did you mean 46RE, I think so, and thanks for the info..

 

42, 44, and 46RE.

 

I thought about the X after I left the message, I'm kind of a bone head sometimes.

 

 

They sure aren't self-cleaning. Something the GM fellers have been doing for quite some time. (even back then.) For quite a while, converting to the GM style governor stuff was quite popular. When the borg warner heavy duty stuff came out, kind of made that mod unnecessary. Of course, I think you can still find the kits. I haven't looked though......

And yup. That is the standard problem with 'em. They get clogged up, and shifting gets weird. According to theory, you *could* just clean, and reinstall, but, I don't like doing jobs twice. Do it once, do it right, don't worry about it again.

 

It seems a bit all symptoms scrambled once one or more different things fail. I only had 2nd and rarely did I have 3rd when engine light on and a no shift. Never could I get a third or overdrive, even when going into neutral and back into drive, going any speed or from dead stop. It chose it's gear and that was it, til engine off and restart, then it would be in first and shift to 2, then 3, and at times overdrive, followed by a perfect lock up. Then upon the next stop and go, only one darn gear usually 2nd.
Drove it today another 50 miles with the damn thing acting like it has a fresh rebuild, "perfect" in every way.
I'll post what I do to it this Saturday, and how I'm haunted by this blender, in days to follow. I installed a drain plug in the pan last service, so I might be able to swap more nasty fluid out after the filter + fluid change this Saturday, and perhaps the governor solenoid and sensor "easily accessed" swapped out. I'll leave the two attached harder to access governor pack for if what I do don't fix it ! This Durango even came factory with 3/16 steel, not aluminum, skid plates under both differentials, oil pan, trans, transfer case, and this giant one under the fuel tank. I haven't ran into that before. Raised from factory as well. Back then and maybe still you can order what you want. Dana 4.10 rear diff posi also. Looks like a dump truck from behind. All from dealer like that. Wish it had the 5.7 hemi instead of the 5.9 mag it has. This edition 360 is suppose to have needle rockers and roller cam & chain set up, but I never had to tear into it to verify. Most inefficient engine on the road perhaps, but you can't wear them out, even with an abusive life.
It's worth nothing, but fun to see how long it will stay alive. Still take it on across country trips with a credit card of coarse. Luck so far.

 

All the magnums had roller cams, I am not aware of any that actually came with roller rockers, of any flavor. Swapping to the harland sharp 1.7 roller rockers is a pretty common upgrade though. Makes the cam think it is bigger than it actually is. Good for about 10 hp/tq.

 

I thought the valve covers would at least be leaking by now which would give me a reason to go in and see whats up. Damn, I wasn't aware 10hp would reflect roller rockers. I'll do it if I go inside some day. They put some kind of what seems to be lifetime wires on this thing, they still come off easily and are just as out of the box. I put a cap and rotor an auto light platinum every 100.000, just to keep it perfect. For about 3 years straight I pulled a 18ft enclosed trailer full of tools, two roll-away,s and a 1000 lb Polaris 800 4x4, about 5000 lbs total, and were many times through the dessert I would keep the throttle mashed to the floor, overdrive off , AC on for hours. Around 75MPH, 6 miles to gallon, lol. Had to do the exhaust Manifold gasket passenger side, three bolts broke off,,, making it a two day nightmare! This block might be tempered in a good way now, who knows.
OH tonight I ordered the 149.00 kit with overdrive solenoids, >>governor pressure solenoid, "Borg Werner Heavy Duty",<< as you recommended, and governor pressure sensor, output speed sensor, accumulator spring, .126 upgrade, so they say, duraprene pan gasket, which are OK, and the gasket for the governor block to valve body. I'M sure the only part that is the Borg Werner heavy duty is the governor pressure solenoid. that's the only part mentioned with that name anyway. I guess the heaver accumulator spring they give me wont hurt also. Would be a lot more then $149.00 at parts store for all enclosed in kit.
After all said and done, I have seen the PCM cause nightmares with shifting, however usually with a few confusing codes, instead of just the PO753.
I need a $10.000 scanner that will allow me to actually isolate and test each sensor, that would be so sweet. From what I hear those auto parts $350.00 ones dont gave that option. Maybe you know of the best for the money to diagnose with one might be. I'm 61 now but still doing it on the side. I can figure most of it out with a multi-meter and hours of figuring **** out, but that can be so annoying. Hope my Trans kit comes quick..