SomeYeahoo wrote:
What does it mean exactly to "flash the PCM?"
You reference fuel pressure sensor with your derate. Not sure where you came up with that. There is a known issue relating to the tolerances of the exhaust temperature sensor. Typically at idle, it will pop the engine warning light. If you take the boat in, the dealer will "Flash the ECM". That simply means, hook into the ECM (Electronic Control Module) via internet and download new programming that will "loosen" the tolerances for the exhaust temp sensor and it is fixed.
On a side note, I have a gremlin in my boat as well...I have a rattle under the floor in the driver area. Has been to dealer 3x and cant find it. It is being sent to Malibu in Loudon for review, correction. My concern is some wingnut has left a part or tool in a difficult to reach area. I have steadily removed trash from the boat in the first year...items left from assembly. Malibu could stand to tighten up on quality control, IMO. No need to leave screws and nuts in the bottom of a boat post assembly...just sloppy.