12-17-2019, 08:38 AM | #1 |
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squeaky belt + cold engine: Normal or Trouble?
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12-17-2019, 08:41 AM | #2 | |
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12-17-2019, 09:02 AM | #3 |
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12-17-2019, 09:08 AM | #4 | |
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It doesn't necessarily mean trouble, nor is anything major or catastrophic. I would check the belts for wear, check for tension (not too tight, not too loose), and check the pulleys to see of they are wobbling or making noise. If a bearing is bad in a pulley or 2, then that could also cause the noise. In my other car, my belt noise was caused by worn idler pulleys, and a worn tensioner. Simply replaced both, along with the belt, and it's been silent for 2 years now. Granted, that car is 13 years old with 140k miles on it. If the car is under warranty, and you don't feel like dealing with it yourself, just take it in. They should be able to get it sorted pretty quickly. |
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12-17-2019, 09:33 AM | #5 | |
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12-17-2019, 03:36 PM | #6 |
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Have you had a look at the belts with a torch with the engine running?
Could be wet / oily / salt contamination , maybe even a rodent got chewed up in the belt area. Our neighbours had a cat minced round the belts in his Audi A4, real mess. it was the belts squeaking that alerted him to that. Animals like warm engine bays in winter! if you're not sure, take it to the dealer |
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12-17-2019, 05:24 PM | #7 | |
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UK Torch = US Torch = 'Merica Last edited by silverds; 07-11-2023 at 10:32 PM.. |
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12-17-2019, 09:52 PM | #8 |
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You beat me to it! Lol
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Wife's Car: 2020 X4M Competition, Alpine White on Black Alcantara and Biege
Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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12-18-2019, 12:17 AM | #9 |
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Haha. I did think of saying flashlight but then thought not...
Your kind of (blow)torch would sort out the rodents anyway.. |
01-01-2020, 09:18 PM | #11 | |
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When I started mine up the air was about 55 degrees in 97% humidity. Did you take it in to the dealer? Was it resolved? |
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01-02-2020, 09:40 AM | #12 | |
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06-09-2020, 02:30 PM | #13 |
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Following up here in case any one else runs into this.
I started hearing this squeaking sound on the *first* cold starts every morning. The frequency of the the squeaking changed with the engine revs. I took it into the dealer, and they had it in the shop for about 4 working days and tracked it down to the harmonic balancer. The parts are on back order. |
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06-09-2020, 02:59 PM | #14 | |
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06-11-2020, 01:36 PM | #15 | |
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06-19-2020, 07:07 AM | #16 | |
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First diagnosis was that the tensioner pulley and alternator belt needed replacing, which they did. I collected my car last night and the new belt lasted less than 5 miles before it completely shredded and had to do a U-Turn back to the dealership. Update this morning is that one or more of the pulleys has seized and needs replacing. 2019 M2C, 3500 miles ☹️ Last edited by samprice99; 06-19-2020 at 07:19 AM.. |
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