Penta jumping into gear

[Mr Proach]

we've just experienced an instance of the port engine (Volvo Penta TAMD 122P) engaging the gearbox without a demand from the engine control lever. This is clearly quite concerning, what might have caused this to happen? electrical or hydraulic?

 

[Mr Proach]

Bueller........Bueller...........anyone?

 

[Boat2016]

Was yours one that was affected by the wiring in the plug? It was a few years ago now but I had a boat with Volvo EDC engines recalled and a mod made, they were 70 something so smaller (can't remember exact model) does this sound familiar to anyone else? Have you tried a serial number check with your dealer to see if anything shows up?

 

[volvopaul]

Was yours one that was affected by the wiring in the plug? It was a few years ago now but I had a boat with Volvo EDC engines recalled and a mod made, they were 70 something so smaller (can't remember exact model) does this sound familiar to anyone else? Have you tried a serial number check with your dealer to see if anything shows up?

That's was the 74/75 p series which required a wiring mod on the cables to the reverse gear solenoid.

 

[Boat2016]

That's was the 74/75 p series which required a wiring mod on the cables to the reverse gear solenoid.

That sounds familiar, was it the same controls that were used on the 122 ?

 

[Mr Proach]

It's turned out that the yacht controller was badly connected directly to the gearbox, a loose cable was shorting and causing the jump into gear. Many thanks for the replies