So I swapped a obd2 97 ls in my 91 hatch. I'm running obd1 with a jumper harness, and im throwing a CEL 10 for Intake Air Temp sensor. Wich I have changed and rewired...still no luck. I had a 94 gsr swap in there before and I usto throw the same CEL but I rewired it to the ECU and it never threw a CEL 10 again. Any ideas? Also since im running a obd2 ls, I have the manifold with a sensor on top of the intake mani, wich isn't connected because im running a obd1 ls ecu wich doens't look for that sensor..but could that be a problem?

Please help.

 

It could be your wiring sensor or the ECU its self.