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There are a few things that might cause an air conditioner to make a rattling noise. It could be that the there is dirt and debris in the cabinet. If this is the case, cleaning the cabinet should stop the rattling. The reason could also be loose panels on the cabinets. The fan could also be bent and no longer straight.
Most likeyl cause could be a bad pulley
No
Many different things can cause a rattling noise in a Mazda tribute. Stark by checking the engine belts and all brackets for anything that could be loose and causing a rattle.
Ha, lots of noise :]
bad transfer case
It could just be the heat shield on the under side of the catalytic converter.
when i turn on the ac in my 2000 honda civic it makes a loud noise when the fan is working what could that be ?
You could be very low on oil, check your oil and add to the full line.
The rattling noise is in there so you can move the head around.
assorted loose things
I'd like to know too! Mine does the same thing - it makes a rattling noise upon startup that goes away after 30 seconds or so and isn't present while driving or idling.