90 not starting

[aclafontaine]

i have a 90 buick riviera and it doesnt start. i have checked the pass system and it doesnt eem to b causing the problem. fuel pressure is good. i removed one of the spark plugs ad tried to start the vehicle to make sure it had spark but nothing. any ideas why i wouldnt be getting any spark? the vehicle was being driven when it just died. i assume it died due to lack of spark.

any ideas would be great.

[maxwedge]

Welcome to AF, no spark and no injector pulse can be caused by either the ign control module under the coils or more likely the crank sensor, access to a scanner will allow you to check for cranking rpms, also check the wiring from the cps to the icm.

[Scrapper]

have you checked see if you got spark on the coils or coil pack i no you said you pulled plug out. now if your getting spark on all plugs? i would go for the module. and like mod says could be you cps.

[HighMileage230000]

The same thing happened to me and it was the Crankshaft Position Sensor. I found this out after replacing coil packs, ignition module, and camshaft position sensor.