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Hey guys, this is my first post. I own a 91 Galant VR4 and I am too having an idle surge problem. Mine happens whenever I press in the clutch. I will be driving and when I press in the clutch, it will rev to 4K rpm. This does it in any gear and it is making me MAD!!! I had installed a ACT 2100 this past summer, all caps replaced in my ECU, K&N filter, and I removed the wastegate selenoid. I hear it could be many things, ISC, FIAV, throttle body, or a warped flywheel. Any suggestions?
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