ok, so i'm throwing a code 13. atmospheric pressure sensor. i checked the voltage at the plug like my service manual says and it reads a steady 5v. whats the chance of just replacing the sensor with a used one from another integra and solving the problems. also, a myth that i've heard but cant find any evidence to support. 90 integra's had external (not in car) barametric pressure sensor, but 91's had internal (in ECU). With that said, (if its true) would replacing the ECU (90) with an ECU from a 91 Integra fix this? im throwing two other codes. the car is OBD0, its a 90 integra. code 1 is an O2 sensor, I know this. im going to replace it. the next weird code is code 6, engine coolant temp. so, its plugged in and shit, but im getting hte code. do i, 1) replace the sensor or 2) reaplce the plug, sensor and make sure its a solid connection. just looking for clearification. no smartasses needed. THANKS.