95 C220 Stalling On Occasion

I have a dilemna here. I have a 95 C220 with 60,000 miles. My wife usually drives the car and had told me the car will die will she is driving. I did notice the engine light on and took it to my mechanic. When he put the computer
on the car he found it to be one of the two oxygen sensors to be bad. I had
him go ahead and replace both sensors. The car seemed to run fine for about a week since it was repaired until yesterday. When I took it for a
ride the car stalled on me when I was driving down the street about 30
mph. All the instrument dash lights turned on. It took about 4 or 5 trys to start the car and I was worried it wouldn't start. My wife is now frightened
to drive the car with the kids. I don't blame her because it can be a
dangerous situation on a freeway or RR crossing. It probably would be hard
to pinpoint the problem because the car runs fine. I just tuned the car
at 40,000 miles. Any ideas would be appreciated. Thanks.

[mbdoc]

You might try a search on over load relay(voltage protection relay). ON your car they were modified to keep the car from stalling. MB part number 000-540-52-45 is defective, replace with 000-540-67-45.

[David C Klasse]

YUP, It's more than likely the OVP! Do a search. You can even order it from this website for only about $50.

Good luck!

[Charles]

I have a 94 C220 with 52K miles. I never encountered shutdown during driving. But a couple of months ago, it just could not start. Following this web site for a period of time, I had idea in mind that it most likely be the OVP problem. I used a multimeter to measure the pins according to the diagram on the side of OVP. I found one pin from the smallest relay, Sorry I don't remember it's pin9 or pin12, has no 12V voltage coming out. That's the problem. Replace with a new one, everything is fine till now. You can try to diag by yourself.