vibrating sound gets worse when Ac is on

1999 HONDA TORNEO
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TULIRABA
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My car is a 1.8 litre VTEC engine , it makes vibrating sound when at low speed and it gets worse when Air Con is switched on, mainly on co-driver side.

I changed the timing belt a month a go and then this sound started, i took the car back for checking and still the vibrating sound is still there. it vibrates on the dashboard mainly on the co-driver side and gets worse when AC is on . The engine doesn't sound so great either. Kindly let me know what effect this may have on the car or i should not worry.
May 2, 2012 at 1:26 PM
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HMAC300
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if you replaced the timing belt your shouldhave replaced all the components as well. you may have not timed it correctly and it kind of sounds like you need a new blet and tensioner for the a/c alternator as well.
May 2, 2012 at 2:43 PM