Question about BMW 318

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Bmw 318i 1996 screeching belt

Car screeches when turned on and when idling. It lasts 20-30 minutes then goes away slowly. Not sure if I should tighten a belt or which belt to tighten

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It might not need to replace the belt but to adjust (tighten) them. Check for a loose one and adjust it. Does the noise changes or stops if the AC is on or off? Or if you turn your steering all the way to either side?

Posted on Apr 23, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Screeching sound from engine

I can pretty guarantee you it is your altrnator belt.. By turning on your headlights, it creates more load on the alternator, which in turn makes the belt work harder. To confirm, you can try some silicone spray on the belt. The noise should change or disappear. This happens a lot in winter when dirt gets on the belts.
Usually that will solve it. If not, you may have to get the belt changed.
Good luck,

Dan

Posted on Feb 28, 2009

  • 6982 Answers

SOURCE: 2001 Pathfinder screeches on start

Remove the belt and check all pulleys for smooth operation. any binding at all is amplified when belt tension is applied. also check the belt itself...If it's glazed or dried out, it can be noisy.

Posted on Apr 07, 2009

goofduck
  • 490 Answers

SOURCE: alternator belt is screeching when i start the car

tighten the belt

Posted on Apr 28, 2009

  • 82 Answers

SOURCE: screeching, annoying sound

Not without tools you won't .... I would say your local shop will fix it in less than 30 minutes and less than $50 total if it needs a belt. If it just needs tightening bring a pizza at lunch time they may fix it for lunch! A good relationship with a good mechanic is a wise investment.

Posted on May 01, 2009

  • 1206 Answers

SOURCE: how to tighten drive belt in my 92 honda accord LX?

if it gets louder when the lights are on that means its the alternator belt,and you will have to look under the alternator there you will find the manual tensioner you have to loosen the mounting bolt in order to tighten it with the long tensioner bolt.

Posted on Apr 04, 2010

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1 Answer

BMW 318i 1996 Screeching noise when car is on then slowly goes away after about 20-30 mins of driving.. Please help?


Check the belts first for cracks especially the back of the belt where it rides on the pulley.It sounds to me like one has worn out and may be just spinning causing the noise.Now another problem that will cause that noiose is the tensioner pulley.Check that as well.

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Screeching sound remains


Your AC pump is starting to faiL. It's starting to bind and putting heavy back pressure on the belt causing it slip and screech. After the car cools off inside, the load on the AC compressor is lower and the sound will die down. Also when the belt gets hot it gets a little more flexible and grippy which also lowers sound.

Take it to an auto AC repair place and have it checked.

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Short duration screech when car is started. Last longer in cold weather. Had top two belts replaced within last 24 months. apparently there are three belts.


One of the belts is loose. I would say it is the Alternator Belt.
What happens is that when you use the battery to start the car, the alternator immediately attempts to charge the battery back up once the car starts.
If the belt is loose, the belts slips some, making that horrible screech, until the battery is charged enough that the belt no longer slips, because the alternator no longer needs to make as much power, and the screech goes away.

Check to see that your alternator belt is the next one to replace, and tighten it up to specs.

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2 Answers

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You need to make sure you have a good drive belt and verify that the tension is working,if all seems normal then get the alternator or the wiring to it tested.

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Hello, I purchased a 2003 Hyundai XG350 last month. When I start the car, put AC or defrost on, and then start driving there is a screeching noise that lasts for 10 seconds and then goes away. If I stop...


See if it goes away when you turn the A/C off. The a/c comes on when you sre in the defrost so yo don't hit the windshield with hot air. The screaching is more than likely the A/C clutch trying to engage, that why it was overlooked or ignored by the mechanic. It is a common thing. The battery should be allowed to recoup from the starting of the car which a few minutes of running woll help so the a/c clutch gets full battery voltage to function.. Turning on the defrost and /or the A/c after about 3 minutes of warm up. Open your hood and have someone turn the a/c on and off, you can hear and sctually see the a/c clutch doing its irritating thing.But keep your fingers out off the engine and don't lean over it with loose clothing. Good Luck, Ned

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1 Answer

Screeching, annoying sound


Not without tools you won't .... I would say your local shop will fix it in less than 30 minutes and less than $50 total if it needs a belt. If it just needs tightening bring a pizza at lunch time they may fix it for lunch! A good relationship with a good mechanic is a wise investment.

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1 Answer

My 1999 malibu screeches loud .


Is this screeching like a sqealing? It will be a belt problem, the belt is slipping on the pulley system you may be able to adjust tension or spray on some belt dressing but will most likely need to change the belt hope this helps you,good luck

Nov 10, 2008 | 1999 Chevrolet Malibu

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