# Squealing sound from under hood **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** corolla, toyota\ **Created:** [October 3, 2021, 12:46am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751 "2021-10-03T00:46:08Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 12:46am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/1 "2021-10-03T00:46:08Z")
I have a 2006 Toyota Corolla. I think it has a timing chain, not a belt. But every time I turn on the engine and as I’m driving along, I hear a loud squealing sound from the engine compartment. Anyone know what is going on? Thanks ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [October 3, 2021, 12:47am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/2 "2021-10-03T00:47:37Z")
Have you’ve tried replacing the serpentine drive belt? Tester ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 12:50am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/3 "2021-10-03T00:50:02Z")
PS it has 150,000K on it ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [October 3, 2021, 12:54am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/4 "2021-10-03T00:54:38Z")
Something the SERP belt spins is making noise. Tensioner pulley. Idler pulley. Alternator. And so on ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 1:32am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/5 "2021-10-03T01:32:50Z")
No I haven’t. Next time I go for maintenance I can ask about that. Thank you ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [October 3, 2021, 1:41am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/6 "2021-10-03T01:41:12Z")
> [@D.J](#): > > I hear a loud squealing sound from the engine compartment. If the squealing is constant you should take it in now before some thing breaks an leaves you stranded may be in a bad area, [quote="Cavell, Tensioner pulley. Idler pulley. Alternator. And so on ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 1:42am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/7 "2021-10-03T01:42:25Z")
I’m going to call the repair shop right now and make an appointment to have it fixed this weekend. ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [October 3, 2021, 1:44am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/8 "2021-10-03T01:44:16Z")
Good idea an hopefuly it will be something easy to fix. ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 1:44am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/9 "2021-10-03T01:44:42Z")
I hope so too ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 1:54am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/10 "2021-10-03T01:54:18Z")
Made an appointment for October 9. It’s earliest one my trusted mechanic has available. It’s been squealing for months, but I’ve been just turning the radio up loud. ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [October 3, 2021, 1:57am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/11 "2021-10-03T01:57:20Z")
Yep a loud radio will do it I have used that cure a time or two. 😆 ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 1:59am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/12 "2021-10-03T01:59:03Z")
My next question is, how long would it take to change a serpentine belt if that is indeed the issue? If I bring it in on Saturday at 10:30 am should it be done by the end of the day at 5 pm.? The shop is open on Sunday too. As long as my car is ready by Monday because I need it to drive to work 40 miles each way. ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 1:59am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/13 "2021-10-03T01:59:45Z")
How many hours would it take to change a serpentine belt ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [October 3, 2021, 2:13am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/14 "2021-10-03T02:13:12Z")
I am not a mechanic just a DIYer but I don’t think the belt is your only problem > [@Cavell](#): > > Something the SERP belt spins is making noise. Tensioner pulley. Idler pulley. Alternator. And so on It is probably as Cavell said some thing else but it should take less than a day if the shop can get the parts on he weekend. ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [October 3, 2021, 2:18am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/15 "2021-10-03T02:18:40Z")
Let us know what the outcome is. ---
**Author:** ![shadowfax](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/shadowfax/32/13026_2.png) [@shadowfax](https://community.cartalk.com/u/shadowfax)\ **Post date:** [October 3, 2021, 4:02am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/16 "2021-10-03T04:02:15Z")
> [@D.J](#): > > How many hours would it take to change a serpentine belt It’s more a question of how many cars are in front of yours. It doesn’t take that long to change a belt. It’ll take a little longer if they need to change pulleys or the tensioner. But yeah, assuming they can get whatever part(s) they need, it’s not unlikely it’d be done in a day. The shop may also have a loaner car available, if it takes longer. ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 4:23am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/17 "2021-10-03T04:23:22Z")
What else might be the other problems? ---
**Author:** ![D.J](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@D.J](https://community.cartalk.com/u/D.J)\ **Post date:** [October 3, 2021, 4:25am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/18 "2021-10-03T04:25:35Z")
I will. Hopefully it’s not too expensive and doesn’t take too long ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [October 3, 2021, 4:34am UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/19 "2021-10-03T04:34:01Z")
> [@D.J](#): > > What else might be the other problems? Any thing the belt drives. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [October 4, 2021, 11:38pm UTC](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751/20 "2021-10-04T23:38:54Z")
Sometimes it is possible to narrow down the location a sound is coming from by using a short length of old garden hose as a sort of stethoscope. [Next page](https://community.cartalk.com/t/squealing-sound-from-under-hood/179751.md?page=2)