[DeTomaso] cooling fan blowing fuse

[doug351c]

Brian,

What amp rating fuse are you using?  And how fast is it blowing?  My info
shows it should be a 15A for fuse #11 on a 1971.  Since you have no trouble
using fuse 11 and its relay to drive the other fan, that says that that
portion of the wiring is OK.  To see if the motor is drawing too much
current, directly connect the fan to the battery through a 15A fuse.  Be
sure to connect both the hot and the ground wire in this test or the fan
won't run.  If the fuse blows, try a 20A fuse.  If the 20A fuse doesn't
blow, the Pantera's fan wiring is good for using a 20A fuse so go ahead an
use it.  If the 20A fuse blows, get a new fan motor.

Doug Braun
blue 73L #5505

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Brian Hill
Sent: Saturday, October 30, 2010 4:00 PM
To: SCPOCA at yahoogroups.com; detomaso at realbig.com
Subject: [DeTomaso] cooling fan blowing fuse


I have a 71 model early.  Has manual cooling fan switch.  Recently I hit the
switch and fuse #11 blows disabling the manual fan.  I tried checking the
fan
operation by using some jumper wires (recommended by Dave Bell) and the fan
runs
like a champ.  does not bind or spin slowly.  So I tried switching fans,
plugged
in the other fan to the harness for the manual and I hit the switch.....fuse
did
not blow.  Tried it multiple times and it works fine.


Question:  is the fan simply drawing too many amps thus blowing the fuse but
still operational?


Brian
01642