alternator whistle or wine?

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09-18-2011, 08:29 PM

foxrider07

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Join Date: Jul 2011

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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?

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09-18-2011, 08:57 PM

alsxj

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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

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09-19-2011, 12:04 AM

MCObray

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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.