What would make sub woofer in a Ford Expedition Eddie Bauer go out?
First, check your fuse. If you are not getting power to the amp,
that is probably the problem. If not the fuse, probably the
Mine went out a couple of years ago and it ended up being the
amplifier, which is located just in front of the subwoofer. It's
only a 30 or 40 watt amp, but of course none of the aftermarket
amps will just plug in without mods. Luckily I found a friend who
knew a guy at the local Ford stealership and got a new replacement
for about 75 bucks!
Be careful of trying to buy amps at junkyards. A lot of the
junkyard amps have gotten wet and no longer work.