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Home > Technical > AC noise ++ Where is it coming from? SOLVED |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
But the Aux belt is NOT flapping or bouncing which is the usual sign of a failing Alternator pulley.
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5th Aug 2024 3:02 pm |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
Yes it can https://www.freel2.com/forum/topic25448.ht...tor+pulley You need an M10 spline for the inner part and a 33 spline for the outer (about £5 from ebay). However using an M10 spline I can turn the alternator easily one way but not the other, so the alternator Overrun Pulley (OAP) is not seized. So, in my humble opinion, its coming down to the either AC compressor clutch pulley or the compressor bearing themselves. Most people say the clutch pulley rattles at idle which mine doesnt. So its looking more like compressor bearings. Do you have to get the AC system de-gassed before removing the compressor ? Is it worth changing the compressor clutch first ? Jules |
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5th Aug 2024 3:58 pm |
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rsash Member Since: 20 Jan 2015 Location: Pineapple Picking Country Posts: 91 |
Mine has the same noise, been diagnosed as a bearing in the A/C unit which cannot be replaced (not available I believe). The whole unit will need to be changed. Although the noise is irritating i'll wait until it is unbearable. |
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5th Aug 2024 7:40 pm |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
Thanks
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5th Aug 2024 10:07 pm |
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Dave47 Member Since: 31 Aug 2014 Location: Margate Kent Posts: 1331 |
Could it be valve failure in the A/C compressor it's self,
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6th Aug 2024 9:06 am |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3107 |
A valve reacting to internal pressure would match what I thought I could hear, although changing the whole unit out should cover all possibilities. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011) FL2 Metropolis SD4 Auto 2014 2017- (16k - 77k+ miles) (MY2015) Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History (Expensive, but Trouble/Worry free - hopefully?) |
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6th Aug 2024 10:45 am |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
Im awaiting tomorrow's visit from the AC man.
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16th Aug 2024 8:33 pm |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
New AC compressor installed, flushed and regassed + lube. All lovely and quiet now.
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17th Aug 2024 5:42 pm |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3107 |
Glad you got it solved.
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17th Aug 2024 6:46 pm |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
Yes, we cable tied the radiator etc assembly to the slam panel and removed the 6 bolts holding the support bracket to gain access to the drier plug. Which was a barsteward to remove- needing a T60 IIRC Jules |
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17th Aug 2024 10:10 pm |
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scientician Member Since: 01 Aug 2024 Location: Bangor Posts: 6 |
Congratulations on the fix, must be so nice having cold air and that annoying sound not being there.
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19th Aug 2024 10:38 am |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4952 |
I obtained the AC compressor from Autoairconparts; based in Brum.
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19th Aug 2024 11:37 am |
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