You probably understand how your vehicle sounds when it’s running properly. Listening to your vehicle can help you troubleshoot problems. In the event you hear an unusual sound, be aware and react accordingly.
You hear a higher-pitched squeal that stops whenever you shut off your engine: Readjust or replace the belt. These belts should have about half an inch of play and shouldn’t be frayed, cracked, or glazed in the underside.
You hear a continuous high-pitched sound that could continue following the engine’s turn off: Check the radiator pressure cap. The rubber gasket may be worn.
Something ticks rhythmically while your engine idles: Shut off the engine, wait ten minutes for that engine to cool and also the oil to settle, after which check the oil level. For those who have enough oil, have a mechanic check the valve adjustment.
Should you hear a loud tapping or knocking sound within your engine, pull to the side of the road and call for road service. The cause may be a loose rocker arm or carbon buildup within the engine, but if it’s a loose bearing or a faulty piston, it may destroy the engine.
Mild knocking or “pinging” may be the consequence of using fuel with the wrong octane rating.
You hear the engine running once you turn off the ignition: Your engine is dieseling. This condition only occurs to cars with carburetors. It will always be caused by an idle speed that’s set too high or excessive carbon in the combustion chamber.
You hear a whistling noise coming from within the hood: Look into the hoses for vacuum leaks. There’s probably a leak within the weatherstripping in the event the whistling emanates from inside the vehicle.
The engine idles with an offbeat rhythm: It’s probably misfiring. Turn the engine off and check out the following:
Check the spark plug cables for breaks or shorts in the wiring.
If they’re clean and properly gapped, remove the spark plugs one at a time and check to view. Replace any that are fouled or burned.
If attending to the spark plugs doesn’t help, possess a technician look into the ignition system with an electronic engine analyzer.
The idling is rough but even: Have a technician check the compression in each cylinder.
Your car makes a loud, abnormal sound: A hole in the muffler is one of the cause. Replace it immediately.
The horn is stuck: Pull the wires to avoid the noise, as shown here, in case your horn gets stuck.
If your horn gets stuck, pull a wire to silence it.
Pull a wire to silence it if your horn gets stuck.
You hear a solid but can’t locate the original source: Get an old stethoscope. As shown here, take off the rubber disc and insert a piece of tubing in its place (about 1-1/2 inches is going to do). Then place the plugs with your ears, run the engine, and move the tube end of your stethoscope round the hood area. The stethoscope amplifies the sound as you may near the part that’s causing it.
A sheet of tubing along with an old stethoscope make an effective troubleshooting device.
A piece of tubing and an old stethoscope make an efficient troubleshooting device.
You hear whining or humming sounds on curves: Your wheel bearings may be wearing.
Your tires make a weird, rhythmic sound as you drive: Check inflation, tire wear, and wheel balancing.
You hear squealing when you step on the brake: You’ve probably worn the brake pads down very far. Get them replaced immediately.
For those who have drum brakes, brake linings that are glazed or worn can cause them to squeal also.
You hear rumbling noises coming from under or toward the rear of the vehicle: The trouble might be a defective exhaustpipe and muffler. Alternatively, catalytic converter; or it could be provided by a worn universal joint or some other part of the drive train. Have a service facility put the car through to a hoist and find the problem.
You hear clunking under your vehicle, especially when you go over a bump: Check the shock absorbers and suspension system. Your tailpipe or muffler may be loose. in the event the sound is toward the rear