Hello from germany,

my name is Elmar, I´m from germany and I have trouble with my car.
I have a model year 1994 E320 Convertible USA (California-Model) which has bad idle that always goes up and down around 700-850 RPM. Even worse, if I shift from "P" to "D" or "R", the car jumps around then. Starts to run bad if the coolant temperature is around 50°C and get´s more and more worse the warmer the car is getting.
I always read trouble code 035 "O2 system operating at rich limt, mixture too lean". I use HFM-Scanner and the O2-Sensor does not seem to operate, it is always 180mV, Lambda Operation is at maximum 25%.

So I replaced the O2 Sensor without any effect, problem is still present.

I always notive an air sound - you may also hear it in my video:
http://www.verdeckmotor.de/wp-content/uploads/2015/02/IMG_1853.wmv

I checked the OVP-Relay, the relays inside are very hot and there were some bad solder joints I fixed but without any effect, the relays inside are getting hot, only when the car is operated. Fuse is 15 Amps and okay, Part Number is 0005406745.

I have no idea what to do next - test equipment is present.
ANy ideas?

Thank you from germany

Elmar