My 400E has an intermitant power loss problem. Out of the blue the car will lose power for just a couple of seconds. Tried new plugs recently and the wiring harness looks good. The Crank angle sensor does give me a reading of 850 ohms cold and 1000 ohms at running temp. Fuel pressure is good when the problem is not present. There was a code in the computer of 26 communication between engine and diagnostic computer? Does anyone have an idea what to check next? Thanks John