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I have a 2015 g23 with the PCM ZR 409. When I start the boat it goes straight to 1800-2000 rpms and stays at this rpm level. I let it run for 15 minutes and it never idle down. I also tried putting it in neutral and revving it a bit to try and get it to come down but always comes back to 1800-2000 rpms. Might be thinking it is the throttle position sensor. Anyway to clean this sensor or test it to see if its faulty before I start throwing parts at it? Also should I look at anything else that could cause this problem? Thanks in advance!
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