Cascadia A/C weirdness

Belts don t make noise. Pulleys do. Your belt is either loose from a loose idler pulley or tension pulley or one of those 2 are freezing up.

 

Another common issue I had with a former cascadia I drove was the A/C blowing warm due to the water drain hose being plugged with debris .. I got into the habit of pinching the hose and often a ton of water would drain out

 

Bullschitt. Belt dressing is made & sold for the exact reason of helping to eliminate belt slippage and the noise that comes from it. I prefer a bar of soap rubbed on it while running but more than that I prefer a new belt of a high quality to replace the existing one causing an aggravating squeal.
Sometimes it's a pulley. Spray something on it while spinning and you'll know instantly whether it's the belt or a pulley.

Belts don't make noise is an inaccurate and ridiculous statement to make.

 

Not to mention that there are more pulleys in a system than just idlers and tensioners. There's a pulley on each accessory that needs driven and a pulley on the power source driving the belt - the crankshaft pulley. Alternator pulleys....a/c compressor pulleys....fan pulleys....on cars there are power steering pulleys & air pump pulleys. And for many hot rodding horsepower enthusiasts you have the supercharger/blower pulley.

None of the above are idlers or tensioners.
If you were to spray a belt that drove 16 pulleys and the noise went away - it's the belt. If it gas no effect on the noise its a pulley. Remove the belt and then spin each pulley to determine which one(s) is/are in need of replacement.
As a matter of fact I've replaced more belts than pulleys in my lifetime. I'd bet most folks have.

 

If you got a problem with a belt. Then you need to figure out why.

Belts don't make noises unless there's a problem with a pulley. Either a pulley is freezing up or not maintaining tightness. Such as a worn out tensioner. Which would cause a loose belt.

Belt dressing isn't required. But was used on occasion with v belts. Todays world is serpentine belts.

If you get antifreeze on the belt. It can make the belt stiff and go bad. OIl isn't good either.

Belt slippage. WHY is the belt slipping?????? There has to be a reason. Cuz belts don't slip when everything is working properly. They certainly don't come from the manufacture with slipping belts. And a slipping belt is a belt that's getting burned up.

Now it's possible for belts to get hard and brittle. Either from engine heat or old age. In which case you should probably be replacing it before you're left stranded somewhere.

Belts don't make noises. Nor do they require belt dressing. Unless there's a reason. And that reason should be getting fixed.

 

As a mechanic, belts do make noise. Yes even serpentine belts. Had one Tuesday squealing like a pig

 

Yes. And there's a reason why. Correct?

Mine was squealing like a pig. When the tensioner froze up.

As a retired mechanic.

 

While I am a heavy truck mechanic, I also work on the fleet vehicles for the office personnel. Yesterday, I had a newer Ford Fusion with a belt squeal on startup when cold in the morning. This particular outfit has 2 belts, one with a tensioner and one that is a “stretch” belt with no tensioner and uses a special tool to install and remove. The non tensioner belt was the one squealing. Cracked and glazed serpentine.

I am not trying to ignite controversy, but am just saying it can be just a belt with no other system parts (idlers and tensioner) failing.....