I have a 300E that will run all day long as long as it is moving. On a hot day with the airconditioner running, it will die withing about 5 min if sitting in a fast food line (half-fast). If there is a traffic delay where the car is sitting idling for about 5 min, it dies. The aux fan comes on and the temperatur gage indicates normal temp.
The car will crank, but will not start. Sometimes it *might* sputter, but that is about it. If I open the hood and let it sit for 10-30 minutes, it will start just fine and run all day long again (until stuck in traffic)
I have confirmed and can duplicate the problem. I can drive around, come back home, and let it sit in the street idling. After just a short while it will die every time. It will not start until it has cooled. So, if I try a 'supposed' fix, I can verify if it is truly a fix or not.
Any thoughts?