Good morning DOC,

I read in one of the MB manuals, that one of these O2 sensors can cause considerable issues such as engine shuts off and won’t re-start due to the O2 sensor harness grounding with the drive shaft. Do you happen to know if this is correct? My O2 sensor's harnesses look fine with no damage.

The reason I ask is that my 1996 E320 which I though I had repaired wont start, the vehicle is been sitting on my driveway for the last 10 days. At first the car will die as I was driving it, and I would need to wait at least 2 hours so it would start again. So I proceeded to replace the CPS, but I continued to have the same issue and it got worse after several days . So I replaced the MAF and Cam Sensor without any positive results.

Currently the car will only start after sitting for 24hrs and it will only run for 3 seconds and shuts off. Once the car shuts-off the car will crank but won't start again until the next day. By the way when it starts for the 3 seconds it seems to run great. I really need someone experience to help me troubleshoot this issue; I would appreciate any help that can be provided. The following parts were changed within the last 30 days:

Crank positioning sensor
Camshaft sensor
MAF
knock sensor (2)
Transmition wire harness
engine Cooling sensor.

I would appreciate any guidance an help. Thanks in advance.
Norman