1995 4.0 Auto
I have replaced the CAPs in the ECM also have a 2nd ECM. Coil & CPS is new. Fuel PSI was tested all checks out. Grounds are all good and cleaned also add some to make sure was not grounding issue.
Seems when temp changes I have this issue. Was very warm and humid got cool over night seemed to be moister under the hood Cranks over just no spark.
Few times its started hard like timing was advanced but that has only happened a few times.
Never has a issue once its running and after 1st start seems no to have the issue again unless it sits over night or more.
I swap ECMs this A.M. did not help.
Could I (hot wire the coil) just run 12v to input of the coil to force spark?
Was also thinking maybe getting another CPS maybe new one was faulty?
Put a face to the crime