I have a MB 400SE 1992 it is in shop now I just wanted to know if it is worth fixing
this car after changing MAS, Cam sensor Crank sensor, ref sensor, engine heat sensors, engine wiring harness, fuel pumps, fuel pump relay, cat convertor, Distributor caps+rotors
Ignition coils, Ignition Module, fresh air sensor before airfilter, O2 sensor.The check engine light says defective O2 sensor which I already changed. This car shakes when gets warm to 70-80 Degree C idling jumps from(###) ###-####up & down eating too much gas. The spark plugs
get sooty very quickly.Camshaft seals have been replaced as well. After 4 hours of checking by the shop tech, they say it is a misfire cylinder 1, 5 & 7. It could be wiring harness in the dash? is it true? Do I have to pay for the hours they are spending on it to trouble shoot by law?
The car is 106789 miles on ODO Meter.