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I know the center wire needs 12 volts. It had a 12 volt source ran. The car runs the same with or without the 12 volts, which means there is more than just that center wire issue. Subaru wanted $640 for the full harness! I'll try my hand at wiring. Does anyone know what the othervtwo wires run to? D...

I've traced things down to a wiring issue. The center yellow wire going to the IAC valve had been cut and a new wire was run to a constant 12 volt source. I switched it back to the stock wire to see what it did. Same result. The stock wire does not have a voltage with the ignition on. It should have...

I just confirmed the TPS is adjusted to factory settings. I also changed the coolant temp sensor as a possibility. It's still idling at 2500.

I used brake cleaner to clean the IAC. I've tried 4 different top sensors on top. I couldn't get any of them to adjust correctly. The vacuum reading was taken with the IAC unplugged. Unplugged, and adjusted all the way to the passenger side the car idles perfectly but has a check engine light obviou...

I have not set the TPS to those specs. I will do that soon. I did clean the IAC valve. I've checked for vacuum leaks and can't find any culprits. The vacuum at idle holds at 15 inHg. There is no check engine light. And there is not a screw on the top of the throttle body. Any other thoughts while I'...

Ok, I've searched and read every idle topic on here. I still can't figure this out. I've tried multiple TPS's, two different idle control valves, a MAS off a perfectly running car, replaced most hoses with tight silicon, multiple throttle body assemblies, and I'm still stumped. The car will start an...