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Author Topic: Non-SM car question: belt tension
Sphinx Verified Driver
M. Yusuf Mohamed

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Our family beater is a 2000 Infiniti G20 (SR20DE engined). It's got two belts, one that runs the alternator and AC and one that runs the water pump and power steering.

I recently replaced the alternator and both belts. Now, I get this nasty squeel when I start up the AC at idle. It only squeels at idle and then up to about 15 mph, at which point it stops. After the first time, it usually won't come back, regardless of engine speed.

Before I go messing with the belt, do these symptoms indicate a lose or a tight belt? I thought I had the tension right with the finger test, but obviously, my finger needs to be recalibrated.

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Sphinx Racing
Atlanta Region
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http://www.layersdesserts.com
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Colin MacLean Verified Driver
Fly Fifer

Region: Atlanta
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Squealing usually means loose but it may also be the bearings in the A/C unit.

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Colin MacLean
Flyin' MacLean Motorsports

wheel Verified Driver Made Donation to Website
Member

Region: kc
Car #: 20
Year : 92
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A failing ps pump, or ac compressor can cause belt squeeling, as they refuse to spin up quickly.

Sphinx Verified Driver
M. Yusuf Mohamed

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I don't think either is failing. The squeel was noticed the first time I turned on the AC after replacing the belt.

I got the car fixed and on the road last Tuesday and Wednesday noticed the belt.

For my own information, if the belt was too tight, would there be any symptoms?

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Sphinx Racing
Atlanta Region
http://www.sphinxracing.com
http://www.layersdesserts.com
Support our racing efforts by shopping at your favorite online merchants at SphinxRacing.com!

Greg Bush Verified Driver
Thread Killer

Region: NW/OR
Car #: 04
Year : 90
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If it was too tight you would know it when one of the things the belt turns burns up a bearing.

When its too loose, it squeals.

Keith in WA Verified Driver Made Donation to Website
Pack Fodder

Region: NWR / Oregon
Car #: 88
Year : 95
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If the belt isn't sitting squarely in the grooves on the pulley it will also squeel. Just found that one out in the garage.

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Keith Novak
(Will work for tires)

   

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