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12-24-2022, 10:12 AM | #1 |
Scooby Newbie
Member#: 436074
Join Date: Dec 2015
Vehicle:2012 Impreza Base |
Squeal on Cold Start
A month ago my 2012 Impreza started squealing loudly on startup. It always goes away after a few seconds.
So far I have changed the belt, the tensioner, and both idler pulleys. I also noticed that the alternator pulley was squeaking when turned by hand. Had the dealer test the starter, alternator and battery - all good. The tech was unconcerned about the alternator squeak. The noise got much much quieter after all this, but still present. Today being the coldest day yet, the squealing was louder and took much longer to stop when driving the car to warm it up. It was intermittent but still there for the first 3 miles or so of driving. Any ideas on what this could be? Sent from my iPhone using NASIOC
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12-24-2022, 03:10 PM | #2 | |
Scooby Specialist
Member#: 283429
Join Date: May 2011
Chapter/Region:
South East
Location: Down yonder.
Vehicle:2016 Fuji Sunfire 03 Silver |
Quote:
Otherwise: This is where you get yourself a mechanics stethoscope, have someone start the engine cold and you listen to the non-moving parts nearest each pulley until you locate the one with the loudest, sharpest, clearest sounding squeal. |
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12-24-2022, 04:04 PM | #3 | |
Scooby Newbie
Member#: 436074
Join Date: Dec 2015
Vehicle:2012 Impreza Base |
Quote:
Thanks for the info! Turns out I just got the new belt without knowing about the TSB. I’m going to follow the advice here on listening cold. I don’t know why this didn’t occur to me. Good thing I already eliminated 3 idler pulleys and the tensioner. I guess all I have is alternator, water pump, AC. Sent from my iPhone using NASIOC |
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12-24-2022, 08:22 PM | #4 |
Scooby Newbie
Member#: 436074
Join Date: Dec 2015
Vehicle:2012 Impreza Base |
@Elbert Bass since I replaced the idler pulleys I assume it’s a waste of time listening to them? I’m asking because it seems like I have 1/2 chances per day to test this.
Sent from my iPhone using NASIOC |
12-25-2022, 12:15 PM | #5 | |
Scooby Specialist
Member#: 283429
Join Date: May 2011
Chapter/Region:
South East
Location: Down yonder.
Vehicle:2016 Fuji Sunfire 03 Silver |
Quote:
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12-25-2022, 05:10 PM | #6 | |
Scooby Newbie
Member#: 436074
Join Date: Dec 2015
Vehicle:2012 Impreza Base |
Quote:
I replaced the tensioner too. It’s the Subaru part. How could the new pulleys be making noise? Sent from my iPhone using NASIOC |
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12-26-2022, 01:41 PM | #7 | |
Scooby Specialist
Member#: 283429
Join Date: May 2011
Chapter/Region:
South East
Location: Down yonder.
Vehicle:2016 Fuji Sunfire 03 Silver |
Quote:
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12-28-2022, 08:19 PM | #8 | |
Scooby Newbie
Member#: 436074
Join Date: Dec 2015
Vehicle:2012 Impreza Base |
Quote:
I originally used a Gates but I got suspicious that maybe it’s a hair longer than the oem belt. So I replaced it with the one belt from the tsb. This last weekend during the deep freeze it squeezed for a good while. It’s weird because this never happened with my original belt until the noise started. Sent from my iPhone using NASIOC |
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12-29-2022, 12:11 AM | #9 |
Scooby Newbie
Member#: 525652
Join Date: Jul 2021
Chapter/Region:
SWIC
Location: Tucson, AZ
Vehicle:2006 STI WR Blue |
Cold will make the belt squeal. It stops as the belt warms up from friction. I belt if you leave it be until weather gets warm again, the issue resolves itself. Especially if you've already replaced the belt and idler pulleys.
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12-29-2022, 08:51 AM | #10 | |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
Quote:
It should never squeal even when cold.... |
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02-07-2023, 09:44 PM | #12 |
Scooby Newbie
Member#: 525564
Join Date: Jul 2021
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Moisture on the belts ,one of the pullies is on the way out or adjust your tension use a long screwdriver ,hose or a mechanics stethoscope to isolate
Last edited by thewraith420; 02-07-2023 at 09:47 PM. Reason: Adding more info |
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