will not start on 1991 Volvo 940

changed plugs, wires, engine coil, dis.cap and button, fuel filter, but it will not start, trys to start, but wont

Asked by for the 1991 Volvo 940
You may have a failing clutch. Check power to the clutch and try to duplicate the symptoms, then check the signal to the A/C Clutch to see if it's still getting power.
Or have a shop diagnose this for you:
If you get some codes post them and I can assist you further.
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I was having a similar problem with my 94 940 and I just recently replaced my ignition modulator and the problem was illimulated. $140 for the part, it is real easy to replace. Read repair manual before repairing, real delicate part.