the noise of my van is going up and down on 2004 Chrysler Town & Country

it vibrate so bad most especially when i put on the cold air or heat

by in Baltimore, MD on December 04, 2012
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2 answers
ANSWER by , December 04, 2012
Blower fan wheel out of balance. Remove unit and clean out blower. Usually a mouse nest in blower wheel. Or bearing worn out.
ANSWER by , December 04, 2012
agree with wetry or poss a/c compressor or related pulleys on eng