TPS troubleshooting p

Doalldoo

Recruit
Joined
Oct 22, 2017
Messages
1
Throttle position sensor
96 Mariner 225 magnum efi. While testing the TPS I have 4.75 volts going in on the blue and yellow wire. With key on throttle closed I have 3.76 volts coming out on the blue with red wire. (Should be 0) With key on press the throttle slowly volts drop to
.74 volts. (Should increase)
Does this indicate a bad TPS?
 

tommarvin

Ensign
Joined
Nov 22, 2015
Messages
999
I don't know if the TPS is bad, Im not that good. sorry..
Do you have a malfunction indicator light that reads error codes.
www.boatinfo.no/library.
What is the motor doing that makes you think its the TPS.
 
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