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I have a 2002 F115 4stroke Yamaha. It staggers when moving the throttle from idle to fast. I have YDS software and see the ISC is about 30% when warmed up and idling. What should it be? Is that like a choke? Is it 30% open or closed and does that change the fuel to air mixture? Help please.
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To my knowledge, the ISC simply controls the idle speed.
It doesn't change F/A ratio's. IDK what the percentage ratio is.
When you shut off the engine, you should hear it "rattling" as it re-sets. If it gets real hot, its likely failing..Scott
1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR -
the ISC simply controls the amount of air at idle speeds.
its also simply a request from the ECU.
the ECU does not and cannot monitor the physical position of said valve.
that's where the tool on the neck has to work with the laptop.Comment
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ok. What do you think might cause that stagger when accelerating from idle to fast? It idles smooth. Thanks.Comment
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