In Nov. '03 my the motor on my '97 Buick Park Avenue seized (the person who
changed motors said it was because of a crease in the oil pan obviously
caused in a previous incident prior to my buying the car; should have
checked it out thoroughly in retrospect). Anyway, the motor installed was
said to be '95 Olds (3.8 liter; same size as the original). My question is
what would cause the check engine light to come on intermittently? This has
occurred since Dec. '03. That is, it goes off after some long periods and
comes on after hundreds of miles of driving ... making it wholly
unreliable, I would guess.
Could it be that the install of the replacement motor was not done
correctly or could it be that the replacement motor is not wholly
compatible with the Park Avenue circuitry? It would be greatly appreciated
if anyone with insight can answer this.