alternator whistle or wine?

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Sep 18, 2011 | 08:29 PM

foxrider07

Thread Starter

Member

Joined: Jul 2011

Posts: 115

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From: wv

Year: 2000

Model: Cherokee

Engine: 4.0L

alternator whistle or wine?

On my xj my alternator whistles or wines is that bad or am i n need of a new one?

Sep 18, 2011 | 08:57 PM

alsxj

CF Veteran

Joined: Sep 2010

Posts: 1,024

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From: Coos Bay, Or

Year: 1990

Model: Cherokee

Engine: 4.0

Bearings are most likely going out, I would start thinking about getting a new one. I had mine seize up on me while driving through town, not a fun experience haha

Sep 19, 2011 | 12:04 AM

MCObray

Seasoned Member

Joined: Oct 2010

Posts: 346

Likes: 1

From: Orygun

Year: 1999

Model: Cherokee

Engine: 4.0L 6-Cylinder

Try spraying some WD-40 in there. I replaced my Alternator last year and encountered a wine, especially noticeable when lights where on. Sprayed some WD-40 in there and took care of most of the noise coming from the Alternator.