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Old 02-27-2015, 12:26 PM   #1
jshaw6000
Scooby Newbie
 
Member#: 369310
Join Date: Sep 2013
Chapter/Region: SCIC
Location: Los Angeles
Vehicle:
2004 SGM FXT
VF43 - Church Tuned

Default AC Compressor Noise when engaged (video) - Is my compressor going out?

Just bought this 08 Sports XT last week. AC isn't blowing cold and compressor initially didn't turn on. Added r134a, and now it does, but with a weird ratcheting/scratching sort of noise. My brother said it sounded like the buzzing from high-voltage power lines. It only happens when the compressor kicks in. I know the compressors do make a noise like this when they're on but all the ones I've heard are MUCH quieter. According to the previous owner, "the AC was blowing cold in August. [he] hasn't used it in a while". I'm guessing the compressor was sitting motionless without oil for so long that the internal piston may be going bad. Do I need a new compressor? Should I run it like this for an extended period of time?
Also, the belt is fraying, but I've already bought a replacement.


More detailed info:
Hey all, just bought an 08 Sports XT last week. Went to go use the AC a few days ago and noticed the compressor didn't turn on when I pushed the button. Called my mechanic, he said the system could be empty and to buy a recharge bottle. I bought a bottle and started to fill it up, sure enough when pressure was added to the system again it kicked back in, albeit with a weird ratcheting, scratching sound. I filled it up to the recommended pressure but noticed it wasn't blowing that cold. Tired, I called it quits for the night.
The next morning I went outside to test it. Turned the AC on and the compressor didn't turn on... hmm. I connected the bottle and noticed the pressure was low. Added a tiny bit more r134a and the compressor kicked back in. When I was filling I noticed that every time the needle would land on the recommended pressure and then fall off when I released the fill lever. There must be a leak somewhere.
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Old 02-27-2015, 04:46 PM   #2
Bacon117
Scooby Specialist
 
Member#: 118500
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: Michigan
Vehicle:
02 Silver Wagon
"Stage 2"

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Sounds like a bad bearing in the compressor to me.
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Old 03-01-2015, 12:32 PM   #3
jshaw6000
Scooby Newbie
 
Member#: 369310
Join Date: Sep 2013
Chapter/Region: SCIC
Location: Los Angeles
Vehicle:
2004 SGM FXT
VF43 - Church Tuned

Default

Took it to a shop. They say I need a new compressor :/
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Old 03-01-2015, 02:30 PM   #4
575rider
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Member#: 112024
Join Date: Apr 2006
Chapter/Region: NWIC
Location: Bends epic singletrack
Vehicle:
03 hybrid 6spd wgn
Santa Cruz Carbon Bronson

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Look around for used, I picked one up for $100. New prices are ridiculous.
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