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I have a 2003 f225 that has 900 hours and all updates have been done. the motor runs great but when I pull back on the throttle from full speed to in gear idle the motor bogs and surges for a moment, never cuts off Im just worried this may be a sign of a bigger problem comming and would like to address it before it does. Thanks
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Hard to say where to start. I might start with an inspection of the idle speed control valve. It and the engine control module are in control of the idle RPM.
If the valve is in good working order I might also check to see if the rated fuel pressure is being maintained within specifications. Also, inspect the motor for any signs of an intake manifold leak.
Lot of discussion lately about this bugger. The ISC valve that is. -
ha yes - lots of interest lately. Here's something from another thread
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Have you ever inspected your valve for the presence of carbon/junk that might prevent it from operating correctly?
Damn I wish I had kept all my old Yamaha stuff for play purposes.Comment
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