When I replaced my rear main seal, could I have miss aligned my flywheel?

Check the ignition timing-you could be correct on the impulse sensor

There is no way you can set the flywheel wrong. There is a possibility of the flywheel sensor gears being damaged or the sensor itself or its wiring is faulty.

What do you mean by not running right?

I believe yours is turbo which means the crankshaft position sensor is in the distributor therefore the ignition timing is not from the flywheel, which is for sensing engine cranking only. If you had removed the timing belt and/or distributor, I would suggest rechecking those.

Is your vehicle with or without turbo?

Which engine do you have?

ELECTRONIC IGNITION

The electronic ignition ECU controls primary windings of ignition coil using signals from fuel injection ECU based on crankshaft position, engine speed and vehicle speed. Turbo models use a Hall Effect sensor, located in distributor, to determine crankshaft position and engine speed. Non-turbo models use a flywheel sensing permanent magnet generator to determine crankshaft position and engine speed.

Seems our database has conflicting information. Upon checking the wiring diagram, you are correct, the distributor is a stand alone and does not have any sensors within it.

The repair manual does not place any special note on the flywheel installation and from my personal experience, it is not the main point. If the flywheel had not been torqued correctly, you could have a problem. The other thing is that the impulse sensor wires tends to get brittle over time and since you meddeled with it during removal and installation of the engine, the wires could have been damaged.

Btw, have you checked the ignition timing?

That could indicate a loose timing belt.

Thanks for the info. Does not have this information.

Sometimes we just need to go around in a circle to get something done though the answer is there.

Have a nice day.