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01-07-2026, 08:00 AM
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#1 |
 Drives: 2009 yaris 2dr hatchback Join Date: Dec 2025
Location: lowest Bama
Posts: 5
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2009 hatchback alternator whinning/grinding
this new to me yaris has 80k miles on it from original owner.
he mentioned to me that his mechanic says the alternator bearing is going bad and the alternator needs replacing. i purchase a reman alt from advanced autoparts and installed. it makes just as much noise as the original did so maybe its something else....so i replaced the AC clutch and no help there. so thinking the replacement alt is also bad and had a GM mechanic friend look at it and he said he can feel the alternator grinding and said it needs to be returned. when i remove the alternator, i'm going to crank and run the engine without the belt on to see if the noise is still there. so i will report back about the results this weekend. thanks for reading, let me know what yall think. thanks, john 
Last edited by gendoc; 01-07-2026 at 08:03 AM. Reason: spelling |
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01-18-2026, 05:44 PM
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#2 |
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Drives: 2009 yaris 2dr hatchback Join Date: Dec 2025
Location: lowest Bama
Posts: 5
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changed it all, previously i changed the Alternator, then the A/C compressor clutch ... WP was the noise.....and flushed the cooling system and used Prestone ALL VEHICLE coolant.
it meets the oat and hoat specs acceptable with Toyota guidelines (i have read on the internet) The yaris now sounds like a Toyota now !! thanks |
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Today, 02:11 PM
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#3 | |
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Start another Oil Thread!
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idler pulley?
__________________
Quote:
 you nailed it sir.
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Today, 02:21 PM
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#4 | |
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Drives: 2009 yaris 2dr hatchback Join Date: Dec 2025
Location: lowest Bama
Posts: 5
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Quote:
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Today, 03:10 PM
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#5 | ||
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Start another Oil Thread!
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Quote:
__________________
Quote:
you nailed it sir.
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Today, 03:48 PM
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#6 | |
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Drives: 2009 yaris 2dr hatchback Join Date: Dec 2025
Location: lowest Bama
Posts: 5
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Quote:
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