I was driving this morning at low speed when suddenly the car dies out. I tried to restart the car with no luck. I had the car towed back home. The battery and starter are fine. I can hear the starter tried to crank up and fire the engine but it won't go.
Please help me diagnose the problem.

Fred

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94 E320 Silver 210000 miles
94 740il Pewter Green 97000 miles- Retired
05 S430 4Matic
07 Lexus IS250