F150XA Electrical Issues

[slads5874974]

What do the rest of the electrics look like?

Fuse/relay panel?

Stator?

Starter motor?

How long was the motor under water?

Other electrical actually looks pretty good. I have been going through all the other connections, cleaning and applying DE grease where needed (not directly to the connections).
I replaced the fuse/relay panel (box), fuses and relays also.
I replaced the Starter.
Flywheel pulled, stator inspected and in good condition.

Not sure how long the motor was under water, or if it actually was submerged for a significant amount of time at all. I don't have the answer for that. But I get your question and see where you are going with that question. It's obvious that there was something going on with a water incident some point.

Thanks for the help and questions.

[slads5874974]

I don't see any tabs missing.
the harness diagram will show which wires are joined together.
now ya gotta make a choice.
repair what you have or bust out 1/2 a boat unit.

Tough call. I am thinking the new wire harness would be the best choice due to risk of being out on the water and something else going wrong with the harness. It's just not the ideal choice for my wallet.

I would like to try to repair it as-is to save some money. But I would think that I might be bring on more risk with burning out my electrical units such as the ECU or sensors if I wire the items incorrectly. Fuse box might save me there though?

Also, Are you referring to the electrical diagram at the end of the Service Manual for the harness?

Again many thanks.

[slads5874974]

This is an older thread, but I figured I would provide an update.

The motor is running well. I replaced the entire Wire harness and everything is operational.

I do have one remaining item in the YDS listed as an error 39 (oil pressure Sensor). Oil level is good in the outboard and there is no overheating or anything like that. But I still need to be careful and make sure the sensor get replaced. I attached the Screen shot of the YDS report.



https://postimg.org/image/u4wz8pcap/

https://s12.postimg.org/xx52uy7sd/IMG_0466.jpg

Any suggestions? Do you think its the sensor or truly an oil pressure issue. any thoughts on testing the sensor or just replacing outright?

Thanks again.

[fairdeal]

127 psi !!

I don't think I ever played with the oil pressure sensor with YDS -

but I imagine you will get continuous updated readings with key on, engine off

I would hook up the YDS,
unscrew the pressure sensor
and Tee it up to regulated compressed air and a gauge

see what it is reporting electrically as you supply a known pressure

they are darn pricey things to simply replace without being sure its bad

[boscoe99]

Either test the sensor as fairdeal suggests and/or actually measure the oil pressure using a mechanical gauge plumbed to the system.

If testing the sensor the electrical output will vary as a function of pressure applied. With an input voltage of 4.75 ~ 5.25 volts the output should be

2.5 volts at 56.8 psi

4.5 volts at 113.7 psi

127 psi would indicate the output voltage almost exceeds the input voltage!

[99yam40]

does it alarm on too high also(out of the normal mapped pressures for RPM)

[fairdeal]

does it alarm on too high also(out of the normal mapped pressures for RPM)

that appears to be what he is showing a few posts up (red is alarm condition)



when I was "fooling with" my temperature inputs on the F225 -
saw several times that the ECU is programmed to alarm for some"implausible" inputs

[99yam40]

so it looks like anything over 122 psi would set off the alarm maybe?
or is it anything below 122 sets the alarm?

[rodbolt17]

at 127 PSI you should get an audible.
now would be the time to check the 5V ref and ground for the sensor.
that sensor is about 1/4 of a boat unit.
if it has been underwater it may fail.
does not matter if it was under 1 min or two days.
kinda like being "kinda" pregnant.

[slads5874974]

kinda like being "kinda" pregnant.

HAH! Got it. Thanks.

No alarms and I will check the 5V ref and ground for the sensor.

Thanks again everyone! Really Appreciate the responses. I will follow up.