Car is stalling & I'm out of options...
 

Last weekend the car died as soon as I turned it on. So assuming it had something to do with the OVP, I pulled it out and the car started and drove fine, it didn't die. In the morning or anyother time I have to start the car "cold," I have to put the OVP back in. The car won't start cold without the OVP. After driving for a little bit on Monday, Tuesday and today, I have to stop the car, open the hood, and remove the OVP so it doesn't die on turns or at stops. Every time it dies im sitting still or making a turn. So today I bought a new OVP. It seemed to run better than fine, except around 6:30PM (about 4 hours later) the car died again at idle with the new OVP in. I am so confused and was wondering if you guys have any other hints...

Could be intermittent suupply of fuel. Check the fuel pump relay.
I had the same problem, and that solved it. A lean condition could also cause the stall.

I'm not sure of which year 124 you have but is it new enough where you can access the trouble codes and see if the computer has stored anything?

I know most of the w124 guys including me have this problem.....well i finally bit the bullet and brought my car into a stealership, from what i was told that it is the engine wiring harness, it eroded down to the wire, i didnt really take a look at it but i didnt care, i wanted my car fixed, so there you go.....that what i got from the dealership, also im changing 2 engine mounts and a tranmission flex disc or something like that, im broke, but my car will work again......any comments??? it would be very helpful.....

300 E 1990 4 Matic
 

I'm having the same problem with my car stalling... I bought an OV relay and tried that.. (didn't work) Then they said it's the fuel pump relay... (didn't work) so maybe I should check the wiring harness.. could someone tell me where this is located..

Or maybe someone has another opinion...

thanks,
Gina

I had the stalling problem. There were many codes displayed. After changing the wiring harness all is well.