A friend of mine took his 2000 Regal to a hack hoping to save a few bucks on
a tuneup. He had the plugs and fluids changed. Now the car has a serious
misfiring problem, Check Engine light comes on when accelerating. Of course
he believes this is a coincidence.
He currently has the car at another garage (not dealer) trying to save a few
more dollars. :-) The previous replacement plugs are toast, seriously
scorched. The injectors were cleaned and a new fuel filter, but still no
joy. The things been under diagnosis for about 10+ hours now, at $X per
hour. Apparently the trouble code does not pinpoint the problem and it does
not appear to be any given cylinder(s). The current best guess is an
intermittent timing sensor.
I told him to take it to the dealer after the first fiasco, but he is
convinced that the dealer will just keep replacing parts until his wallet is
empty. I would think that experience and the right equipment would go a long
way to solving this problem in short order. He will only get hosed by the
dealer if he lets it happen.
So how hard are these problems to diagnose? Who's right?