Noisy ac compressor at idle - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cochino12 · 05-29-2009, 04:30 PM

So I just changed the siezed up ac compressor in my work truck, charged it with 3 cans of freon and it gets cold and works like it should. The one problem I am having is at idle it makes a grinding noise? Did I put too much freon in maybe? the compressor has oil? any suggestions?

gchemist · 05-30-2009, 10:25 PM

Is the compressor rebuilt or new? I had one that sound like that at idle. It worked for a long time before it blew up.

**old Rusty C10** · 05-31-2009, 12:57 PM

is it the clutch ( only happens when ac is on) or the bearing (all the time) if its the bearing that compressor is on it s way south too

swb85 · 06-01-2009, 11:44 AM

Mine does the same thing if the idle rpm drops below 650, growls real bad. Anything above that and it doesn't growl. No idea what is making the noise......It's a reman compressor and blows cold/works fine otherwise.

05-29-2009, 04:30 PM	#1
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Noisy ac compressor at idle So I just changed the siezed up ac compressor in my work truck, charged it with 3 cans of freon and it gets cold and works like it should. The one problem I am having is at idle it makes a grinding noise? Did I put too much freon in maybe? the compressor has oil? any suggestions? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

05-30-2009, 10:25 PM	#2
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Noisy ac compressor at idle Is the compressor rebuilt or new? I had one that sound like that at idle. It worked for a long time before it blew up. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

05-31-2009, 12:57 PM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,277	Re: Noisy ac compressor at idle is it the clutch ( only happens when ac is on) or the bearing (all the time) if its the bearing that compressor is on it s way south too __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

06-01-2009, 11:44 AM	#4
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: Noisy ac compressor at idle Mine does the same thing if the idle rpm drops below 650, growls real bad. Anything above that and it doesn't growl. No idea what is making the noise......It's a reman compressor and blows cold/works fine otherwise. __________________ '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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