Noises and smells : common questions

A clunk over bumps or potholes often comes from worn suspension parts: sway bar links, ball joints, shocks or mounts. Montréal roads are hard on these parts. A suspension inspection finds the cause. Steering and suspension →

A high squeal at startup, especially in cold or damp weather, often comes from a worn or loose belt. A belt that breaks can stop the alternator or water pump. Have it checked. General repair and maintenance →

A rotten egg smell often comes from the catalytic converter or a fuel mixture problem. It can also come from an overheating battery. Have the car inspected soon. General repair and maintenance →

A sweet smell usually means a coolant (antifreeze) leak. Watch the temperature gauge and the coolant level. Coolant is toxic, so get the leak fixed without delay. General repair and maintenance →

It can be oil dripping on the exhaust, overheated brakes, a slipping clutch or an electrical issue. A burning plastic smell or smoke means pull over somewhere safe. Have it inspected before driving further. General repair and maintenance →

A louder exhaust often means a leak, a rusted-out muffler or a broken hanger, common with salt and rust. An exhaust leak can let fumes into the cabin. Have it checked quickly. General repair and maintenance →

A hum that rises with speed often comes from a worn wheel bearing or unevenly worn tires. If the noise changes when you turn, it's often a bearing. Have the wheels inspected. Steering and suspension →

A clicking when turning, especially at full lock, often comes from a worn CV joint. A torn boot lets dirt in and speeds up wear. An inspection confirms it. Steering and suspension →