My hyundai is making a rattling noise

Question edited for clarity add maker and 'year make model engine' in the correct order.
Question moved from Misc, to 'make year' model category.

Apparently it does.

How do I know if my transmission filter needs to be changed?
Grinding noises, transmission leaks, burning smells, noisy idling, and shifting delays are all common symptoms of a clogged filter. If you notice any of these, take your car to a transmission auto repair shop.
May 30, 2022

Clogged Transmission Filter Syptoms

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It could be a leaking hose, and the PS fluid is dropping on the hot exhaust. Check the fluid level in the power steering reservoir. If low or dry, look for a leak.
I don't know about the rattling-better have someone look at it.

wheel bearings

Have a trained diagnostic tech listen to this noise, as you can imagine diagnosing a noise on this computer link is really impossible, you need to hear it first hand.

Possible. It's hard to give you an accurate cause, since I'm not able
to hear the sound. Most of the time, when you hear a slight wrapping
sound, it's a rod bearing,or crank bearing. When the rod bearing goes,
you'll know it,since it will knock like an SOB.

Check the exhaust for a loose shield. Sometimes the sheilds on the exhaust systems break at the spot welds, causing it to rattle.

SOUNDS LIKE A EXHAUST HEAT SHIELD IT SHOULD NOT BE DIFFICULT TO REMOVE

When does this happen? When you're turning? When the car is cold? Under acceleration? I need more info before I can make any suggestions.

Do you have the air conditioning on when you hear this rattle? If so, it could the clutch for the a/c compressor. You may also want to check the status of the idler pulley on the serpentine belt. Hope this helped and best wishes.

Hello onarock844...The Hyundai 2.4 litre and the 3.3 litre are known to have valve train noise. Some sooner than others.
The timing chain tensioners on the 06 and 07 Sonata 3.3 engines built before August 4, 2006 are well known for developing wear that allows them to make a tapping or rattling noise for a short time after a cold start. This noise can be mistaken for a lifter noise, although the actual source is in the front cover area of the engine. Hyundai has released a technical service bulletin on this problem, which describes installation of an updated design timing chain tensioner (part #24410-3C300) to correct this noise issue.
Ask your dealer to refer to Hyundai service bulletin #06-20-002 for information...If this has already been corrected,,,and the noise is coming from the upper engine area and not from the timing chain area, then the valve clearance will need to be adjusted. This is done by disassembling the valve train and installing slightly different size tappets to change clearance.
This is a fairly labor intensive process, so if you are still under factory warranty then you will want to go over the dealer's head and get the Hyundai zone rep involved to get it covered before your warranty coverage expires...
I recommend useing a full synthetic engine oil, i know in a few cases where the noise has stopped when the oil was changed over to synthenic, also a high quality filter is important, such as a purolator.
Good luck...i hope this helps...please rate me a fixya.