AC Squeals - Light Weight Crank Pulley?
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AC Squeals - Idler Pulley? Videos Added
My car: 96' civic hatchback with b18b1 swap
EDIT: More Videos Posted Blow 5/4
When I got the swap, the original crank pulley was damaged to crap, so I decided to get a lightweight VMS Crank Pulley for $90. When I got the car running, i flipped on my air conditioning and while under load their is a loud shrEEEEEEKing noise coming from under the hood. I know it's the AC because as soon as I turn it off, the noise goes away.
I checked my belt for tension, and it seems to be alright (I can twist it 90 degrees), and I also cannot tighten it anymore than it already is.
Could my light weight crankshaft pulley be throwing off the weight proportion for the AC belt? My alternator seems to be running fine.
Any input is appreciated, thanks.
Heres a pic of the pulley:
EDIT: More Videos Posted Blow 5/4
When I got the swap, the original crank pulley was damaged to crap, so I decided to get a lightweight VMS Crank Pulley for $90. When I got the car running, i flipped on my air conditioning and while under load their is a loud shrEEEEEEKing noise coming from under the hood. I know it's the AC because as soon as I turn it off, the noise goes away.
I checked my belt for tension, and it seems to be alright (I can twist it 90 degrees), and I also cannot tighten it anymore than it already is.
Could my light weight crankshaft pulley be throwing off the weight proportion for the AC belt? My alternator seems to be running fine.
Any input is appreciated, thanks.
Heres a pic of the pulley:
Last edited by FeelTheBass; 05-04-2014 at 09:05 PM.
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Re: AC Squeals - Light Weight Crank Pulley?
I am using the correct belt, ordered from RockAuto. Also, the lightweight pulley is the exact size of the OEM pulley and is made of Billet Aluminum weighing 1 pound 15 ounces.
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Re: AC Squeals - Light Weight Crank Pulley?
Stick your head under the hood with the car and A/C running and VERIFY where the squealing is coming from and stop speculating. More than likely it's the compressor clutch. Did you check for proper tensioning of the belt?
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Re: AC Squeals - Light Weight Crank Pulley?
But my A/C was running perfectly with my y7 in the car, so how could it be the compressor? In the OP I stated that I could twist the belt 90 degrees, which i was told was correct tension.
I'll go check it out again soon.
I'll go check it out again soon.
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Re: AC Squeals - Light Weight Crank Pulley?
Here are some videos:
Checking the tension:
https://vimeo.com/93447533
Hearing the noise at Idle:
https://vimeo.com/93450215
Another bit of info, when the A/C is on and the compressor stops spinning/condenser fan turns off for a bit, the sound goes away. Is this an obvious sign that it is my A/C compressor bearing?
Checking the tension:
https://vimeo.com/93447533
Hearing the noise at Idle:
https://vimeo.com/93450215
Another bit of info, when the A/C is on and the compressor stops spinning/condenser fan turns off for a bit, the sound goes away. Is this an obvious sign that it is my A/C compressor bearing?
Last edited by FeelTheBass; 04-30-2014 at 09:02 PM.
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Re: AC Squeals - Light Weight Crank Pulley?
That or the bearing in your tensioner. If you can get a long screw driver (or mechanics stethoscope, can be had pretty cheap at harbor freight) and put the handle to your ear and put it on the bearing at the tensioner and then at your compressor you should be able to pin point it pretty easily.
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Re: AC Squeals - Light Weight Crank Pulley?
That or the bearing in your tensioner. If you can get a long screw driver (or mechanics stethoscope, can be had pretty cheap at harbor freight) and put the handle to your ear and put it on the bearing at the tensioner and then at your compressor you should be able to pin point it pretty easily.
I'll post results tomorrow.
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Re: AC Squeals - Light Weight Crank Pulley?
When I pulled out my y7 I took it off and put it on my b18b1, the b18b1 sat for a few days in the garage before I swapped it in. What effect would this have on it?
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Re: AC Squeals - Light Weight Crank Pulley?
it wouldn't. Maybe if it wasn't handled with care, but an AC compressor sitting for a few days, few weeks, wont hurt it. I doubt sitting for a month or more would even hurt it. Years, maybe it would..
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Re: AC Squeals - Light Weight Crank Pulley?
That or the bearing in your tensioner. If you can get a long screw driver (or mechanics stethoscope, can be had pretty cheap at harbor freight) and put the handle to your ear and put it on the bearing at the tensioner and then at your compressor you should be able to pin point it pretty easily.
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Re: AC Squeals - Light Weight Crank Pulley?
I'll perform the long screw driver trick before removing the belt to see if I can pin point it.
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Re: AC Squeals - Light Weight Crank Pulley?
Saw this today and interested me into thinking it could be the A/C compressor bearing, when I open the throttle high enough, the A/C compressor "skips". Check out the video
Skip to 0:16 if you don't want to wait
https://vimeo.com/93937006
Tried the screw driver trick, and also used a breaker bar and couldn't really pin point it because the A/C compressor and Idler pulley are so close.
Skip to 0:16 if you don't want to wait
https://vimeo.com/93937006
Tried the screw driver trick, and also used a breaker bar and couldn't really pin point it because the A/C compressor and Idler pulley are so close.
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Re: AC Squeals - Light Weight Crank Pulley?
seriously OP. What do your crank pullys weigh in at?
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Re: AC Squeals - Light Weight Crank Pulley?
My VMS pulley weighs 1 pound 15 ounces.