1997 chevy pickup was not getting fuel replaced fuel pump switch that had a burnt prong then replaced fuel pump witch had burnt connections then replaced fuel pump pressure sensor checked all fuses changed plugs checked timing won't start getting gas to plugs and getting fire to plugs but won't start no codes registerd and also oil pressure switch any ideas?

Thoughts:

. Try forcing the PCU to throw a code, by cranking the starter motor for 20 seconds.

. It wouldn't surprise me if the Crankshaft Position (CKP) Sensor is bad or the MAF Sensor is dirty (clean with CRC MAF Sensor Cleaner).

. Test/replace the Ignition Control Module (ICM) and coil. AutoZone can test these components for free. If the ICM is bad, you can have spark but it's not firing at the right time.

. Change fuel filter and test fuel pressure at the rail.

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

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