200hp efi throttle positioning sensor.

[gamblerbob65]

serial # 06938619
1999 200hp efi
My throttle positioning sensor alarm is sounding off. Replaced it with a used one. Same problem. Is there a way to test the sensor.
Or is there something else I should check?
Thanks.

[silvertalon]

Not aware of a TPI alarm. If you are getting a steady tone it will be an overheat alarm. If it is a beeping tone, it is a low oil, motion sensor or oil warning module failure. When ever you change a TPI you must have the TPI test harness hooked up to a digital meter and must disconnect the port side cyl head temp sensor wires in order to adjust it to spec. .200-.300 ohms at idle position. The desired setting is .250 ohms. They can be difficult to adjust.

[gamblerbob65]

Thanks for the advice. Found a chart online that said it was TPS. alarm. It is a continues beep beep beep beep. nonstop when I try to start eng.
I may be in over my head. lol.

[EuropeanAM]

Don't rely on that chart as there are several items that can cause that warning.

Moving thread to the 2.5L Forum for you.

[gamblerbob65]

My boat is in the shop. I'll update when they find the problem.

Thanks.