Bad Car Sounds And The Cause Flashcards
What causes squealing or screeching when braking?
- Worn brake pads
- Glazed pads or rotors
- Dust or debris between pads and rotor
- Loose or missing anti-rattle clips
Refer to Chapter 26, Pages 1152-1156.
What is the screeching noise in the engine bay caused by when the engine is running?
- Worn or loose serpentine/accessory belt
- Belt misalignment
- Worn tensioner or pulley
Refer to Chapter 17, Pages 752-755.
What causes grinding noises when braking?
- Metal-on-metal (worn-out brake pads)
- Seized caliper
- Damaged rotor
Refer to Chapter 26, Pages 1155-1160.
What are the causes of grinding when shifting gears?
- Worn clutch (manual)
- Damaged synchros
- Low transmission fluid
- Internal gear damage
Refer to Chapter 21, Pages 946-955.
What causes knocking or pinging when accelerating?
- Pre-ignition or detonation
- Using low-octane fuel
- Carbon buildup in combustion chamber
- Faulty knock sensor
Refer to Chapter 18, Pages 794–796.
What causes clicking or ticking noises when idling or accelerating?
- Low oil level
- Worn valve lifters/tappets
- Valve clearance issue
Refer to Chapter 18, Pages 792–794.
What are the causes of rattling noises when at idle or during acceleration? (Exhaust)
- Loose heat shield
- Damaged catalytic converter
- Loose exhaust hangers
Refer to Chapter 20, Pages 923–926.
What can cause popping or banging noises from the exhaust?
- Unburned fuel in exhaust (rich mixture)
- Timing issue
- Exhaust leak
Refer to Chapter 20, Pages 920–922.
What causes whining noises when steering?
- Low power steering fluid
- Worn power steering pump
- Air in the system
Refer to Chapter 24, Pages 1085–1087.
What causes roaring or humming noises at highway speeds?
- Uneven tire wear
- Bad wheel bearings
- Cupped tires
Refer to Chapter 24, Pages 1071–1074.
What causes thumping or clunking noises over bumps?
- Worn struts/shocks
- Loose sway bar links
- Broken control arm bushings
Refer to Chapter 23, Pages 1035–1040.
Fill in the blank: A worn serpentine/accessory belt can cause _______ in the engine bay.
squealing or screeching
True or False: A seized caliper can cause grinding noises when braking.
True
What are the causes of knocking noises that occur constantly while the engine is running?
- Worn rod bearings
- Worn crankshaft
- Low oil pressure
Refer to Chapter 18, Pages 799–800.
What can cause a clicking noise when turning?
- Bad CV joint
- Loose hub cap
- Debris in tire tread
Refer to Chapter 24, Pages 1075–1079.
What indicates a valve timing issue when popping or banging occurs from the engine?
- Valve timing issue
- Cracked spark plug
- Ignition coil misfire
Refer to Chapter 18, Pages 798–799.
What are the causes of a whining noise during acceleration?
- Worn transmission gears
- Low transmission fluid
- Differential wear
Refer to Chapter 21, Pages 950–955.
Fill in the blank: A loose heat shield can cause _______ noises at idle or during acceleration.
rattling
