check the connections between the opti and and ecu it could be corrosion specially where the connection goes into the opti itself (blame the bad opti design on Gm and there afterthought dept)
distributor cap and rotor
Diagnosis: Engine Won't Start or RunCheck related link below
if you're looking down at the distributor it rotates clockwise while running.
I'm not sure I understand your question. The ignition module is suspect in this case and yes, it's under the distributor cap. You may also want to replace the distributor cap and rotor while your at it, they're cheap parts and hair-line cracks in a distributor cap can be hard to detect. If all of these fail I'd look at replacing the coil and coil wire to the distributor.
It is inside the distributor, it has three wires running to it, and it looks like a small black plateIt is inside the distributor, it has three wires running to it, and it looks like a small black plate
try to change the ignition coil.
Did you replace the fuel filter?
check the harmonic balancer
Check your timing, if it goes out of time a small margin it won't start properly or not at all.
The distributor don't, But the ignition module that is bolted inside of the distributor does have a part in the fuel pump running.
A distributor cap on a vehicle might be bad if the car is shaking more than normal. Other signs include stalling after the car has been running, squealing and rpm's running high.
i just had the similar problem. i repaced the coil pack an the ignition module. they are not hard to do. if then you still have no luck replace the distributor itself. its not hard to do but you will need to check the timing once you have it running. get yourself a chilton an haynes book. it will help you along the way. best of luck.