The most common failure associated with those symptoms is the Crankshaft Position Sensor.
try to get a new ignition rotor
There's also the crankshaft position sensor mounted on the drivers side / top of the transmission housing. Some auto parts stores carry them, some don't. The voltage connector is on top of the intake manifold, near the firewall. Also check the voltage to the ignition coil.
Check to see if you are getting spark (coil) and fuel
a '95 riviera does not have a distributor. If you mean the ignition coils, then you probably looking at bad ignition module-located under the coils. Or bad crank sensor.
ignition control module in the distributor
Check the ignition control module.
Your ignition module may be out. Or your distributor is out. What kind of vehicle?
== == check that you are getting power to the distributor. i am assuming you are talking about a earlier model vehicle Have you checked the ecm relay? maybe the pickup coil assy.
electronic spark modulator bad.
whi ignition coil wont jabe electrisiti on mitsubichi pk up and distributor
try a new ignition coil
Is it getting spark?, if it isn't getting spark to the plugs and you have a HEI distributor the ignition control module could be blown, take cap off and replace the module, it's the thing with the wires plugged to it inside the distributor.