1996 Jeep Cherokee XJ 4.0L I6
This is an odd solution, not a question.

I was suddenly losing power while driving, after engine was warmed up well. Felt like either the signal connector to the coil, or crank position sensor. Wiggling coil connector and harness didn't do anything.
Wiggling the connector to the harness of the CPS did make RPM flutter. But that connector and pigtail looked good, so wiggling the harness some more I discovered that the Idle Air Module connector and the Throttle Position Sensor connector had bulging swollen seals. Removed those and plugged everything back in and RPM stays steady even when pulling and wriggling the plugs and wires.
Didn't touch the MAP sensor connector.