I had an intermittent problem starting my van. At times, it would crank fine, but not kick over. Turning the ignition key off and on again and it would start. Someone suggested cleaning the relays or replacing them. I did both. I replaced the ASD and fuel pump relay. Problem is still there. If it were the crank or cam sensor, would it occur intermittently ? Meaning, if I turn the key completely off and start the car again, it will start. I noticed I have to turn the key to the off position before it will start. Just leaving it in the on position and then cranking it again does work. It acts as though something does not get activated or energized every time and resetting the ignition switch resolves it. No codes are set either.
Nick