MD22 netural link fuse and stop solenoid

[Peter]

Further on my post on stop solenoid not working and looking at older posts as recommended, I've now think the problem is with the neutral link fuse, this has checked and failed. 2 questions not sure what the fuse actually does and what does it protects and this would probably answer why it failed. Note it only failed after I flitted a new starter motor, whether this was the reason or just coincidence not sure yet, Again if the starter motor any ideas why this would blow the fuse? And secondly apart from using a standard Volvo fuse, am I OK to use as "standard" 55A fuse, which this one is rated for.

Peter

 

[Playtime]

The engine block and saildrive are isolated from battery negative ('earth' or ground) when the engine is not running i.e. most of the time. There is a relay (identified by a 5 in the wiring diagram in the Owners Manual) that connects the negative to the block, through the fuse link you mention (numbered 6), when the 'ignition' is turned on. It allows the glow plugs and stop solenoid to work as they have a ground return rather than a separate wire.

The starter, like the alternator, should be insulated return, and therefore have no effect on the fuse you mention. If yours is not insulated return then the starter would certainly blow the fuse.