Eagle Talon 95: ECM loses power, works again if you hit it?

I've been trying to figure out why the car keeps cutting off like I hit a killswitch and then realized that when it goes into this "mode" and dies it wont start for another 5-10 minutes. During this time the CEL is not showing at all like the ECU is not powered or communicating. I've already bypassed the ASD relay to see what would happen and worked for awhile but drains battery. So I hotwired the 87 pin from the ignition. Just wanted to rule out this ASD relay. So now cutting off again, no CEL appears until it wants to start and will. Someone told me they had this problem and they just hit the ECM with a wrench and it immediately works again as in not waiting 5-10 minutes. Just like he said the CEL light comes on at key ON position immediately after hitting it. I Googled this up and found very little except one guy saying there's a TAP test and you hit it while car is running to see if it hesitates but this is kind of the opposite. How could hitting the ECM make it work? DOes this mean it's about fried? Car runs great and sometimes will go a few days without any cutoffs and when I start getting the cuttoffs they happen close together over and over. Cleaning the battery terminals and resetting the ECM seems to help this not occur. Also when the ECM does this it erases an trouble codes usually. If new ECM is needed where's most trustworthy place to order one?