The harness is wired wrong. I have changed wire from pin 28 to pinhole 63 on the ecu. Now its reading correctly, I finally have air temp! lol. I have been trying to figure this out for while, but I think I have figured some of it. It is 96-98 wiring harness but a 95 ecu. Im not sure if any other wiring is jacked up. All I have left is a code for p1400 and sometimes code p0136 comes on too, but with the egr deleted I cant figure out how to get that code off(p1400), I do have the egr solenoid valve. I tried hooking up vacuum line to it as well and hooked it up to the harness just so i could see if i could get it even, remotely close to keeping that cel off, but no luck. I have considered of getting a 96-98 ecu but will more codes show up when I hook that one up??? The car is still all stock both O2 sensors are 3 wire if that helps, I also use a scanner tool called Blue driver. It tells me the code is somthing else, it states p1400 comes back as "Sub Throttle Position Sensor Circuit.". I have no idea what to do
I have images of both ecu wiring diagrams which I have been using to compare 95 to 96-98 wiring as well.