My friend has a 96 civic DX that when he starts up in the morning it whines loudly. Once it warms a bit the whining stops, but once he turns on the A\C , it starts whining again even louder than when he started it.

I checked the A\C belt, and it seems really tight. I didn't have a straight edge(or anything to use in its place at the time) to measure the belt deflection.

Could the A\C belt being too tight be the cause of this whining?



Thanks for any input.

 

twist the belt. easiest way to measure belt deflection is to twist the belt. if you can twist it so that the edges of the belt are perpendicular to how it normally wraps around the pulley or more, they're too loose.

if you cannot twist it more than 45 degrees from horizontal, it's too tight.

 

Thanks, I'll do that.

 

could also be a AC compressor bearing... Be sure to check all of the belts...

Good luck

Jung