I am having the problem that alot of these guys are having with stalling, etc. Have replaced EGR, temp sensor (manifold), IAC, ECM, MAP sensor, injectors/reg, plugs wires cap and rotor. Have checked throttle position sensor, ignition module. Still nothing has made any difference in my problem. It looks like the fuel flow from the injectors into the TB is interrupted slightly as the engine runs rough or dies suddenly.
Saw your advice about pickup coil and and don't know where that's located. Also saw something about a fuel pump relay and don't know where that might be.
I suspect the fuel pump may be weakening, but don't know how to test it. Is there a gauge kit I can buy to check fuel pressure? What PSI is correct?