A few weeks ago I posted a problem I had where the motor died while driving, and took with it all the accessories that work through the ignition (windows etc.). Turned out to be a fusible link which I replaced with a 50 amp maxi fuse. It looked like the insulation on the fusible link had split and the wiring corroded. So I thought nothing more of it. It's been driving, oh about 3 - 4 weeks with no problem.
However today it did exactly the same thing. I pull over (good reason I spend most of my time in the curb lane) and check the new wire. The 50 amp fuse had blown. Being resourceful I had bought a spare fuse so I plugged that in. Everything worked fine, windows, dash lights, gauges, until I started the motor. I noticed that immediately the ammeter dropped right down to the bottom of the guage (less than 8) and the motor ran fine for 10 secs before the new fuse blew. (At least this time I had the foresight to roll up the window so that I did not have to abandon her to her fate). Did I mention resourceful? I had yet another fuse. Plugged this in, turned her on, ammeter sank, shut her off before the fuse could blow. Since I can't drive home in 6 second spurts, she was rendered hors d'combat right there. And there she remains until I can sort this out.
So does anyone know why the fuse will remain fine until the engine actually starts. Gotta be a short I imagine, but I do not know what extra current draws occur when the motor is running as opposed to simply having the ignition fully on but not running. Coil I guess but any other ideas?
THanks
Peter
However today it did exactly the same thing. I pull over (good reason I spend most of my time in the curb lane) and check the new wire. The 50 amp fuse had blown. Being resourceful I had bought a spare fuse so I plugged that in. Everything worked fine, windows, dash lights, gauges, until I started the motor. I noticed that immediately the ammeter dropped right down to the bottom of the guage (less than 8) and the motor ran fine for 10 secs before the new fuse blew. (At least this time I had the foresight to roll up the window so that I did not have to abandon her to her fate). Did I mention resourceful? I had yet another fuse. Plugged this in, turned her on, ammeter sank, shut her off before the fuse could blow. Since I can't drive home in 6 second spurts, she was rendered hors d'combat right there. And there she remains until I can sort this out.
So does anyone know why the fuse will remain fine until the engine actually starts. Gotta be a short I imagine, but I do not know what extra current draws occur when the motor is running as opposed to simply having the ignition fully on but not running. Coil I guess but any other ideas?
THanks
Peter
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