I restoring a 91 plymouth laser and need help with engine bay wiring now have spark but still no pulse, replaced ecu and fuel rela

YOU NEED EXPERT TEST EQUIPTMENT,,YOU NEED DEALER TECK HELP. TAKE IT OR TOW IT TO A DODGE DEALER

blown fuse. ; is first, as per always.
2nd is scan it, did you scan it yet? that is always 2nd.
all efi engines, all ECU , all cut injectors for (noid lamp test dead?)
you said pulse,does that mean fuel pulse or electronic pulse to injector coil..... ? all injectors dead. or just 1. same for spark.
toss coin land, noid dead. all noids
loss of. NOID signals.!
1; spark
2: lose of CMP or CKP signals (cam or crank senders)
3: ecu sees wide open throttle it cuts fuel 100%
4: ecu bad, is CEL lamp dead key on? scan it.

The crank position sensor (and or) the cam position sensor send a message to the computer. The computer then activates the fuel injectors and coils.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/justin_3ae27a9d61d6acd4

This could go several ways #1 engine mechanical check cranking compression should have 125 psi or greater in all cylinders if low but even squirt oil (1/2 oz.) in 1 cylinder and retest goes higher then rings sealing has been lost. if uneven check timing belt for jumped or misalignment. #2 electrical does it have electrical spark to plugs crank engine with a spark plug connected to spark plug wire laying plug on engine can you see spark? No test ignition coil wires with a logic probe both terminals will be red with key on one will flash red/green when engine cranking does not the primary ignition needs repair Ignition module? or pick-up coil/ crank sensor. #3 fuel system pressure and injection pulse. injection pulse can be tested with logic probe DONOT USE A TEST LIGHT YOU CAN RUIN THE ECU .

If ECU has crank signal and engine turns over, ECU should give injectors a pulse and trigger the ignition. If not ECU might be bad. You should check power and grounds going to ECU. There are usually multiple power and grounds going into ECU

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vast ideas i have on any 91
i restored one ground up......
first off , what transmission?
and does it have a tachometer,
if the tachometer goes dead , even cranking the ECU will think
no spark and cut fuel in 3 seconds,
nostarts are covered here
fixkick dot com

there is no need to guess. ask for help, not throw expensive parts.
.

Do you have pulse to the fuel injectors? The besy way to test is with a set of NOID lites; these can be rented at many places like AutoZone for little or no cost. Unplug a fuel injector and plug in a noid light; if there is no flash you know you have minimized your search. My gut feel is your trucks ECU (Engine Control Unit) these units from early 90's Mitsubishi have big isses with the capacitors leaking (a matter of when not if). I fully expect you'll need to replace the ECU (the NOID lites will confirm this) when changing the ECU you want to identify it by the MD number on it, this it what you'll need to order a new one. I have had two Montero's and now my son's 3000GT all of whichhad their ECU's fail.
This issue can effect either spark or injector pulse.
Please see attached link for further info:

http://en.allexperts.com/q/Mitsubishi-Repair-824/Galant-spark.htm

I hope this may have helped,
Tom

Voltage is applied across the coil primary only in brief pulses too short to light the typical troubleshooting light. The 2 seconds you are seeing it light is just before the coil is hit with pulses. After that brief span, voltage is applied and removed too quickly to detect that with a light.
 If you are getting no spark, it is because this rapid application and removal of the voltage isn't happening at all. This can be caused by a failed ignition module or ECU. In your engine, there may also be a pulse transformer in the distributor that supplies signal to the coil instead of the pulse coming from the ECU. Pulse coils will normally measure from 6,000-12,000 ohms if they are still OK.  

I would recommend you replace the ignition module.

wrong timing, readjust the distributer.