bassboost

-textherex, even at age range, it's probably less than 10 months old.

-Domaas, I can't quite say much on my knowledge of heat. I don't have any external cooler or a transmission temperature gauge. Only thing I can say is the fluid doesn't appear black or has a strong foul odor.

-Cherokee90, I don't know how it could've gotten damaged during that installation. Basically, the life of each of these swaps are as follows...

Original trans went out, and replaced with current transmission w/ shifting issue.
When transmission was swapped out, I put fresh fluid in (DEX3 w/ filter). After swap, I had no issues with shifting other than occasional cold morning 1st to 2nd shift delay @ 3000rpm.

Then, about a few months later the original engine blew. Replaced engine, and still current transmission shifted and operated the same with no issues other than above stated shift delay when cold.

And then now, no more than 10 months later with very little abuse or hard working this issue has arose.

Domaas

at this point there is just way too much quessing to really help.

you need to get some facts with some reall troubleshooting.

test the TPS.
(instead of copying and trying to take credit here is a quick link(goolge is awsome)
http://www.jeepforum.com/forum/f11/how-test-tps-610386/


if that is good, its time to put some pressure guags on the trans to check line pressure and pump pressure.

textherex

Agreed with Domaas, there is lot of things that could happen. Hurting the pump would take a hammer on the torque converter to get it in. If I am not miss taken that our trans take ATF+4. Not sure if there is an issue using DEX3 or not. But yes, more diag and understanding of what is going on. Knowing the pressure is a great help. I doubt think we can be of anymore assistance for you at this point.

DFlintstone

Hey...maybe we can learn something...Yea, how do you do that...


Dexron III for sure. In the Transfer case also. (no idea if 4 hurts, but 3 is IT)

I run it in my power steering also. Not saying anyone else should but in 12 years I don't see a problem.

Domaas

there are 3 major parts of the coverter that need to be checked during install. there are 2 splined sections1 stator.
2. turbine and one notched section, drive hub.

when you install the converter on the transmission,prior to installing the engine, you should feel the converter engage all three sections.

as you slide the converter onto the input shaft of the trans, you should have to "rock" the converter side to side during install, feeling it engage the first set of splines, then the second set, and finally the drive hub.

the first two sets of splines are almost impossible to miss, but the drive hub is easy to "miss".

the drive hub drives the transmission pump. If you fail to index this section, the hub sits on top of the pump, driving the pump into the housing and causing undo wear, the pump may work for awhile, but the side load on the oump will toast it, causing loss of pressure and leading to eventual pump failure, can also cause a grinding noise, or thumping sound as the drive hub"skips"along the trans pump.

in properly installed converter, you should have to pull the converter to the flex plate by about 1/8 inch.

if you had to "pul" the motor to the trans with the converter touching the flex plate, you failed to properly index the converter.
hope this helps.

bassboost

Well, unfortunately today unable to get anything accomplished due to rain

-Domaas, when I installed the torque converter, I had to wiggle it on. It didn't just slide right on without a tad of effort. I didn't hammer it on or anything with force. When I attached the trans to the engine, I moved the trans toward the engine, not vice versa. Also, when I tightened the tq conv to flex plate, I had to pull the torque converter towards the engine just a little bit. Not much though.

As stated earlier, everything was operational and working well besides the cold 1-2 shift for a few months without any issues, odd noises, vibrations, etc.

Will be getting to work asap tomorrow morning with good weather. I went and bought a TPS to put in for good measure, and will conduct solenoid tests if need be. I'm unsure how to get pressure readings from the pump, I know this has to involve a gauge and putting it between the lines somewhere. Also, I did use DEX3 in the transmission and tcase.

bassboost

Update from today.

Installed a new TPS. Jeep fires right up without any problem, also had my dad and another person inspect fluid level and condition, all appears good.

Tested Solenoids, 14.0-14.1-14.3, resistance of my test prongs was .3

TCU tested out fine doing shift test.

To conclude, it appears the TPS caused this issue. However, I'm waiting on electric fans to come in so I can properly go out and test drive. The test I did today driving was only warming up for about 5-10min, then a couple minute drive around the block. Also, no more cold condition 1st-2nd gear shift @ 3k rpm as well as sputtering/hard start.

Will be keeping everyone posted on what the final verdict is once I get the cooling fans on, btw installed a transmission cooler too!