Looking for ECU for 92' all-trac turbo w/ 3stge motor. Manifold heat shorted my O2 heater wires out and now check engine light is on. Or if anyone has done this before, how did you fix it? I don't see any fuses and the heater in my 4-wire O2 sensor is not getting any voltage. Dealer took about 4 hrs and finally said that its my ECU. Any friends/contacts would be greatly appreciated. I believe the part # is 91661-2b290.