Ford Ranger 2.3 icm changed without disconnecting the battery. Can do what?

soms1soms1 Member Posts: 1
edited August 2014 in Ford

1994 2.3 Ford ranger. Changed icm to hopefully fix a code224 or coil connection problem and after changing, absolutely no fire. Could I havedamaged the CKP sensor? ECM? BECAUSE I DIDN'T DISCONNECT THE DANGBATTERY

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