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Throttle Position Sensor

Oakley21

New member
I have a 2002 Mercury 225hp, recently started my outboard and rev’s at like 3000rpm’s, this has never happened before just started overnight.. when I unplug the TPS it idles at normal range but as soon as I plug it back in it rev’s back up… So is it the TPS or could it be the computer?
 
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