Bypassing the A/C compressor
#1
Bypassing the A/C compressor
Haven't been here in awhile but I still check in from time to time. Recently my A/C just stopped working and it began making a funny clanking noise, comming from the compressor. Finding out that the compressor is about $650 list (able to get $300 my cost working at a garage) was not fun. Considering its winter and I wont be using my A/C for awhile I decided not to fix it and was hoping that noise would just stop when something in the compressor broke and it would end. Well it didn't work that way. About 2-3 days ago it sounded like grinding brakes from the compressor which told me that something was even more wrong, I imagine the clutch plates were touching and rubbing and now they were just starting to grind. So needless to say I needed to bypass the compressor by changing the belt.
This was a super easy fix once we figured out the proper belt size. It was a 360K6 I believe (length 360 and 6 tooth). Routed the belt the same way bypassing the A/C compressor and no more problems.
Have no idea if this has ever been done or mentioned but I thought I would throw this info up for anyone else that may need it or is having similar problems.
This was a super easy fix once we figured out the proper belt size. It was a 360K6 I believe (length 360 and 6 tooth). Routed the belt the same way bypassing the A/C compressor and no more problems.
Have no idea if this has ever been done or mentioned but I thought I would throw this info up for anyone else that may need it or is having similar problems.
#5
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#7
Normally when the AC is not selected ON the compressor clutch is de-energized and the compressor drive pulley is not mechanically connected to the compressor shaft. The drive belt is rotating the pulley but the pulley is effectively "freewheeling" on it's two bearings. This will also occur when "the system" won't allow the compressor to operate to protect the compressor. Are you sure that the compressor pulley bearing(s) aren't the problem here?
#8
Normally when the AC is not selected ON the compressor clutch is de-energized and the compressor drive pulley is not mechanically connected to the compressor shaft. The drive belt is rotating the pulley but the pulley is effectively "freewheeling" on it's two bearings. This will also occur when "the system" won't allow the compressor to operate to protect the compressor. Are you sure that the compressor pulley bearing(s) aren't the problem here?
#9
Yikes, definitely sounds like some kind of catastrophic failure of the compressor itself and like you've suggested......this may have effectively "fused" the compressor shaft to the pulley. Mine just won't kick the compressor on (probably loss of refrigerant), and it was noisy for awhile, but at least the compressor pulley is still intact etc.
#10
ya, at first we thought the pulley was frozen and it was the belt slipping across the pulley causing the smoke, but it turned out the pulley was in fact spinning freely. The noise was horrible and loud. I was audible outside my car and very loud inside, i'm kinda guessing because it was the A/C system and it was circulating through the vents.
driven it a few times since and the noise is 100% gone so all i have to do is hope my defogger works the next time i need to use it.
I'm not exactly sure what caused this problem either. last summer my A/C went out and all it took was a refill bottle to get it back up and running, but it wasn't as cold as it used to be. So while i was driving with the A/C on it just all of a sudden get warmer and I could smell damp air(it was raining outside). I figured i ran out of refridgerant and tried to fill again and when i did that built in gauge was in the danger zone. So we we not able to fill it and i just left it as is from then till now.
driven it a few times since and the noise is 100% gone so all i have to do is hope my defogger works the next time i need to use it.
I'm not exactly sure what caused this problem either. last summer my A/C went out and all it took was a refill bottle to get it back up and running, but it wasn't as cold as it used to be. So while i was driving with the A/C on it just all of a sudden get warmer and I could smell damp air(it was raining outside). I figured i ran out of refridgerant and tried to fill again and when i did that built in gauge was in the danger zone. So we we not able to fill it and i just left it as is from then till now.
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05' MaximaMan
6th Generation Maxima (2004-2008)
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10-08-2017 06:36 PM