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2017 Mercury 150 starts only first time

Joe G Jr

New member
Motor starts fine first time. Will not start again without giving it more throttle. Stalls at low speed nearing dock (under 3mph). Top speed reduced from 55 to 33 mph.

Think it may be throttle position sensor but not sure. Motor shows no codes (at dealership) and shows no faults in Vessel View.

Anyone seen this before? I've seen similar post but no resolution.
 
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