I had my non-MB mechanic run my 85' 190E car in his Snap-On Emission Analyzer and he said that I'm off the charts on the following readings:

HC - Hydrocarbons and
CO - Carbon Monoxide

His solution ......... new Catalytic converter and O2 sensor. Dope!

Has anyone had this problem and use the same approach in fixing the problem? Also, are there two types of O2 sensors with my model year? One at the exhaust manifold and one at the catalyst (got those info from FastLane).

thanks in advance!