Vessel View Fault HELP Transmission Overtemp!

That on top is your temp sending unit. Bingo.

Just pull the hoses off both ends of the cooler. The holes need to be clean and clear. Use a flashlight on one end and look down the other.
There will be nearly zero water in that cooler. The system is self draining after about a half hour after the engine ran. Tell us what you find. If not plugged with something, then it's a bad sensor. Either way cheap fix.

PS, all the raw water self drains out the shaft dripless.



Perfect, I'm going to head to the boat this evening to see what I find.

I will post my results/pictures later today.

Thank you for your help!
 
One more thing, the tranny filter should be inspected too. Its located on the port side. There is an allenrench bolt on the top. Turn it until the thump hits far counter, then pull the cap off. It's an oring holding it in place, so you may need to pry it off gently. Remember what the top side is when lifting the filter out. Inspect it closely, run a magnet inside along the edges. Check for any metallic which is bad. Clean with some diesel or thinner and dry 100%. Replace and be sure the oring seats before you tighten back the thumb the otherway.

Here is what metallic looks like on a magnet.


I believe I saw this while crawling around down there last night. The top was black with the allen wrench bolt in the middle.
 
That on top is your temp sending unit. Bingo.

Just pull the hoses off both ends of the cooler. The holes need to be clean and clear. Use a flashlight on one end and look down the other.
There will be nearly zero water in that cooler. The system is self draining after about a half hour after the engine ran. Tell us what you find. If not plugged with something, then it's a bad sensor. Either way cheap fix.

PS, all the raw water self drains out the shaft dripless.


Besides some slime both ends were clear .
Is the second picture the tranny filter?
 

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One more thing, the tranny filter should be inspected too. Its located on the port side. There is an allenrench bolt on the top. Turn it until the thump hits far counter, then pull the cap off. It's an oring holding it in place, so you may need to pry it off gently. Remember what the top side is when lifting the filter out. Inspect it closely, run a magnet inside along the edges. Check for any metallic which is bad. Clean with some diesel or thinner and dry 100%. Replace and be sure the oring seats before you tighten back the thumb the otherway.

Here is what metallic looks like on a magnet.



Here’s a picture of the tranny filter. I did not have a magnet/thinner to clean. It looked clean to me.
 

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That on top is your temp sending unit. Bingo.

Just pull the hoses off both ends of the cooler. The holes need to be clean and clear. Use a flashlight on one end and look down the other.
There will be nearly zero water in that cooler. The system is self draining after about a half hour after the engine ran. Tell us what you find. If not plugged with something, then it's a bad sensor. Either way cheap fix.

PS, all the raw water self drains out the shaft dripless.




Do you guys think it’s a bad sensor?

Here are what my gauges read when it went off...see picture


Also guys on my dock said it could be my impellers or the knock sensor, do you think any of these could the the cause?
 
What did the inside of the cooler look like when you had it apart?
 
What did the inside of the cooler look like when you had it apart?



Clean nothing clogged. A bit slimy but that’s it.
 
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Besides some slime both ends were clear .
Is the second picture the tranny filter?
What about the cooler tubes? Did you inspect each one with a flashlight? That's where crap collects, especially pieces of old impellars.
 
What about the cooler tubes? Did you inspect each one with a flashlight? That's where crap collects, especially pieces of old impellars.


Here’s what each side looked like, there was no visible debris at least to my eye.
 

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Yours look way better than mine did. Almost all the holes on mine had some sort of deposits stuck in them.
 
Yours look way better than mine did. Almost all the holes on mine had some sort of deposits stuck in them.


Do you think its a bad sensor then?
 
Do you think its a bad sensor then?
IMO you are still in diagnostic mode. You can try swapping in a new sensor or scan it when its hot. Scanning with an Infrared gun when the problem happens will tell you the true temperature.
 
IMO you are still in diagnostic mode. You can try swapping in a new sensor or scan it when its hot. Scanning with an Infrared gun when the problem happens will tell you the true temperature.


I would agree with you on that.

Do I simply just scan the actual sensor with an IR temp gun?

And is this the sensor I would be scanning?

Thanks again!
 

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I would scan the brass on the trans hose. If you can see / reach it on the trans itself, scan it there.
 
I would scan the brass on the trans hose. If you can see / reach it on the trans itself, scan it there.


I’m gonna give that a try, hopefully tomorrow or Friday
 
Here’s what each side looked like, there was no visible debris at least to my eye.
You may have done this but I haven't heard this action... can you see thru every tube in the cooler? If so you're good. Even a few plug will increase temp.
 
You may have done this but I haven't heard this action... can you see thru every tube in the cooler? If so you're good. Even a few plug will increase temp.


I cannot actually see through the cooler. How do I flush it out?
 
I cannot actually see through the cooler. How do I flush it out?
Take the cooler off. Use a flashlight to see thru, look from otherside. No light its plugged. Use a fine stiff skinny bottle brush. Copper is soft so no hangers or metal brushes. Then hose it out under water pressure. Like washing your car.
 
Take the cooler off. Use a flashlight to see thru, look from otherside. No light its plugged. Use a fine stiff skinny bottle brush. Copper is soft so no hangers or metal brushes. Then hose it out under water pressure. Like washing your car.


Going to give that a try tomorrow morning. My mechanic was out today to replace the impellers (there were no missing pieces) and a tune up.

He thinks it’s the sensor. Put it on the computer and it’s not telling him much.


Took the boat out this evening and it ran just fine. Alarm went off for about 30 seconds then turn off. 10 minutes later it went off again
 
Going to give that a try tomorrow morning. My mechanic was out today to replace the impellers (there were no missing pieces) and a tune up.

He thinks it’s the sensor. Put it on the computer and it’s not telling him much.


Took the boat out this evening and it ran just fine. Alarm went off for about 30 seconds then turn off. 10 minutes later it went off again
Agree it's the sensor, but those coolers should be checked occasionally.
 

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