my 89 3.1 will not even start now, i found 4 wires under the radiator in the main wiring harness, they had been cut and eventually corroded, a couple of them were not even connected, well i fixed them and it still wont start. i think it might be the crankshaft position sensor? i tested the MAP it was ok, the ICM was replaced before, and my coil packs are ok. i'm not sure what it is, any help would be appreciated