Why does my engine make noise when its cold?

Cold weather can exacerbate underlying car problems, so you may begin to hear squeaks, squeals and other funny noises you haven't heard before. These noises may be caused by the engine belt, the serpentine belt, the air conditioning compressor or a power steering pump. via

Why is Subaru cold start so loud?

Echoing some of what others have said, a high, loud, or rough idle when cold is common on newer vehicles, not just Subarus. This is done in part to reduce emissions by getting the catalyst heated quickly. via

Why is my Subaru loud when I start it?

A failing or dirty sensor can send incorrect data, resulting in too much or too little fuel going to the engine. This can result in a rough running engine that is louder than normal. Bad or Dirty Spark Plugs: Bad spark plugs can cause the vehicle to misfire which will make it run louder. via

Why does my car rattle on cold start?

A loud rattle type noise may be noted from the engine after a cold start. This can be caused by a faulty valve timing control actuator. Replacing the failed actuator will commonly correct this noise issue. via

Why does my car sound loud when idling?

Loud Idling

If there is an uneven air-fuel ration in the cylinder, combustion can occur at higher or lower rates than normal. Higher pressure in the cylinder can cause the engine to sound louder than usual or even produce a knocking sound. Not attending to this issue can lead to engine damage. via

How do I quiet down a cold starter? (video)


Why is my engine so loud when I start my car?

If you've noticed that your engine sounds much louder than normal, don't just turn up the music and hope it goes away! There are a number of possible causes, including low engine oil, a busted muffler, or dirty spark plugs. via

Why does my Subaru sound like a diesel?

Registered. Subarus usually do have a bit of valve train noise (more than the average car) because of the whole sideways head thing. And the rumble comes from the firing order/header design so that's normal as well! via

Why is my Subaru Forester so loud?

Well, first, have your mechanic check for bad wheel bearings. These Foresters are famous for that. A bad wheel bearing will sound like there's a garbage truck following you everywhere. The noise also can sneak up on you over time, because it gets a little worse and a little louder each day. via

Why does my car make a rattling noise when I first start it?

If you hear a "clack-clack" kind of rattle when you start your car's engine, it could be a sign of piston slap. Pistons move up and down in their cylinders with a tight fit between the piston and cylinder wall. via

Will steel wool quiet my exhaust?

Yep, it's been done. My neighbor used to do it many years ago. It was a good trick to pack the bored out mufflers with steel wool to get to quiet noisy exhausts. But the steel wool would eventually either burn up or rust away (which was the goal to get back to a loud unrestricted exhaust). via

What is a cold start up?

This is what is known as a cold start, it means that the engine isn't yet at its optimum temperature and therefore is “cold.” While some may worry that something is wrong, a cold start is completely normal and is part of getting your car's engine up to temperature. via

How can I make my car quieter louder?

Buy a New Silencer

One more product that can help you is a muffler silencer. These things basically narrow the hole through which the sound must pass through, thereby making it a bit quieter. They're also incredibly easy to install: you just slip it into the exhaust pipe. via

Why is my car making a propeller sound?

In some cases the noise is due to a brake rotor that is warped, and is clicking against the brake caliper. It can also be due to a wheel bearing that is damaged, CV joint that is damaged or even the inside of the wheel that has a wheel weight that is clicking on the brake caliper. via

Is a Subaru a good vehicle?

Subaru is more reliable than most car brands out there right off the bat. According to RepairPal, the Subaru brand has an overall reliability rating of 3. ⁄5 and ranks 14th out of 32 car brands. The average annual repair cost is $617, which is slightly better than $652 across all models. via

Why is my Subaru making a humming noise when off?

"You may hear a noise from under the vehicle approximately 5 to 10 hours after the ignition switch is turned to the “LOCK”/“OFF” position. However, this does not indicate a malfunction. This noise is caused by the operation of the fuel evaporation leakage checking system and the operation is normal. via

What is the humming noise in my car after I turn it off?

Sometimes turning off your vehicle doesn't seem to turn everything off. You might still hear noises coming from the vehicle after shutting it down. Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off. via

What does Subaru PZEV mean?

The Subaru PZEV (Partial Zero Emission Vehicle) is the affordable, no-compromise, eco-friendly alternative. via

Are Crosstreks loud?

Consumer Reports says, "The Crosstrek delivers good fuel economy with impressive ride comfort and competent, enjoyable handling. It has low levels of road and wind noise, which contribute to a solid and substantial feel. The only time the Crosstrek gets loud is under hard acceleration when the engine becomes gruff." via

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