Yes on ASD relay.

Can you generate any trouble codes?



Do you have an FSM? Handy for wiring schematics.

Entry level oscilloscope about $110.


I got it. It works. Add-ons like current clamp and attenuators will run the cost up a little.

 

With the engine running and the fuel pressure gauge attached to the test port on the rail record your fuel pressure. Disconnect the vac line to the regulator and record your fuel pressure.

 

I will be purchasing one of those for myself, I really appreciate the help thank you! I messed around with the Jeep some more. Found out there is a very suddle fuel leak at the fuel filter which appears to only leak a few drops when priming the system. I checked for codes and got code 12 and 13. So maybe I have an issue with my MAP sensor that I have been unaware of. I also tried unplugging the 02 sensor again and swapping my asd relay. Tried starting it up again. It's very strange, it will just crank but no start without much firing or anything, but as soon as I put my foot to the floor on the gas pedal it fires and the idle speeds up rapidly sounds like it's on the brink of starting up. There has to be just one little thing holding it up! I know I've had trouble with the MAP sensor before, and had to wire a new plug onto it. However it never kept my Jeep from starting, just made it run like crap. Also I had an CEL last time my MAP sensor wasn't working but that was for code 14. I haven't tried the fuel pressure test yet but will update you on that as well. All I have for wiring schematics is a haynes manual and the internet. Thanks, let me know what you think

 

58psi of fuel pressure is high. 80% or greater TPS angle while cranking is the clear flood command. Injector pulse is completely cut while maximum air is introduced to the engine. While doing the engine swap did you kink or crush the fuel return line?

 

Absolutely get the MAP sensor fixed, Sounds to me like it's flooding. At any rate, fix knowns first.

 

You can test the map sensor with a cheap hand vac by back probing the ground and signal wire to a multi meter.

 

I've got a 94 FSM manual if you want it, send me email via PM.

 

disconnect your coolant temp sensor, all these motors are very influenced by coolant temp from the sender in the thermostat. If reading cold , enriches mixture...if hot it leans out mix...if disconnected goes to an intermediate failsafe...you cant read it without an obd 2 which you dont have

 

The line from intake manifold to MAP sensor should be checked for clogs or cracks also.

 

these were my readings on a scope... the blue wave is CH2 the CPS just kind of went up and down, the CKPS created the wave shown.