engine squeals when starting - Engine and Car Noises


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engine squeals when starting

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Auto Repair Home>> Automotive Repair>> Engine and Car Noises

gray55
New User

Oct 3, 2017, 6:43 AM

Post #1 of 4 (1680 views)

engine squeals when starting	Sign In

2004 Toyota Highlander 6 cyl. 3.0
When the vehicle is started after sitting for a long time, the engine squeals. It sounds like the serpentine belt or pulley is going. It lasts for about 30 seconds and then all is well. Any thoughts?

Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Oct 3, 2017, 6:56 AM

Post #2 of 4 (1673 views)

Re: engine squeals when starting	Sign In

Have you checked the belt(s) tension and condition?

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

gray55
New User

Oct 3, 2017, 8:09 AM

Post #3 of 4 (1658 views)

Re: engine squeals when starting	Sign In

yes, tension seems good and belt is in good condition. I forgot to mention mileage. It has about 180,000 miles. Thanks.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 3, 2017, 8:30 AM

Post #4 of 4 (1657 views)

Re: engine squeals when starting	Sign In

gray: What is a "long time" you said it sits? Battery very slowly get lot just sitting then quickly when started starter takes 'AMPS' out to do that and alternators quickly put battery up to full charge - it actually is a drag on the belt depending now on real condition of belt, pulley and real tension and anything perhaps damp, gun rust on pulleys quickly clear off. If it never does it again the same few days there may be nothing wrong but you should want to be sure.

Can spin pulleys with belt(s) off for a problem or I might see how easy it is to spin alternator itself, engine off before starting. If you can by hand it would squeal.

Tension may seem fine if self tensioned there are marks for the range it can do that to check. Belt and pulley do wear a little plus shine up aggravates belt noise.
They do sell quiet belt if the situation is normal for what it's exposed to helps vs replacing all pulleys too shined up most people wouldn't go for that unless severe.

In short could be normal but test it out for battery age and condition can NOT have quite the AMPS close enough anymore alternator works that much harder.

Also park with wheels straight ahead if on the same pulley your PS pump is also taking up belt power depending. Understood if against a curb or on a slope suggestion is to leave wheels turned if still part of driver's license written tests and may for a road test be asked or not - depends.
It's not real funny but some where I am you get your license if you just don't cause an accident right away it's pretty lame.

So how long and recheck real tension + tensioner or travel area it sits in not near or on the end of the range,

T

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