So i sank the crossfire yesterday waterskipping. It was in the water probably 2-3 minutes. Got is running again, and ran fine for about 20 miles. Later that day, I started it back up, and am getting 7 check engine light flashes. This indicates failure in exhaust temp sensor. Any thoughts on why this is happening, or if there is anything about the sensor that would make it fail due to going under. I would think if that was the issue, I would have been getting the warning light right after we fired it back up after it sunk. Help is greaty appreciated!

Well when I sank my F7 a few years ago my warning lights were lighing up and the sled ran like a bag of shit.....I am sure it had something to do with the sensors being frozen and not providing the proper info to the ECU because of this.
Put the sled in the heated garage, removed the ECU, disconnected all wiring harnesses, made sure all the water/ ice was gone from connections, etc, drained and filled the chain case a few times, dryed the seat.
Once all was thoroughly thawed sled ran fine and still runs fine.

oops

Hey man, electronics generally can get wet when not powered up. If you dry them they will usually work fine.

I would take and dry everything out. I didnt look at my ECU on my Xfire but see if you can open up the ECU and dry it with a hair dryer. Then unplug each and every electrical connection. Spray them with electrical connector cleaner and let them dry. The sensor failure could be just showing; due to out of an out of spec range condition and water in the wiring conenctions will do that. Lets hope the ecu is not blown. But seeing as how it is running and bringing up codes, you are probably gonna be okay.

WNYxfire7

Mike

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It looks like he isn't riding now.

Can you exlpain what happened to cause you to sink

9 times outa 10 the belt slipping/getting wet will sink you.

I think the ECU is sealed. More likely you got a short or bad connection to one of the sensors. Unplug all connections clean and put dielectric grease in them and replug togethor. Like said above to some time in a heated garage or shop would do it some good. Make sure you grease all the suspension components to that goes for if you sink it or not you would be surprised how much water gets in there.

It turns out the plug for the exhaust sensor fell out. Plugged it back in and good to go. Ill tell you why i sunk. Not enough speed + paddle track loading tunnel with water + water on belt = going swimming.