What necessarily was the reason for the deaths of the 85-86 DeVilles' engines? My girlfriend's 86 Sedan, my friend's 85 Coupe, they all died because of some kind of engine failure and I've always heard that they had "bad engines." I'm curious as to what the problem was with the 4.9's from those two years? Was there some kind of defect or design flaw?
Also I have another question. In 1985 did Cadillac make an '85 DeVille with the old 80-84 body with a RWD drivetrain and then switch their design to the FWD DeVille somewhere in 1985? I've heard of half year models of certain cars and I'm wondering if the same thing happened here. Thanks, I just wanna know for my own personal knowledge.