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First Generation 2004-2006.5 [NCP31]

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Old 06-10-2010, 12:01 AM   #1
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Default 2005 scion xb with a really bad belt squeal.

Hi guys, i recently put a new water pump in my xb cuz the old one was leaking fluid. i also changed my belts. i kept getting a belt squeal when i use my a/c. it only did it when i used my a/c. i tried adjusting it to no avail. so i thought maybe i had a bad alternator belt. i replaced it today. now im getting the squeal with or without the ac being off. i dont know what im doing wrong. one of my buddies said maybe the ac compressor bearing was going out. if anyone has any advice id greatly appreciate it. i really dont want to take it to a shop. but cuz i live in Vegas i need my ac. thanks in advanced.
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Old 06-10-2010, 01:12 AM   #2
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FWIK, it could be misaligned pulleys, bad tensioner, or pulley bearings. Try belt dressing just to see what happens.
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Old 06-10-2010, 02:52 AM   #3
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Make sure the belt is tight...
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Old 06-10-2010, 04:10 AM   #4
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You did loosen ALL the bolts for the compressor right? Cos your description doesn't sound like you did.
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Old 06-10-2010, 09:11 AM   #5
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hi guys, thanks for advice. To james no i havent even touched the compressor let alone the bolts for it. im starting to think im not tightening belt enough. i let the car idle for a few minutes and looked at the belt. the power steering belt is moving but looks tight but when i look at the alternator belt it looks like its flapping around. i thought maybe my eyes were playing a trick on me cuz its spinning pretty fast. im gonna try and tighten it more and see if that does anything. when i adjust belt im doing it from the alternator and i only pull the alternator back by hand and then tighten bolts. ive read in a couple forums to use a screwdriver to pull alternator back so it seems most likely im not putting enough tension on belt. ive also read though that if u tighten it too much itll mess up the waterpump and i dont want to do that since i just replaced it. i wont use belt dressing cuz its a new belt and is not a long term solution.
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Old 06-10-2010, 10:59 AM   #6
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In my experience, it was really hard to get the serpentine belt tight enough without an extra set of hands (one to pry the alternator into place, another to actually tighten it).
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Old 06-10-2010, 02:16 PM   #7
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I think the belt dressing was suggested to help you narrow down your search for the noise

sounds like you just need to tighten your belt though
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Old 06-10-2010, 07:55 PM   #8
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update guys, i got home from work this morning nd adjusted the belt. i got it as tight as i could. i took it for a test drive and it didnt squeel at all. my wife took it to work and she text me that it did chirp a little but thats it. i can live with a little chirping since thats what its done the last three years we've owned it. thanks guys for all the help
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Old 06-10-2010, 07:55 PM
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2005, ac, bad, belt, compressor, diy, power, pump, replaced, scion, serpentine, squeak, squeal, squealing, steering, tighten, water, xa, xb


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