What is causing rattling sound while at idle and from underneath car on driver's side?

There are several causes for the engine to rattle while idling. With your car, the heat shield or an under engine shield is most likely. The other causes are the AC compressor clutch, idler pulley, or belt tensioner.

1. What is the most likely cause of a rattling sound coming from the underside of a vehicle?
2. What is the rattling sound in the front of my car?
3. What does it mean when your engine is making a rattling noise?
4. Why does my car make noise when idling?
5. What do a bad strut sound like?
6. Do bad struts make a rattling noise?
7. Can low oil cause rattling?
8. When I accelerate my car makes a rattling sound?
9. What does a blown motor sound like?
10. How do you know if your shocks or struts are bad?
11. Will bad shocks cause clunking noise?
12. What does a loose suspension sound like?
13. Why does my car sound like a helicopter when idling?
14. Can bad spark plugs cause rattle?

What is the most likely cause of a rattling sound coming from the underside of a vehicle?

Rattling from under your car– This can be caused by loose parts such as your exhaust system. Squealing wheels while braking– Causes range from small, such as dirt on the brake pads or rotors, to serious, such as worn pads. Brake noises are safety issues and require immediate attention.

What is the rattling sound in the front of my car?

Essentially, a wheel bearing starts to go bad when its surface isn't smooth anymore. Therefore, it can't provide a quiet ride and may even cause riding discomfort. It will often make a rattling noise or shake the car when driving. The process to change a bearing requires taking apart the hub assembly near the wheel.

What does it mean when your engine is making a rattling noise?

You usually hear this noise when accelerating the vehicle. Most people call this a pinging or rattling sound. This noise is caused by an air/fuel mixture in the engine cylinder being ignited prematurely by the heat of compression as the piston is moving up on the compression stroke.

Why does my car make noise when idling?

Loud idling is usually caused by issues with cylinder compression. When there are problems with cylinder compression, you get an uneven fuel-air ratio. As a result, combustion becomes unusual. Having higher pressure inside the cylinder will result in loud idling noise.

What do a bad strut sound like?

Bad strut sounds are usually described as a hollow clunking or banging type of sound. You'll typically hear the noise when the vehicle is traveling over irregularities in the road. ... It's also possible to get a bad strut mount sound—an audible clunking or creaking when turning the steering wheel.

Do bad struts make a rattling noise?

A bad strut usually makes a sound--normally, a rattling, loose sound--that's especially noticeable when driving over bumps or rough patches in the road.

Can low oil cause rattling?

Reason, Low Engine Oil Level:

And, if the oil level gets too low, you can have a situation; where the oil pump sucks air into it; and the air gets pumped through the engine, along with whatever oil is remaining. As a result, this can cause a rattling or ticking noise from within the engine.

When I accelerate my car makes a rattling sound?

Rattling noises when accelerating can be caused by low fluid levels in the A/T. Open the hood and check the fluid level. If the car is running low on transmission fluid, refill the reservoir to the proper level. After doing this, start the car and take a short test drive to see if the problem goes away.

What does a blown motor sound like?

You'll know your motor has blown if there is a very loud noise. It can sound like a bang or a very loud knocking noise. If the engine is completely seized or you see smoke billowing out, that's also a sign that it's blown.

How do you know if your shocks or struts are bad?

The Warning Signs Of Worn Shocks And Struts

The movement may be slight, but you notice it. Vehicle “tips” to one side in turns. When taking a sharp turn or an off-ramp, your vehicle leans or “tips” to the outside of the turn and feels wobbly. The front end dives more than expected during hard braking.

Will bad shocks cause clunking noise?

There is most likely nothing wrong with the replacement shock or strut, but a metallic clunking noise typically indicates loose or worn mounting hardware. A loose mount can allow movement between the bolt and attaching parts, while a mount that is worn can cause the shock/strut to move up and down.

What does a loose suspension sound like?

There are four sounds in particular that you should look out for: creaking, grunting, rattling, and knocking. See your auto collision center if you hear any of these noises, and keep reading for more on the four sounds of suspension problems.

Why does my car sound like a helicopter when idling?

You Have a Loose Tire

The reason this can cause your car to drive louder than usual is due to the changed and uneven motion of your tires against the surface of the road. Especially if you recently had your tires changed or rotated, this could be the cause behind your car sounding like a helicopter.

Can bad spark plugs cause rattle?

Sometimes, especially while accelerating, you will hear your engine making a distinct knocking sound. ... When that happens, you hear a knocking sound from your engine. Bad spark plugs are common causes of engine knock, but simple to fix.