2003 Explorer Noisy Alternator

[mike-f]

Don't it take like 2-3 minutes for the fan clutch to loosen up after start up? I am wondering if you're hearing your fan clutch...

No, whether the sound is occurring or not, I can hear when the fan clutch kicks in and there is no change other than the fan speed.

 

[TechGuru]

No, whether the sound is occurring or not, I can hear when the fan clutch kicks in and there is no change other than the fan speed.

I think at this point investing in this may help:

http://www.harborfreight.com/mechanics-stethoscope-69913.html