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Old 11-06-2017, 05:48 AM   #2
78F350
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Join Date: Jul 2014
Location: Oklahoma
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Quote:
Originally Posted by Twin headlight Ernie View Post
... only happens during a cold startup, lasts about 30 to 40 seconds and then fades away. It's not very loud and appears to be coming from the right upper front side of the motor. My first thought was the belt but I pulled it and greased the three idlers while I was there. Still making the same noise. ...
My first guess is alternator.


Also starter comes to mind, but that is usually short term noise, 10 seconds or less.


There's lots of info here on the forum and YouTube to repair/replace either.
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