Being aware of odd noises for your vehicle is important. If you accelerate and hear a squeal, a squeak, or a whine, odds are the cause is a worn belt. Your timing belt might whine while idling, and actually stop whining after you continue accelerating, only to return once you slow down. Your engine’s whining noise can be addressed relatively easily. It can be caused by a worn serpentine belt, worn pulley causing the belt to slip, or pulleys are loose and need to be tightened
If your engine makes a pinging or knocking noise it is likely caused by an ignition problem. This knocking and pinging occurs when fuel ignites inside the cylinder, only to have more fuel enter the cylinder immediately after. This second ignition could be caused by a number of things, including bad fuel filters o injectors, damaged spark plugs, or a poor distributor cap.
Rotating parts, like belts or brakes, make grinding or whining noises, but reciprocating parts, like pistons or tire rods, make an annoying ticking or clicking noise during operation. Listen to these noises carefully and you should be able to identify the cause. A noise when you go over speed bumps could be the sign of worn struts or sway bars. Try checking your oil if the ticking comes from the engine, it could be an incredibly easy fix.
All engines begin to make some unnatural noises over time. Wear and tear on engine parts are unavoidable, and sometimes, even idle engines can make noises that aren’t quite right. Ideally one would only be able to hear the pistons going up and down. However, keep an eye out for other noises – such as clunking, grinding, or screeching – so that you can fix any issues before they get extensively worse. When you notice an issue with your vehicle, make sure to have it inspected as soon as possible. This will help to ensure it stays efficient as long as possible.