Urgent help needed - smart craft errors

[Cincy Aquaholic]

Well, my 290 is about to let me down on the biggest weekend of the year. . Could use some suggestions. Here's the deal.

Boat ran great all last weekend.
Went to launch today and keyed on then put switch into on and immediately got an alarm for water pressure sensor on port motor. Wouldn't start. Indicated "limp mode" but wouldn't fire.

Ran it to the dealer. They replaced water sensor, IAC and ultimately cap and rotor and it fired right up. All seemed well. Launched boat. Started fine idled fine got on plane fine. 1 minute later port motor began to die and then immediately started throwing all kinds of fault codes:

Water pressure sensor.
Fault map.
Fault fuel level.
Fault sensor
Sensor power
Fault TPS
Limphome throttle

All of these are cycling thru the port motor smart craft gauge. And won't fire up. Starboard is fine.

I don't know where to start!?!?

 

[paulswagelock]

Low battery voltage is a possibility.
loose / corroded connection at the main engine plug
loose connection at the gauges

 

[Cincy Aquaholic]

Thanks. I wish that was the issue. Batteries are new and I've been connected to show power. Engine cranks just like normal.

 

[paulswagelock]

Any storms with lightning lately?

 

[scoflaw]

Agree, check all connections first

Have ecm read with the scan tool.

Swap ecms

 

[Cincy Aquaholic]

They are suggesting coil now. I'm not convinced. Seemed more like a fuel pump than that. Lightning? Hmm yes but not convinced it was that. Will ask about ecm.

 

[scoflaw]

Fuel pump isn't going to put your smartcraft into that mode.

 

[FootballFan]

I would lean towards ECM issue.

 

[Cincy Aquaholic]

Coil it is!! Replaced and running great. Thank god!!! Prayers answered.

 

[scoflaw]

Glad you got it running. There's got to be more to this story. Did he give you an explanation why he suspected the coil ?

 

[Cincy Aquaholic]

Diagnostics. Testing to see if was getting spark at the coil. When they installed cap and rotor Thursday it did. But probably because by then the coils had cooled down. But once it would get hot it shut down.