Improperly seated torque converter

[Samistine]

Should have looked at the manual longer, looks like it’s the low switch. Are these switches used for anything other than the cluster?

[fixkick]

Should have looked at the manual longer, looks like it’s the low switch. Are these switches used for anything other than the cluster?

what low switch" the one on the top of 4speed shift lever?
or
the 4wd box, transfer case switch, 4wd sw ,  does change 2 rules (besides light in cluster) or 4wd low range switch which does change TCM shift rules.
1: makes ABS dead or radically  different in 4wd. and for sure low range. selected,
2: changes the fuel mix rules and maybe the TCM shift points,too. just  tad. or prevents TCC lockup. in 4wd.
but the ECU (PCM) does all that all by  it self.

96 car as eCu and TCM separate.
ECU , AT marked is for AT
TCM is , AT brain and the work as team in practices.
shift points, for sure. all this is in the 4 speed chapters all that it does including charts for shift range rules.
ABS too, tells what it does, for all modes and which ones bypass it, as ABS can be dangerous in the dirt,  for sure the first years are crude.
also the cruise control too has rules, based on gears (my be,) I will look up more later.

good luck.

[fixkick]

Should have looked at the manual longer, looks like it’s the low switch. Are these switches used for anything other than the cluster?

what low switch" the one on the top of 4speed shift lever?
or
the 4wd box, transfer case switch, 4wd sw ,  does change 2 rules (besides light in cluster) or 4wd low range switch which does change TCM shift rules.
1: makes ABS dead or radically  different in 4wd. and for sure low range. selected,
2: changes the fuel mix rules and maybe the TCM shift points,too. just  tad. or prevents TCC lockup. in 4wd.
but the ECU (PCM) does all that all by  it self.

96 car as eCu and TCM separate.
ECU , AT marked is for AT
TCM is , AT brain and the work as team in practices.
shift points, for sure. all this is in the 4 speed chapters all that it does including charts for shift range rules.
ABS too, tells what it does, for all modes and which ones bypass it, as ABS can be dangerous in the dirt,  for sure the first years are crude.
also the cruise control too has rules, based on gears (my be,) I will look up more later.

good luck.

more here is the factory wiring clues on ecu, tcm , cruse and the 4wd transfer case and its unque wiriing harness. to it.
pin A16 ecu to tcm 1996  TCC lockup
pin B10 serial comms (2 way ) to TCM.
Simple drawing not full

https://fixkick.com/ECU/92-95MPI-eng-sch...e-huge.png


4WD SWITCH TO TCM and LOW.

LOW RANGE SWITCH 4WD , GOES TO TCM PIN 14,  AND IN TURN THE TCM TELLS ecu THIS FACT AND CAN CHANGE MANY THINGS, EVEN ABS  AND SHIFT POINTS AND TCC LOCKUP;.
PAGE 40 PIN 14 TCM
PAGE 4 IN FSM
http://acksfaq.com/96-FSM-v2-8A-39_pdf.htm

PRNDL SWITCH IS MONITORED, BY TCM AND and by coms from,TCM to ECU.


FOR SURE KEY WIRING IS TCM ALL PINS FOR 4WD AND BOTH 4WD SWITCHES, 2/4WD, AND LOW. RANGE.

[Samistine]

I drove around today and the TCM def changes the shift logic in 4wd low.

Btw, how much vibration is normal in the transfer case selector? The vibration is present at idle and gets a bit worse the more rpm the engine is at. I only feel it by touching the transmission or selector. The car itself feels normal. This is my first time driving a 4wd car

You can sort of see the vibration by looking at the dirt on the transfer case vibrating in this video https://youtu.be/Md3KMRsSfvI
FYI: Flexplate and transmission were swapped over from donor vehicle and the indexing between the torque converter and flexplate was lost.