I have an 88 buick lesabre with a 3.8L engine. The problem I am having is a no start and no spark problem. I've changed the ign coil and the ign module and still nothing,so if there's anyone out there can help me with this problem please do. Thank you

. Test all under-dash and under-hood fuses with a test light or multimeter.

. Check ignition switch for wear, pitting, and melting.

It could be a faulty crankshaft position sensor.