Elantra XD (2001-06) :: Noise Coming From Compressor Only When AC Is Off
Oct 11, 2015
My dad bought this car some time ago and it didn't have those parts (AC belt pulley, belt and High line cap, that sky-blue thing) but we didn't care, looks like the previous owner didn't use the AC system that much. Well, I had some time to put things to work, so I put the AC belt pulley, bought the belt (4PK810), found the cap and guess what, the AC works just fine!
But... there's this noise coming from the compressor ONLY when the AC is off. When I turn the AC on, that "thing" on the compressor starts to rotate and the noise disappears, and it comes back when it stops.
The compressor's clutch is at fault here? I've read a bit about it and maybe is that thing.
Or maybe the compressor just needs some maintenance after not being used for so long... What do you think?
The compressor is a HCC HS-15, like THIS ONE. The model is different, mine being CD1AA-03 and that one AKTCC-04.
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Having problem with my car (2001 Elantra GT) - over the last month or so it's been occasionally making a very loud (not but consistent) grinding noise coming from the front of the car when decelerating at low speeds. The noise sounds like gears slipping over each other but cuts in and out. It's pretty loud and not a nice noise to hear! Sometimes it makes the noise when I brake firmy but not until I reach lower speeds... mostly it's just when coming to a stop, but it did it once last week when I was pulling very slowly out of a parking spot and not even braking.
As it's become more frequent (going form maybe once a week to several times every car journey) I have started to feel something in the brake pedal also, like there's something kicking it from behind. I took it to a mechanic and had to pay a ton of money to get a broken front left ABS ring replaced (it also had the front right ring replaced in May), and within 2 minutes of driving away from the place the noise was back. Before I spend even more money that I don't have on taking it back for extra diagnosis.
I'm told that this is almost certainly the ABS system that has a fault even though the ABS light never shows except when I start the car, and I've taken the fuses out of the ABS in order to confirm that it is. I haven't heard the noise after a few days of driving with ABS unplugged so I think we can be reasonably sure here. Is there anything that I can check myself or test (I'm not very handy when it comes to cars) or can you tell from this information what it's likely to be? Other things that I've noticed with the car which may or may not be relevant are:
- the warning lights for brakes, ABS and TCS are all lit with the fuses for ABS1 and ABS2 taken out. I take it this is normal for all 3 to illuminate with the fuses out?
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Everyone I talked to said it sounded like it needed new pads so tonight I bought new brake pads and rotors for the front and got everything taken apart. The rotors didn't look bad at all, just some light surface scratches, nothing deep, no warping I could see, and the brake pads look almost brand new. I did notice that the inside brake pad on the passenger side was missing its little metal plate that is usually between the caliper and the pad, so I went ahead and replaced all of the brake pads hoping this lost metal plate was the issue.
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Does the a/c clutch have a history with its bearings ? Is the clutch replaceable on the compressor or is this a single unit replacement ?
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Here is the video i was referring to in comparison - YouTube
It sort of sounds like this but a little less intense. Its definitely knocking but not as loud as the video. It does it all the time, not only when its cold but when its warm too... Its always sounded like that but I haven't ever paid any attention to it.
Anyways... after a whole day of reading about gas and octane and all that fun stuff I am not sure whether to try midgrade or primium gas...
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