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Very often this is caused by either faulty distributor pick up or a faulty PCM . If you've already replace the distributor pick up then checked the plug connector at the PCM to be sure does not corroded or faulty . While the car will not start unplug the map sensor and see if you have five volts on the center terminal . If you do not have five volts in the PCM is bad
Where is the map sensor, and where do I check for the 5 volts (PCM, connector or map sensor? Do i have any issues with cleaning the PCM or connectors if corroded?
The map sensor is located on the firewall on the right hand side of the engine compartment . Using a volt meter checked to see if you have five volts on the center wire with the key on in the engine off
If you find corroded terminals at the PCM there's no problem at all you can clean those and reattach