make sure you have fuel coming to your injectors, could be your fuel pump.
rpm went to zero cranks but wont start
An engine which cranks but will not start is not receiving enough fuel or has no spark. A clogged fuel filter or bad spark plugs often cause this problem.
are you getting spark?
You are missing fuel or spark.
Tune it up. Replace the spark plugs, plug wires, distributor cap, rotor, fuel filter, and air filter.
Cranks is the motor turning over, But cranks and won't start means either you no fuel or no spark or both.
If it cranks, first confirm spark present
crank sensor
Look for spark and fuel 1st then comeback
did you have a hot spark when you tested for spark ? i did you test the fuel pump pressure ? did you cheak for pulse on the coil to see if you were getting a signal ? i have spark, gas, the fuel pump works great and the coil is getting plenty of signal but it still wont start What was the fuel presure reading ?
ignition coil! mine did the same
Start small, check fuel pressure, then check to see if it's getting any spark. doing these two things first can narrow your search greatly.