Mystery plug may be the cause of all my issues:

Located in the group of plugs behind the battery. It is part of my engine wiring harness, sends signal power to the TPS.

It’s my 95 Acclaim. 94 3.0 V6, 93 4-speed, 92 Wiring harness. 93 ECM. 93 TCM

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As it stands it runs/drives, but the trans is in limp mode. Thinking it is due to the CEL being lit for a TPS code (which triggers trans limp mode). This little plug feeds signal power to the TPS.