I have a 93 del sol so with 97 y8 motor... it is a obd 1 car with obd1 ecu and obd2 motor and harness.... they ran a wire from an extra plug to the right side tower plugs.. i thought that it was them trying to bridge the iacv but today i unplugged it and nothing happened at all... it idles between 100 and 200rpm if you try to start the car on a upward incline it wont start you have to give it gas any ideas????

Left Tower plug




Right tower plug