Question about 2003 Toyota Corolla

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My AC has quit working. the belt is still turning

My AC has quit working. the belt is still turning but it doesn't sound like the compressor is coming on

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AC clutch relay is common problem. located in the under hood fuse box labeled M/G CLT. $11 rockauto.com

Posted on Aug 23, 2010

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A car we had the AC quit working so we took it off. well you could not line the belt up so my mechanic installed the air compressor pump back on but left the hoses off so the compressor just turned with no pressure.He said that we had no alternative but put it back on. It ran several years after that. If you can't make that work go to a wrecking yard and get a junker compressor that turns.

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It sounds to me that your belt or tensioner is worn, if the noise goes away when the ac is off then it is just the belt slipping, it takes a lot of power to run the compressor and if the belt is worn it most likely slipping on the pully when you engage the clutch.

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I have a 2006 Mazda3. I noticed whenever my air conditioner or heat is on it makes a sound like a lawn mower when I acceralate. Any ideas of what this could be ?


Well, I think you can rule out the AC/heater fan inside the car. That would make noise even just sitting in the driveway.

Many/most vehicles are designed to run the AC compressor not only when the AC is on but also when the defroster is on. This is to keep the AC compressor lubricated through the winter months also.

It should not be a belt problem as that belt is always turning anyway which should then rule out the pulley bearing at the AC compressor.

I do suspect your problem is a major internal failure of the AC compressor. This can be easily checked by a technician [or yourself if qualified]. Locate the electrical connector at or to the AC compressor. Two people: With the AC turned on, in park, increase the engine speed so you can here the noise. Disconnect the AC compressor electrical connector. If the noise stops instantly, the compressor has failed. A quite expensive repair. Have a reputable shop locate a re-manufactured compressor for you. That will help some on the cost.
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1999 VW Passat AC/heat doesn't work? The belt broke this summer? I was told should still blow heat even if no belt?


If you are talking about the belt for the ac compressor, yes the heater should still work.
If the blower is not working, you will need to have the blower motor checked for voltage and ground.

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I have numerous proglems. I have a 2000 intrique. The right back signal light blinks very fast, doesn't work in the front. The ac blower works fine but blows warm air.A mechanic , someone my hysband...


Your rear turn signal flashes fast because the front is not working. Most likely you have a burnt out bulb in the front. If your A/C compressor can be turned over by hand and doesn't lock up or make any clanking sounds it's probably alright. The compressor will not run if the system is low on refrigerant. If you're having problems with the A/C and heater controls, that would be the first ting to repair. It doesn't sound at all like any electrical problems.

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When I tried turn on air cond. or heater the motor try die on me what is that? it's on my 2004 trailblazer


Bad compressor this work also when heater is on. To check have someone turn on ac/heater make sure clutch on air comp is turning. If not comp clutch is frozen

Jun 05, 2011 | 2004 Chevrolet TrailBlazer

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A/c quit but does have pressure in system and light on in panel. Compressor clutch not engaged, belt is turning pully.


This sounds like the compressor has failed. With AC in on position the compressor clutch should engage/disengage periodically while turning. A couple things to check before replacing this is the following.

1)Check the fuse panel to ensure there is power getting to that part of the sysem.

2)Check the wiring harness itself and make sure the connection is tight, free of dirt, debris and is in good shape.

If those two are okay, I would replace compressor and recharge the system and it should work properly.

Let me know,

Chip

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Noise when I start car, then it quits. Noise comes on if I turn the fan or AC on. I inspected the fan and didnt see anything that it was rubing against. What is causing the noise?


this is possibly a belt slipping possible from a tight compressor unit which is belt driven.Remove belt and feel the load on the compressor by hand...it should turn with some drag but quite freely.

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Pop the hood, start the vehicle and turn the AC on. Watch the compressor, it should have a center that rotates on an off and you should hear a clicking sound. This is the compressor clutch you are looking at. If the compressor is not doing this, check the fuses for the AC. If the fuses are good, then most likely the high side sensor switch is not working, therefore the clutch never engages and the air never gets cold.

Try that and get back to me, ok?

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Alternator Belt


TAKE A ROPE AND RUN IT AS IF IT WERE A BELT ALONG THE ALTERNATOR AND CRANKSHAFT. MEASURE THE LENGTH OF ROPE THEN GO TO PARTS STORE TO BUY A SMALLER BELT. THE IDEA IS TO BYPASS THE AC BEING A 94 IM SURE IT HASN'T WORKED IN QUITE SOME TIME, I'VE BEEN A MECHANIC FOR 8 YEARS AND WE BYPASS THESE ALL THE TIME, THE TENSIONER ON THAT CAR I BELIEVE IS ON THE ALTERNATOR, HONDA MADE THE AC OPTIONAL.. BELTS ARE USUALLY NAMED AFTER THERE SIZE (IE 4060934 IS 93.4 INCHES LONG) IF NEED BE REMOVE THE AC COMPRESSOR.

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