Yamaha F250 High Idle Help ........

[Who's your daddy]

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[Who's your daddy]

Making sure all codes were cleared out, I ran it for a few minutes and ran a diagnostic and this code popped up.

[boscoe99]

Imagine that!

[Who's your daddy]

Well I went to the boat and located the cam position sensor. It looks like the mechanic leftmoff the wiring connector to it because it was hanging down laying on the bottom of the inner pan. I looked at it and it was corroded pretty bad. Bad enough for the wires to just pull out of the connector, see pictures. I pulled out the sensor and looked at the wiring input. It also was corroded. I have ordered a new cam position sensor.

Where can I find the wiring harness for the sensor at?

[Who's your daddy]

Forward pic of the connector

[99yam40]

I believe you will need the Whole motor harness, unless you can find something from a dead motor to splice back in.

But you might find and order the proper connector from Japan if you are lucky, but will still need to cut and splice back in

[boscoe99]

SMHW

Very odd to have that much corrosion in a connector that sits in a high and dry spot. You might want to inspect all of the other connectors as well.

[99yam40]

I agree, needs to find out where all of that salt water is getting in unless he has lots of spray being sucked in at speed

[panasonic]

Well I went to the boat and located the cam position sensor. It looks like the mechanic leftmoff the wiring connector to it because it was hanging down laying on the bottom of the inner pan. I looked at it and it was corroded pretty bad. Bad enough for the wires to just pull out of the connector, see pictures. I pulled out the sensor and looked at the wiring input. It also was corroded. I have ordered a new cam position sensor.

Where can I find the wiring harness for the sensor at?

That's what I call a hard snag ( definite problem) which is a good thing. Now you can get on with the repair...

[dray0151]

That's what I call a hard snag ( definite problem) which is a good thing. Now you can get on with the repair...

Use the draino!

[boscoe99]

Would be nice to know if the motor has the optional speed sensor or water pressure sensor installed. They are known to allow water to get from the water side to the electrics side.

[Who's your daddy]

Thanks everyone. I have the cam sensor ordered as well as the connector. I will let you know if it fixes the problem.

I believe the issue with water getting into the cowling is the k-planes on my Contender go pretty far down and when I use them , they splash a lot of water on the lower side of the cowling allowing water to splash in through there.

[99yam40]

not sure water splashed on lower cowling would get up to the to of motor where that cam sensor is located.

but pay attention to what Bosco was refering to on water traveling up fom some sensors when they leak