I had to replace my intake manifold and immediately had oil pressure sensor failure. Not so hard to fix but the oil all over inside engine compartment was a mess. After fixing sensor started and test drove Durango. Pulled in driveway and degreased the engine compartment. Damn think has not turned over since. I paid a mobile mechanic a load of money for 5 hours of him playing with himself I think because nothing changed. I have replaced nearly every single sensor, PCM, Ignition Coil, Plugs and Wires, Distrib. Cap and rotor PCM Pin Connectors. No longer throws any codes when scanned but still just cranks no spark or start. Ready to shoot the damn thing Anyone have any thought as to what I can try next?
98 4X4 SLT 5.2 Liter

 

Am now concerned that PCM needs "Flashing" with my trucks vin number?????? Is this really necessary.......Help Quick PLease.........Getting desperate here....

 

So it worked until you degreased it? If so you could have water around the spark plugs shorting the wires to the block. It might have damaged the coil if that was the case.

 

No not necessary.