Question about 2004 Mazda RX-8

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Squealing belts? When I turn on the a/c mostly and sometimes the heater, I hear a squealing noise. I cant figure where its coming from. Only when im driving. If I turn a/c on while parked there is no noise. Thanks

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This caused by engine rpm check belt for shine on flat side and see if you can move it up and down easily tensioner may be bad prob just old belt vote for me ok and let me know good choice of rides im a foreign mechanic

Posted on May 23, 2009

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I changed all 4 brakes on my dodge stratus and since there has been a loud squealing noise when I brake. I dont hear it when im in reverse. Its very loud when turning and braking


Most new cars come with ceramic disc brake pads to reduce noise. Aftermarket brake pads, depending upon materials in them, can be prone to squealing. Some pads come with adhesive shims that are designed to absorb vibration and reduce or stop squeal. There is also a compound you can but to put on the back of the pads to do the same thing when you install. Sometimes the noise will go away once the pads have had a chance to settle in .Some are just ornery and won't shut up.

Mar 21, 2015 | Dodge Stratus Cars & Trucks

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Hearing a pinging and squealing noise from the left front tire on my ford 500


Power steering pump may be making that noise or the belt is loose.

Feb 24, 2015 | Ford Cars & Trucks

1 Answer

Can't find the source of the squeal


Year make and model ??
The belt could be glazed and slipping even if it is tight.
You could have a weak belt tensioner too.
The noise when the ac or heat is turned on can be the extra load from the ac compressor or the alternator. The compressor cycles on and off especially in defrost mode.
The load from the alternator is the first noise of the day. As the belt warms up it becomes better at handling the load of the accessories.
Even tho the belt looks fine, you may have to replace it to get rid of the noise.

Feb 13, 2013 | Cars & Trucks

1 Answer

2000 montero sport: There's a loud squealing noise coming from the engine. What could be wrong?


Squealing is most common with loose or worn belts, I would start by replacing the drive belt on the front of the motor and go from there, Its easier to troubleshoot a squealing motor if you know that the belt or belts are good.

Oct 20, 2012 | 2000 Mitsubishi Montero Sport

1 Answer

Toyota Tercel belts are squealing


I have been having the same problem with the alternator belt squealing, most noticeably, when using the heater fan , accelerating, turning the headlights on. I have a 1997 Toyota Tercel CE 1.5L 4cyl with no A/C. I just tightened the belt tight enough that there is no give to the belt and it does not squeal anymore.

I also used a Goodyear Gatorback from Napa belt which seems to be nice and quiet when tight enough.
toyota-tercel-belts-squealing-ty2scxoafj3l5g41anllvv1v-4-2.jpg

Jan 30, 2012 | Toyota Tercel Cars & Trucks

1 Answer

My A3 is making a squealing noise when I turn on the air from inside of the car. There is what looks like a line of oil that has been sprayed over the belt on the left hand side of the engine. I was...


Check power steering and all fluids to see where this leak is coming from.
If the a/c compressor engages and the belt is oily, that could cause the squealing noise, or the compressor is bad and locking up, due to a lack of oil.

Oct 18, 2010 | 2007 Audi A3

2 Answers

Belt squealing noise when heater turned on


yes...your engine belt is little bit lose that's y its causing noise...and hope when u speed up..it will stop squealing ..right?? so just tight your engine belt little bit and it will solve your problem in a min...take care n have a safe journey...n also if it help...rate it plz

Jan 23, 2010 | 2001 Hyundai Elantra

1 Answer

Squealing noise


Check and tighten your drive belts / fan belts. The noise you are most likely hearing is the belt slipping on the alternator pulley. Its worse in the morning because the starter takes more out of the battery when the engine is cold. This in turn leaves the alternator with more load to replenish charge. More load = more resistance on the pulley to turn, hence the belt slips if too loose.
Cheers John

Dec 16, 2008 | 2003 Dodge Caravan

2 Answers

Loud squealing noise


The noise is most likely the serpentine belt. Check it's condition and that of the belt tensioner. It sounds like the belt is slipping, causing the squealing noise u describe. As the belt warms up, it's getting a better 'grip' and the noise stops. Turning on the heat also turns on the a/c in newer cars, this added drag on the belt (one more component to turn, the a/c compressor) would explain why it happens when u turn on the heat. Is the belt original? If yes, it's time to change it, and check the belt tensioner to make sure it's doing it's job of keeping the belt snug on all the pulleys. Let me know how u make out.

Dec 13, 2008 | 2003 Nissan Pathfinder

2 Answers

Squealing noise


sounds like a loose belt!!

Dec 13, 2008 | 2003 Nissan Pathfinder

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