Thanks for checking out my problem.
When I leave the key in the on postion I will
hear the clicking from the relay box after a period of time then the check engine light will come on.
So the ECM must not be getting all the inputs it needs. I have never checked codes before. Would I need a scan tool?
OR do you read them from counting flash dash lights
after a sequence is entered? If I need a scan tool I
can call in a favor and get a hold of one.

Thanks
Max