Have Transmission Questions? Ask a Mechanic for Answers ASAP
A solenoid issue will not effect D and R engagement. Valve body valves sticking or scored or low line pressure will cause this concern.
Are you sure the filter is correctly seated and the fluid condition is good?
Can you run a lone pressure test?
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Is the 4x4 AWD or auto/4 high/4 low?
Over the course of the driveshaft issues, did all for tires match brand, size, age, and tread depth?
Normally a TR issue will result in not being able to start in P or N or an engagement issue into one gear, not both.
The viscous coupling inside the transfer case could be locked up providing to much power to the front axle causing the driveshaft failure but this should have no bearing on the transmission issue.
You doing it yourself without diag would possibly result in money spent that does not help. At a shop they would diagnose it first to see if it requires removal and overhaul or a repair that can be done with the transmission installed. Estimate as low as 500 up to 1800$
Additives can not help this kind of issue. A used trans and transfer would need to come from a 98-01 explorer or mountaineer that has the exact same driveline. If the vehicle binds in a full turn on pavement, then the transfer case is locked up.
The drive shaft has to be installed to test the transfer case. The front differential would be making some horrible noise shaft in or not if the differential were to blame. I sent a invite to you earlier that allows me to upload files to show you how to replace the valve body.
Sending it again.
The transfer case can not cause the transmission issues.
You have to accept the offer I have sent now twice which allows me to upload files.
The transfer case has a clutch and chain that supplies power to the front axle, there is nothing interfering with the drive to the rear axle in the transfer case.
Sending another one now, 3 total so far. Are you checking your email?
You can see below where I have sent it.
Would you like customer service to help you?
I assume your all set being you did not accept the offer nor reply?