Limp Mode Issue, Need advise

[Scotsmn30]

Ok, so found a 58B30 computer and got it all plugged in and it started with very high idle and the CEL came on AGAIN..

So check the codes and now it is flashing 14.. Ok cool, I can replace the ECT. Ran to local part store, picked one up, put it in.. Still 14. Ugghh

So checked to see if the resistance on the new ECT was in spec, and no issue there.. So now I have to ask did I get a bad ECU.. 

Any advise. Really would like to get this little guy running as love them.. but this is getting frustrating.