Bob, Steve, and Rohit,
I'm glad you responded, thanks!
I *believe* I have the emissions problem fixed, I had the Check Eng lite and P410 code. Pulled the RCM and did the resolder and relay refurb, now the recirc fan cycles as it should and no more code. (I'm most comfortable working on old British cars..)
The previous owner might have tried their own version of the sticky key fix, the ignition switch assembly is in really rough shape. I've got a new switch and used lock barrel assembly coming. There's a few other electrical issues, and I think they are related to the messed up ign switch. We shall see.. I've also ordered an UltraGauge as well.
Very good to know there's a good MB mechanic nearby.
Steve, do you drive a black coupe? Spotted one on Farmers Lane last week.
John