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Discussion Starter · #1 ·
Hey Guys,

For a long time my AC (clutch?) has been making a squeeling/grinding sound when the AC was off. The sound usually went away once I put the AC on. This week my AC died on my. When I put the AC on and look at the compressor (?clutch) it seems to try and engage and the plate on the clutch comes very close to stopping or moves very slowly then it kicks off again and the center plate starts spinning again.
I was wondering how to determine if it could be a clutch issue or a compressor issue or low freon issue.
Also, my car for a very long time would overheat when left idling or coming off the highway and being stopped for a while with the AC OFF. I used to always keep the AC on (I live in Florida) because it seems to me the only way the second radiator fan would ever go on. Any thoughts on this issue also? I know the fan is working but i think it should go on even without the AC once the car gets hot enought - my gauges quickly gets right below the red line.

Thanks in advance for your help or suggestions.
 

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It almost sounds like a low freon issue for your AC but the grinding sound isn't really all that great though. To check if it is a low freon issue, pull the connector on the AC canister/drier on the passenger side and put a wire between the pins to jumper it, with the HVAC control switch to AC and the car running, it should engage the clutch, if it doesn't and it acts just like what you are seeing with it plugged in, i.e. cycling or trying to engage then it is a clutch/compressor issue.

As far as overheating with the AC off, it sounds like your primary fan isn't working, check the relays in the Underhood Electrical Center on the passenger side, towards the firewall ( small black plastic box ) on the cover you will see the diagram for what relay is what, make sure the relay contacts aren't melted, this is a common problem in our cars.
 

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First problem sounds like the ac clutch is bad or does not have the proper gap, or the bearing in the pulley is bad. Think your best course of action would be to have an ac specialist check the clutch, in some cases the clutch/bearing can be replaced without replacing the entire compressor.
 
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