Intermittent Code 41 Gremlin

[Trk90]

Just curious… have you tried installing the suspect ecm in the “good tracker” to see if it starts hours, days, etc. later? Also, have you replaced the caps on the suspect ecm? I remember when my 1990 started running rough and eventually wouldn’t start, the mechanic said he could get it to run by literally banging on the ecm.