So today I played with that lonely little fuse on the driver side in the engine bay on or near the firewall (hanging off the pair of relays on a cable tie).
Its a 20A blade fuse.
I say played because I read elsewhere it is a way to kill ignition - without the fuse the donk will crank but not fire up.
I removed the fuse and sure enough it will crank but not fire up.
The fuse holder is exposed to the elements, not directly, but just like the front plastic blinker and parker lenses, water and dust find their way in because its a cheap and nasty plasticy design that probably costs them 20c.
I checked the fuse for corrosion and made a note that I should renew it seeing how absolutely vital it is and how manky the fuse blades were. Could be ten years old who knows.
The donk was fine before this. Perfect.
So I put the fuse back and... the donk wouldn't fire up... it was just cranking. Oh no... what have I done? Maybe I spiked or upset the delicate engine computer up behind the dash? No, the Perentie is pre-engine management module thankfully. Very thankfully.
So I pulled the manky 20A fuse and put in a new 30A fuse I happened to have... and the engine then fired straight away.
Members should check this lonely engine side firewall fuse... for the sake of 'Murphy's Law' keep a few spare fuses in the vehicle just in case. These are spares that don't take up much room, but get caught without one when you need it...