[Matthewstorm]

The other day is I drove off I got about maybe 2000 feet and suddenly I heard an awful screech sound coming from under the hood. It stopped as I accelerated, and it came back about 20 minutes later for 30 seconds and then it went away again. And it hasn't come back, but it's got me a little worried. And I wanted to get advice first before going to the dealer. Any thoughts? The car was sitting for about a week. And it's under outside carport and we just had a major storm if that makes any difference.

[StanDiego]

Originally Posted by Matthewstorm

The other day is I drove off I got about maybe 2000 feet and suddenly I heard an awful screech sound coming from under the hood. It stopped as I accelerated, and it came back about 20 minutes later for 30 seconds and then it went away again. And it hasn't come back, but it's got me a little worried. And I wanted to get advice first before going to the dealer. Any thoughts? The car was sitting for about a week. And it's under outside carport and we just had a major storm if that makes any difference.

Are you missing any cats or other critters?

Pop the hood and look for any obvious problems (fluids, debris, etc.). If you don't see anything obvious and it doesn't come back, I wouldn't worry about it. If it returns, take it to the shop.

[perryinva]

Of course you looked under the hood just in case it was obvious, right?

[M4_444]

Originally Posted by Matthewstorm

The other day is I drove off I got about maybe 2000 feet and suddenly I heard an awful screech sound coming from under the hood. It stopped as I accelerated, and it came back about 20 minutes later for 30 seconds and then it went away again. And it hasn't come back, but it's got me a little worried. And I wanted to get advice first before going to the dealer. Any thoughts? The car was sitting for about a week. And it's under outside carport and we just had a major storm if that makes any difference.

You may have a rock chip, pebble or other debris lodged between your brake rotor and the heat shield. Find a big open parking lot and throw her in reverse and see if you can dislodge it.

[tracer bullet]

Almost always a belt slipping or pulley bearing squealing, often the tensioner if it is a pulley. Pretty much true of any car on the road.

Might not need replacement, there are various belt dressings and such available. They spray on and are a bit "sticky".

[StanDiego]

Originally Posted by tracer bullet

Almost always a belt slipping or pulley bearing squealing, often the tensioner if it is a pulley. Pretty much true of any car on the road.

Might not need replacement, there are various belt dressings and such available. They spray on and are a bit "sticky".

Valid info but it's quite unusual for a vehicle that's only a few months old.

[Balr14]

I get a screeching noise every time I accelerate hard in Sport Plus mode. That would be my wife.

[Westside Guy]

Originally Posted by Balr14

I get a screeching noise every time I accelerate hard in Sport Plus mode. That would be my wife.

I think we are married to the same woman!

[stlcdr]

I'm going to go with the 'stone in the brake heat shield' as the likely cause, but wouldn't discount other reasons.

[alvitdk]

Originally Posted by Griat1981

Considering the intermittent nature of the sound, it's advisable to have your car inspected by a qualified mechanic or take it to a dealer. They will be able to diagnose the issue accurately by performing a visual inspection, checking the belts, pulleys, and related components.

yeah...Every time I have intermittent issues I get told could not find anything and come back when the issue is noticeable, under warranty they do not feel like wasting hours trying to solve an issue that's not there...at least that's my experience with every manufacturer in the past.

[tracer bullet]

Originally Posted by StanDiego

Valid info but it's quite unusual for a vehicle that's only a few months old.

Agreed, but there ain't much else under the hood (aside from maybe PVC's of old) that make noises like this.

A belt could slip if someone slopped a little oil around at the last time it got changed...

[Matthewstorm]

Appreciate all the comments. I have not driven it since and it's a HUGE pita to get the car to a dealer. I'm going to try and check it out again tomorrow. I did reach around the front rotors for an obstruction but couldn't find anything. I actually have not looked under the hood. That would be too obvious. . I've also been pretty sick of late

[M4_444]

Originally Posted by Matthewstorm

Appreciate all the comments. I have not driven it since and it's a HUGE pita to get the car to a dealer. I'm going to try and check it out again tomorrow. I did reach around the front rotors for an obstruction but couldn't find anything. I actually have not looked under the hood. That would be too obvious. . I've also been pretty sick of late

Very very unlikely that you'll be able to either feel or see the obstruction by reaching behind the rotor. Just try the driving in reverse method. Hell of a lot easier than removing the wheels or going to the dealer

[Matthewstorm]

Started the car and opened the hood. Everything looked and sounded pristine. Took the car out and ran it like I stole it. Not one strange sound. Wonder what that could have been. It was really like a banshee screech.

[StanDiego]

Originally Posted by Matthewstorm

Started the car and opened the hood. Everything looked and sounded pristine. Took the car out and ran it like I stole it. Not one strange sound. Wonder what that could have been. It was really like a banshee screech.

For future reference, one good way to help isolate such problems is to pay attention to the frequency, if it increases or decreases with road speed or engine RPM changes. Generally, if it changes with engine speed (RPM), it's likely associated with the engine or components driven off of the engine. If instead the frequency of the noise changes with vehicle speed, there's a good chance it's associated with the wheels, brakes, or connected components. If the frequency doesn't change with speed or RPM, there's a good chance it's something else. There are exceptions, but these general rules can help.