Picture TUT ULTIMATE ISC FIX! 1 catch! [Archive] - Toyota MR2 Message Board

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DISCLAMER: IM NOT RESPONSIBLE for anything you do to your car. This is a guide that you can choose to follow if you want, but do it at your own risk. Im not responsible for injuries, damage, or anything that happens in the process of following this tutorial, Thanks. I will start with a little background information and ways to check if your isc valve is bad. Well, when you start your car, your idle shoots up, goes down sometimes, doesnt other times, contsantly inconsistant and high.