 Noisy Alternator Belt, FIXED! |
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| michael7810 |
 Dec 10 2016, 06:57 PM
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#1
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Senior Member  Group: Members Posts: 1,082 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region 
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My alternator belt is really noisy...it's hard to describe. Not a squeal like a loose AC belt it's more like a squeakey knocky sound. It's been getting worse for a few months...it used to go away once the engine warmed up but now it bad all the time. The belt has about 15k miles and the tension feels about right - a little play between both pulleys. I have not tried to adjust it yet. Can't remember the brand of the belt but it has a ribbed surface (i.e. not smooth belt against the pulleys). Out of desperation and because I had a can in the garage, I sprayed it with CRC Belt Conditioner and holy crap the noise got much louder (same weird noise just louder). Any recommendations for quieting it down short of replacing the belt?
TIA, Mike |
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| '73-914kid |
Dec 11 2016, 09:37 AM
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#2
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Senior Member Group: Members Posts: 1,473 Joined: 1-November 08 From: Vista, CA Member No.: 9,714 Region Association: Southern California  |
I've had good luck with both Gates XL belt you can buy from Oreilly's, as well as the Contitech belt.
BTW, back when I used to Daily Drive a 4 cylinder, the longest time I could get on a belt before it started cracking, and the belt surface polished itself (which causes the squeeking) was maybe 2 years.. |
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| Kansas 914 |
Dec 11 2016, 10:34 AM
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#3
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Advanced Member Group: Members Posts: 2,999 Joined: 1-March 03 From: Durango, Colorado Member No.: 373 Region Association: Rocky Mountains
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QUOTE('73-914kid @ Dec 11 2016, 08:37 AM)  BTW, back when I used to Daily Drive a 4 cylinder, the longest time I could get on a belt before it started cracking, and the belt surface polished itself (which causes the squeeking) was maybe 2 years.. I have your old 4 cylinder engine out while the car is being repainted and although the belt looked great I replaced it with a Gates belt. (IMG:style_emoticons/default/beer.gif) I threw the original belt in my emergency spares kit. |
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Posts in this topic
michael7810 Noisy Alternator Belt Dec 10 2016, 06:57 PM
mark04usa Check alternator mounting and bearings, since you... Dec 10 2016, 08:12 PM '73-914kid What brand is the belt? Dec 10 2016, 09:16 PM michael7810 I don't remember the brand of belt. It's ... Dec 11 2016, 07:28 AM rhodyguy Loosen the belt tension and see if the alt moves a... Dec 11 2016, 10:13 AM michael7810 Thanks. I'll try a new belt and check the brac... Dec 11 2016, 06:21 PM
Elliot Cannon
Thanks. I'll try a new belt and check the bra... Dec 11 2016, 11:01 PM michael7810 There's something jammed in there that I can... Dec 12 2016, 07:22 AM michael7810 Got it running again after rebuilding the carbs. M... Jan 5 2017, 03:04 PM rgalla9146 Not long ago a 914 friend came by with an unusual ... Jan 5 2017, 04:35 PM |
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