Whats that sound coming from under the hood of a car when you shut off a car engine after driving for a while and it sounds like tiny rocks hitting metal?

1. Is it normal for your car to make noise after you turn it off?
2. Why does my car sound loud under the hood?
3. Why does my car make a clicking noise when I turn it off?
4. Why does my car sound like its still running?
5. Why does my car make a loud noise while parked?
6. What does a damaged muffler sound like?
7. What does a bad muffler sound like?
8. What causes car to accelerate loudly?
9. Does a bad alternator make a clicking noise?
10. Do alternators make a clicking noise?
11. Why does my car sound like a lawn mower?
12. Why does my car sound like a diesel?
13. Can I drive with a bad muffler?
14. Why is my car making a rattling noise when idling?
15. Can I drive my car if my muffler fell off?

Is it normal for your car to make noise after you turn it off?

If you've recently noticed that your car is making concerning noises once the engine is off, don't panic—the noises could be completely normal; however, for safety reasons, and in the interest of saving money, it's best to have the problem checked out.

Why does my car sound loud under the hood?

Bad Bearings

If you're hearing a constant knocking under the hood, it's likely that you're dealing with bad engine bearings. The bearings are what the moving parts of the engine sit on. When you've driven the car too far or too long, these bearings can wear out and start causing the under-the-hood knocking.

Why does my car make a clicking noise when I turn it off?

Once the engine has been turned off, the metal parts under the hood are allowed to cool off. That ticking sound we hear, are the expanded metal parts, beginning to contract again, due to the cooling process.

Why does my car sound like its still running?

Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off. ... Once outside the car, she could hear a fan running in the engine area and asked us if this is normal. It is. And many other sounds from under the hood of a car that has been shut off are also normal.

Why does my car make a loud noise while parked?

It is quite possible that the noise you're hearing is the radiator fan that is stuck open. This can occur when an electrical relay is damaged, but it can also be caused by an electrical short.

What does a damaged muffler sound like?

A broken muffler can be more than just loud rumble coming from the tail end of your car. It is an indication that there may be a hole or a crack in the muffler or exhaust pipe, which is causing a loud, low roar or rumbling sound when you apply pressure to the gas pedal and accelerate your vehicle.

What does a bad muffler sound like?

The biggest and most noticeable sign of a bad muffler is the noise. When your muffler fails, the car will suddenly seem a lot louder than it did before. Be especially vigilant for any strange or sudden rattling noise, which could be the sound of a muffler that's become loose or broken.

What causes car to accelerate loudly?

Loud squeaking or squealing noise while accelerating could mean there's a problem with your engine belt. It could mean the belt's loose or worn. Or it could mean that one of the belt's pulleys is starting to fail. Loud rumbling noise when accelerating might suggest there's a problem with your exhaust system.

Does a bad alternator make a clicking noise?

It requires a good deal of energy to crank the car's motor, and if a battery is not replenishing its power properly due to a faulty alternator, it will become drained and ineffective. You will hear a clicking noise while attempting to start the car, and the engine will have difficulty turning over.

Do alternators make a clicking noise?

Worn Alternator

An alternator may make a clicking sound if the bearings or other internal components are beginning to wear. Once the alternator has been identified as the source of the sound, remove the drive belt and turn the pulley by hand. If the pulley does not turn smoothly, the alternator is worn.

Why does my car sound like a lawn mower?

A loud noise coming from your vehicle when you accelerate, particularly one that sounds similar to a lawn mower is most likely due to an exhaust system leak.

Why does my car sound like a diesel?

The ​diesel engine ticking noise​ could be a sign of low oil level that causes the valvetrain components to not get proper lubrication. Check your oil level immediately and if it's low, you must service your car. Another culprit causing this noise could be a faulty lifter or a bad connecting rod.

Can I drive with a bad muffler?

The possibility of toxic exhaust fumes leaking into your car's ventilation system represents the largest reason for not driving with a broken or damaged muffler. You put yourself and others in serious - and potentially fatal - danger if this occurs while you drive.

Why is my car making a rattling noise when idling?

One common problem that will cause a rattle at idle is a failing hydraulic valve lifter. The lifters are small parts that open and close the engine valves, activated by oil (hydraulic) pressure. ... If you hear a "clack-clack" kind of rattle when you start your car's engine, it could be a sign of piston slap.

Can I drive my car if my muffler fell off?

So what happens if your muffler falls off? ... If the muffler has a hole in it, carbon monoxide can leak into the passenger cabin and your vehicle is unsafe to drive. Carbon monoxide can cause dizziness, nausea, and headaches. Unconsciousness and death can occur if you are exposed to this gas for a long period of time.