I need some help reparing my 1995 C220. Problem is the car will idle
rough after driving for over 45 minutes. It will idle rough and misfire until
you stop and restart the car. I had my mechanic hook the computer up
and he says getting a misfire code and some o2 codes. He said since I have
new spark plugs its likey one or two bad ignition coils for $100 a piece.
he would likely charge an hour of labor at $95.
My goal is to not spend more than $300 and fix this problem.
I would hate to pay $300 for the coils and then still have to get the mass error sensor. As that sensor is expensive $300.
Question: Is it possible for him to replace each coil one at time and see if
the error code goes away? Then would only need to replace a coil if it is bad
Question: If the mass air flow sensor is bad, would the diagnostic computer display a specific error code? Or would it display general o2 errror codes like
I have currently.
Note: I put a new wiring harness in a couple years ago. So that should be good.
Thanks in advance!!!