OK, I'm assuming you really do mean the ECC, since that'* the title of the thread (not ECL).
In many cases, the flashing ECC will turn off itself after a few days and trip cycles. If everything else works fine and you are sure that you have checked to ensure everything is tight and in it'* correct place, then just wait and see.
On the other hand, what are you saying is loose that falls off regularly, the Fuse Relay Center on the FOD (firewall)? If that'* the case, then you should look into fastening that down to prevent future problems. That is not a normal occurance, IMO.
Mike: 1997 SE w/ 183K, aka White Horse
, Gutted Airbox w/K&N, drilled 180* t-stat, tint all around, clear corners w/SilverStars, "PONTIAC" light up tail, PEMs, NGK TR55s