My car has a loud screeching noise when started. It goes away in 10 minutes. if it is a belt issue, how do I know which belt to replace?

Ned C Cook

• 3433 Answers
• Posted on Aug 27, 2009

SOURCE: Hello, I purchased a 2003 Hyundai XG350 last

See if it goes away when you turn the A/C off. The a/c comes on when you sre in the defrost so yo don't hit the windshield with hot air. The screaching is more than likely the A/C clutch trying to engage, that why it was overlooked or ignored by the mechanic. It is a common thing. The battery should be allowed to recoup from the starting of the car which a few minutes of running woll help so the a/c clutch gets full battery voltage to function.. Turning on the defrost and /or the A/c after about 3 minutes of warm up. Open your hood and have someone turn the a/c on and off, you can hear and sctually see the a/c clutch doing its irritating thing.But keep your fingers out off the engine and don't lean over it with loose clothing. Good Luck, Ned

SOURCE: help please my 2001 hyundai elantra at start up it

It's the drive or main belt that you can see on the front of the engine. Probsbly one of the pullies locking up or the belt tensioner is going bad.