Starting on 1992 Volvo 740

1992 Volvo 740 will not start. Regina engine.
new coil, coil wire, plugs, plug wires.
Will start with ether.

Asked by for the 1992 Volvo 740
2 answers
Several possibilities:
Check DTC's, You may find a 2-1-4 code for the RPM Sensor. Replace it if you do.
Here is how you check the codeCode descriptions: s:
Code Descriptions:
check relay under hood, mounted on overflow tank.
Switch wires to aux relay, next to it.