I have a 94 civic dx hatchback with a b18a1. My issue is i have an obd2 p75 with conversion harness, it idles high 1600-1700 rpm before and after warm up but drives smooth and pulls good, I recently bought an obd1 pr4 because i was sick of cel's. i plugged in the pr4 and the car idles perfect but the power feels like a single cam and i have a cel. I found the only 2 pin plug to jump and check the codes and when i jump it the cel shuts off and the srs light flashes, however when i plug in the stock automatic p06 and jump the connector the cel flashes and it auto trans related. totally confused by the power loss and not being able to read the cel with either p75 and pr4 ecu....anyone have any ideas?

 

Noone else has had this issue? Well anyone in washington state got an atv they wanna trade for a 94 civic hatch with b18a and b16 trans?