fusible link in subaru

[osote]

what does the fusible link in a 91 subaru legacy wagon do?

it is drawing on the battery causing the battery to run down
everynight uhnless i disconnect this fuse and reconnect it before
driving every day...

 

[Edward Hayes]

A fusible link is just that "a main fuse" that protects the main wiring
system in case of a major system short. It will not cause battery drain. You
have a current leak somewhere else. Since the battery stays charged when
disconnected then the battery seems ok. First check that ALL switches are
turned off in the car. I would then use a volt meter to check each of the
fused circuits to find which one is drawing current when the engine is off.
ed

 

[Dick C]

wrote in rec.autos.tech

what does the fusible link in a 91 subaru legacy wagon do?

it is drawing on the battery causing the battery to run down
everynight uhnless i disconnect this fuse and reconnect it before
driving every day...

A fusible link is not going to be drawing the battery down. It is
just a high amperage fuse in a wire, placed there to protect the
equiptment from something with a very high current draw. All it
connects is one part of the wire to the next part. Something else
is causing your battery to lose voltage. What you need to do is to
get something that will indicate current flow, such as an ammeter,
or a test light connected between the negative terminal and the ground
cable. And then start pulling fuses until the current drops down to
almost nothing. Then you will have isolated the circuit. From there
start testing everything on the circuit to see what is not shutting
off when the car is off.
One of the most common things is the trunk light. Find the switch that
shuts it off, and push it in to see if the light goes off. If not you
probably have your culprit.

--
Dick #1349
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
~Benjamin Franklin

Home Page: dickcr.iwarp.com
email: (e-mail address removed)

 

[sammmm]

the fuse isn't the problem.
there is a load downstream of the fuse.
an engine lamp? a glove box lamp? something of that sort is the culprit.
it can be frustrating to find the problem like this.
good luck, sam

 

[osote]

I don't think it's a fuse after all as I pulled the heater and fan
fuses and the damned heater fan still came on even when in the off
position. Also Subaru dealer said the fusible link goes to a lot of
different things so it could be anything and wanted to charge me a
small fortune just to begin trouble shooting where the short is. I'm
not giving up! With this newsgroup's help and my determination I will
do my best to avoid sinking any more money into this car!

Should I just pull the wires from under the dashboard that go to the
heater and live without a heater?

 

[Dick C]

wrote in rec.autos.tech

I don't think it's a fuse after all as I pulled the heater and fan
fuses and the damned heater fan still came on even when in the off
position. Also Subaru dealer said the fusible link goes to a lot of
different things so it could be anything and wanted to charge me a
small fortune just to begin trouble shooting where the short is. I'm
not giving up! With this newsgroup's help and my determination I will
do my best to avoid sinking any more money into this car!

Should I just pull the wires from under the dashboard that go to the
heater and live without a heater?

Try replacing the switch. That is probably your problem. Or better yet,
get a wiring diagram and a test light and find out exactly what part
is bad by tracing wires.

--
Dick #1349
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
~Benjamin Franklin

Home Page: dickcr.iwarp.com
email: (e-mail address removed)