Just wanted to follow up with this 93 MB. We located a vacuum line off under the timing cover, and all seems to be well. Have been driving this car for weeks now. No check engine light and runs well. Thanks again.

Now we have a 2000 ML320 that cuts out hot and cranks but won't start. We banged on the fuel tank and the vehicle started, so we replaced the fuel pump. Again, when it gets hot, shuts off with no spark and no fuel pressure, no power to the fuel pump relay. We have cleaned all the ecm connections, checked fuses, harnessess, etc. Any thoughts on this one?