Before replacing your ECM first check to see if you have power to the ECM. Most likely that is your problem.http://cliff.hostkansas.com...ctrical-Diagrams.pdf
Check pins 10 and 15 WHITE to make sure you have +12v.
Key on check pin 16 for +12.
If you are interested I can send you an 84 used ECM for 45.80 shipped USPS Prioritty mail. email or paypal me at firstname.lastname@example.org if you are interested. If you get it to me before 3P Central I will get it in today's outgoing mail.
[This message has been edited by phonedawgz (edited 07-14-2014).]