Intermittent stalling issues.
Radio cuts out and comes back on while driving, intermittently.

Owner also advised that the vehicle had been in a minor front-end accident.
The battery and the alternator had been replaced from a spare vehicle that had hail damage.

Noticed that if any electrical load applied, could reproduce the low idle (i.e. flash high beam).

Turned out being a poor ground terminal crimp creating voltage drop on this main circuit.