Dave, I was able to replace the rpm sensor and I checked the resistance all within specs. I REALIZED THAT I DIDN'T HAVE THEW CLIP ON THE CONNECTION and that is what was giving me all of the funky codes. I cleared the codes and drove the car, like new and no codes other than the tranny . Thanks for your help. setting up an appointment to have the tranny codes cleared tomorrow.

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Many Thanks
Tom Clarkson

68 Plymourh Roadrunner 13,000 miles, Purchased new from dealer (waiting for restoration)
77 300D with many 84 parts 260,000 + miles Runs great but looks ratty
84 300SD Turbo 205000 miles
My new Baby 2003 SLK230 135k miles