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07-09-2010, 12:59 PM
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#1 |
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All About the BOWTIE
Join Date: May 2010
Location: Los Banos, California
Posts: 436
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A/C Rattle
My A/C works geat... typical for these trucks.. nice and cold during non-stop trips... cool at best during stop and go traffic... not bad for a 26 year old unit.. thing is, is that during low R.P.Ms, or let's say at a stop light.. the compressor rattles... only sometimes...if i put it in neutral.. RPM"S go up.. rattles stops... good to go... looked under the hood... belt is good and tight.. not very much play in it... but when I have it in gear... with A/C on.. I looked under the hood.. and the belt is just flappin away.... can't see tightening any more... it seems tight enough, I know your not suppose to to put too much strain on these pulleys.... is this normal for these compressor's? thanks in advance for any input.
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CaliDude76  "... Being "SQUARE".. is where it's at...."  Proverbs 15:30 .... "A Cheerful look brings joy to the heart, and good news gives health to the bones..." Be exceedingly blessed today, my friends!... Last edited by CaliDude76; 07-09-2010 at 01:04 PM. |
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07-09-2010, 01:03 PM
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#2 |
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All About the BOWTIE
Join Date: May 2010
Location: Los Banos, California
Posts: 436
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Re: A/C Rattle
the belt flops right there under the upper radiator hose...
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CaliDude76 "... Being "SQUARE".. is where it's at...." Proverbs 15:30 .... "A Cheerful look brings joy to the heart, and good news gives health to the bones..." Be exceedingly blessed today, my friends!... Last edited by CaliDude76; 07-09-2010 at 01:03 PM. |
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07-09-2010, 01:11 PM
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#3 |
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Registered User
Join Date: Oct 2003
Location: houston, texas
Posts: 26
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Re: A/C Rattle
my original compressor and my new compressor... both GM Harrisons.. rattled from the beginning.. and i am not sure why. Only recently has the new one started to quiet down a little. But i can still hear it slightly. Works great tho..
Jeff |
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07-09-2010, 02:29 PM
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#4 |
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On a budget like Fred Sanford
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
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Re: A/C Rattle
Mine does the same thing, kind of a growling sound. I've never noticed my belt moving, but if my idle rpm drops under 750 then it rattles. Anything over 750rpm and it goes away. Works great though!
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD |
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07-09-2010, 04:16 PM
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#5 |
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Registered User
Join Date: Jun 2007
Location: Cape Coral, Florida
Posts: 1,123
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Re: A/C Rattle
My 86 make a "growling" noise when the a/c is on at idle only. Otherwise shes quiet. Mine seems to still blow nice & cold at idle too.
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