2005 F-150 Electrical Issue
Randomly my lights, inside and out will dim for aprox 5 seconds and then go
back to normal, the blower will slow also if it's on. I have tried to shut
off everything and this still happens. The dealership has changed the
battery, (because it was a little low??) but can't find anything else wrong.
I notice this more at night, steady highway driving, sometimes at a stop
light, but basically random.
Isn't there something that can be hooked up, say via the cigarette lighter,
to monitor and log the voltage? My dealership says there isn't, but I have a
volt meter that will show peak voltage, you'd think they would have one that
could do low or high voltage. They said the monitor won't log in the
I'd think that there is a problem in the charging system, maybe the
alternator is overloading and shutting down for 5 seconds, so I am going to
battery power then back to alternator. But I don't know, I'm not a auto
mechanic. But I have mentioned it to the service manager, but he says that
if he can't replicate it he doesn't know what else to do.
They have the truck now, overnight, and will probably call me in the morning
to tell me they can't find a problem, but it's still going to be a problem
it has for the last 2 years off and on.