I've got a '93 4.9 L6. Started having starting problems about a week ago, was only getting intermitant spark.

I replaced coil, distributor cap, rotor, plugs and plug wires and had the ICM checked at two different stores. After I did that it started fine for a day then quit. It never stalls while running, just will not start at all.

I know I'm not getting spark at all. I've also checked all wires for breaks and cleaned connectors.

What should I try next?

 

Possibly the pickup in the dist, first check for power to the coil.

 

Firend of mine had that issue too, check the TFI modual on the side of your distributor, make sure its tightly mounted down.