Why aint it staring

You've introduced some more problems by randomly replacing parts and it sounds like that is part of the problem. Was the battery disconnected or run dead shortly before the original stalling problem started?

You have something that failed in the timing belt whether it is the belt, tensioner, pulleys or the belt broke.

You need a shop to help you with this repair.

Roy

No, it has to do with the belt failing for a reason.

Roy

Absolutely. You need signals from the crankshaft position sensor and the camshaft position sensor for the Engine Computer to turn on the automatic shutdown (ASD) relay which powers the ignition coil and injectors. You didn't state which engine you have but whether it has a distributor that turns with the camshaft or it has a separate camshaft position sensor, no signal will be coming from it if the timing belt broke. Some engines are "interference" engines too which means if the timing belt broke or jumped more than three teeth, a valve job and head gasket will be needed too. At 130,000 miles the timing belt is overdue to be replaced if it wasn't already.

I think you have the right idea but there's more to it. The crankshaft position sensor signals tell the Engine Computer which piston is coming up on the compression stroke so it knows which spark plug to fire and when. The camshaft position sensor signal tells the computer to synchronize the injector pulses to coincide with the opening of the intake valves.

The reason neither the ignition coils or the injectors will work is the ASD relay is not turning on. That happens when the signal from either sensor is missing.

Nope. How did you jump to a knock sensor? You already found the timing belt is not turning. No need to look at anything else.

There is a very small chance there has been no valve damage done. If the belt broke just as you were trying to start the engine, or as you said the engine stalled at idle, there is a tiny chance none of the valves were opened fully and got hit by a piston as it coasted to a stop. Turn the crankshaft by hand and turn the camshafts by hand to line up the timing marks, then install a new timing belt. If you encounter any resistance when turning one item, stop, back up just a little, then turn the other one. Alternate as necessary until everything is lined up, then install the new belt. If you get lucky, the engine will start and run, but expect it to have no compression and need to have the bent valves replaced.