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a/c makeing weird noise

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Old Jul 8, 2010 | 07:31 PM
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94red2door's Avatar
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Model: Cherokee
Default a/c makeing weird noise

i have a 94 jeep cherokee and when i have my a/c on every once in a while it makes a loud humming noise it kinda sounds like a horn. any suggestions????????
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Old Jul 9, 2010 | 02:30 AM
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From: Everett, WA
Year: 1990
Model: Cherokee
Engine: 4.0l
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Vacuum acutators on your HVAC bax can hum sometimes, check your AC clutch, Compressor, your belt and make sure its tight enough or to tight. Belt gauges can be bought for $10.
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