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Squeling noise when engine warmed up

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New User

Sep 28, 2021, 8:05 PM

Post #1 of 2 (759 views)
Squeling noise when engine warmed up Sign In

Hyundai i20, 21K miles, 2017

So I took my car on bad uphill road without tarmac and it got stuck. Had to push, rev hard to get it free and move up.
Post that I noticed some noise from the engine bay. I cant be 100% sure it started after this but Im pretty certain it did.
The noise is not a continuous one. It repeats periodically every second or so. Sounds like a squeal.
The noise is non-existent when engine is just started up and comes after some driving around. The noise is only present when idling. It goes away on revving. It also goes away when the AC is switched on. I replaced the belt and the noise is still present.
Any help would be appreciated.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Sep 29, 2021, 12:18 AM

Post #2 of 2 (743 views)
Re: Squealing noise when engine warmed up Sign In

OK, This was in trouble for traction and seems you just allowed wheels to spin frantically, just BTW that's usually damaging, plus doesn't work so well vs other ways.

Not the issue it broke or harmed something already no doubt. Belt since it only does it with A/C "off" was a good try WAS also a chance to see if all items on belt are spinning as expected. Let it be I think a lot of dirt or debris is still somewhere or did damage?

Get this up overhead or take to a garage/shop and look for what happened. This is remarkably low mile still damage is likely but need to know it.

FYI about the most commo A/C (this car not sold to the US with a quick look not sure of much) is both an idling pulley AND the clutch lock when in use that pulley is no longer in use rather whole thing is turning. That's where to look, compressor area a bent shield, debris or just plain broken parts.

Always tricky to guess at noises it would be warranty item if not for this history (IMO) is abused and vehicle not really meant for off road trauma quite so early like this. Good luck + hope you just find something silly and it's OK, it's NOT while making this noise so keep looking,

Edit to add a pic of general car may not show>

(This post was edited by Tom Greenleaf on Sep 29, 2021, 12:53 AM)

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