See also:

Exhaust pipe and muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration, or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace part ...

Driveshafts and Boots
Check the drive shafts, boots and clamps for cracks, deterioration, or damage. Replace any damaged parts and, if necessary, repack the grease. ...

Checking Condenser Cooling Fan
The condenser cooling fan should come on automatically whenever the air conditioner is in operation. ...