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You can visually check the A/C belt for any type of damage/wear such as cracks or any high speed glazing. There is some products out there to stop belt squeeks but there only a quick band aid fix in my opinion. If one of those products were to reduce that noise you are experiencing, that i would deffinatley replace your belt.
To isolate any pulley issues, you could remove the belt and freely hand spin your idler and belt tensioner pullies to check for any excessive resistance or any ‘play’.
Have you tried to rev the engine to around 3k rpm while the A/C is activated to see if you can see any issues with the compressor locking up or any issues with the A/C clutch? or even to see if the belt tensioner is working?
Hope this helps!
Hi pschulyer,
Happy Friday. Hey, weren’t you the person that won that cool Gearbox Tool Chest from EricTheCarGuy’s giveaway contest? Congrats! I am so jealous.
Dreamer2355 makes some excellent suggestions above. With regards to the squeaking, I believe your car has three separate belts. One drive belt is for the alternator. Another drive belt is for the power steering pump. And the third drive belt for the compressor and idler. Check to see that the tension on the alternator drive belt as well as the power steering pump drive belt are correct. These belt tensions are adjusted manually A loose belt in either one of these could provide some slippage, especially as the overall load on the drive belt system increases.
If the drive belts are also old, it would be good maintenance to replace them. Good luck. Keep us posted.
kinda sounds like your ac system presure is to high and the compressor is very hard to spin over. Thus causing the belt to slip. there are plenty of things to cause this. I can give you a list pluged ac system, not enough air flow over condenser, bad valves in compressor and loose belt. best case is a lose belt. Put some guages on it and take a ride. take note of the pressures when the soud happens. Good luck
I doubt its a high pressure issue as there is a high pressure switch that will shut off power to the a/c clutch once the pressure is at a certain psi in the lines.
[b]Yes I won the Tool Box, it is awesome.
Quoted From dreamer2355:[/b]
You can visually check the A/C belt for any type of damage/wear such as cracks or any high speed glazing. There is some products out there to stop belt squeeks but there only a quick band aid fix in my opinion. If one of those products were to reduce that noise you are experiencing, that i would deffinatley replace your belt.
To isolate any pulley issues, you could remove the belt and freely hand spin your idler and belt tensioner pullies to check for any excessive resistance or any ‘play’.
Have you tried to rev the engine to around 3k rpm while the A/C is activated to see if you can see any issues with the compressor locking up or any issues with the A/C clutch? or even to see if the belt tensioner is working?
Hope this helps!
Quoted From dreamer2355:
I doubt its a high pressure issue as there is a high pressure switch that will shut off power to the a/c clutch once the pressure is at a certain psi in the lines.
yes this switch shuts off the compressor at a max high side pressure but it also truns the compressor back on at a very close to the same pressure. causing the belt to slip untill you disengage the ac or the pressure subsides.
I’m with checking the belt and it’s tension first, if it’s loose or the belt is glazed then I would replace it. If you still have the noise it could be that the compressor clutch is having an issue, at that point you might consider taking the front ot the clutch off to inspect it for overheating, if you find any replace the clutch and stator and recheck for the symptom. Remember it’s very important to get the clutch clearance correct by using the correct shims and checking it with a feeler gauge, if you get it wrong you may end up in the same place you are now so be sure to follow the installation instructions if you find that you need a compressor clutch.
[b]I removed the belt, and spun the idler pulley by hand, and it sounded like a bad roller skate. I replaced the pulley, problem gone.
Thanks for all the advice, and the toolbox is awesome.
Quoted From EricTheCarGuy:[/b]
I’m with checking the belt and it’s tension first, if it’s loose or the belt is glazed then I would replace it. If you still have the noise it could be that the compressor clutch is having an issue, at that point you might consider taking the front ot the clutch off to inspect it for overheating, if you find any replace the clutch and stator and recheck for the symptom. Remember it’s very important to get the clutch clearance correct by using the correct shims and checking it with a feeler gauge, if you get it wrong you may end up in the same place you are now so be sure to follow the installation instructions if you find that you need a compressor clutch.
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