'00 Mercury 90hp, 4-Stroke ---Surge at WOT?

frustratedboater

Chief Petty Officer
Joined
Jul 10, 2007
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432
2000 Mercury 90hp, 4-Stroke.
I've noticed a slight surge of hp when I start to back off from wot when operating this today. Also right around that wot, it seemed to be sensitive and shown moments of more power that came and went. Could this be my TPS failing? Is there a known test for the sensor?
 

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