5 hours ago, barefootrocker said:

@BlindSquirrel that's what I was looking for, thank you!

Is yours actually bad?  I would just clean it (and the rest of the throttle body) if you are having idle problems.

I've spent some time searching the forums and have followed really cool projects from really smart people but I haven't seen this discussion.

I have a 2007 Malibu LSV 247 with a Medallion MMDC v.3.4 (7021-00009-01 01/24/07 REV C). I'd like to replace the depth transducer with a unit from Humminbird, Lowrance or Garmin (chartplotter) all which can output NMEA 2K. I'd like to take the depth, air and water temp from the NMEA network and display the data on the gauges and screens driven by the Medallion. The OEM depth transducer appears to be a version of the Lowrance LSM-3. The NMEA format seems well documented, if someone understood or has documentation of the signalling output from the OEM depth unit to the Medallion it seems like a pretty simple conversion for a small Arduino.

Thoughts or help appreciated.

Thanks

18 hours ago, GK02 said:

Seems like it would have been some easy money to make on their end.

If they are like any dealer I've dealt with, they have zero need to go out looking for more work. Every dealer I've ever dealt with has had a pipeline of boats to be serviced, and have long wait times to get a boat in for work.

Wait til you need to get into your local dealer for a problem during the season and they tell you that they can't service boats that they didn't sell. For obvious reasons, I wanted to service my boat at a dealer 2 hours in the direction of the lake, versus by the dealer I bought it from that was 2+ hours the wrong way. I was told that it was a Malibu policy to protect the inherent service revenue that a dealer can count on from selling one. It was a while ago, but I had to jump thru hoops to get it done.

Enjoy the new boat!

I would recommend a compression test, check the spark plugs, and check the fuel pressure.  Fuel pressure should be 55-62 PSI.

Another thing that cause cause the problem you described is a "slow" actuator.  Assuming all of the connections for the circuits are clean and tight, an internal failure of the surf gate actuator can prevent it from fully retracting in the allotted 9 seconds.  If the actuator can't fully retract in one 9 second cycle, then there will be an alarm.  There also needs to be at least 1/2" gap between the surfgate paddle and the swim platform when it is fully retracted.  If the surfgate contacts the platform, it may prevent the actuator from retracting.