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2003 DT 225 hp TPS switch maybe??

jake jacobellis

New member
Engine will start fine and run like a cat on fire for about 5 to 10 min, then the RPMs start to fall off, If you increase the throttle it will start to suck to much air and not enough fuel. Discovered yesterday if I turn the key off for a second and then turn it on again, it will reset whatever is going wrong and run great for 10 min or so, and then continue doing the same thing.
Im thinking my TPS switch is the cause and by switching the motor off and on again resets the system again and then seems to fade out again.(maybe corrosion or something inside the switch).
But at 145.00 for the part, I was hopeing maybe someone had the same issue and can confirm it for me, or at least get a little closer.
I know the next step from there is the ECU, but I hope not...
Any help appreciated
(Ive had the engine on the boat since 2003 and has not ever given me a problem and has 800 - 900 hours on her
 
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