no rpm
 

anyone ever had the rpm signal completely lost? i recently hit a bump and now it is not reading rpm either at the tach or at the S-AFC? connections all good and crank position sensor is ok.

Start checking wires. Something came loose. Also check ur grounds.

The tach signal comes from the trailing coil pack.
You can trace it in the FSM.

trailing coil, sweet i didn't check there. thanx man.