2010 1.8 SL a/c compressor bypass - Nissan Versa Forums
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post #1 of 12 Old 07-19-2019, 08:56 PM Thread Starter
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2010 1.8 SL a/c compressor bypass

Hi all, first post here, hoping for some help.

I've searched, even found a related thread here (2007 versa), about the possibility of bypassing a 1.8SL Hatch a/c compressor. I haven't been able to find a clear answer. Does anyone know if it is possible?

I found a thread here for a 2007 stating that a bypass pulley is needed, the belt can't simply be routed without the a/c pulley as it will not properly route the water pump pulley. However, for the life of me I can't source or find a bypass pulley anywhere (and I've searched for days). Interestingly, Gates belts lists a serpentine belt for 'w/o AC' - but it is only a bit shorter than the regular belt - so that almost implies that a slightly smaller pulley is being used - and the routing diagram they show is the same diagram for with or without a/c - so again makes me think a bypass pulley is being used.

I can't afford a new compressor install, so just trying to bypass the compressor and have no a/c (or windshield defrost).

Thanks for any help!
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post #2 of 12 Old 07-20-2019, 12:33 AM
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Well I know it's not the best solution but if the compressor doesn't have bad bearings why not just leave the belt the way it is. If the clutch doesn't engage you won't have much drag on the engine.
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post #3 of 12 Old 07-20-2019, 02:38 AM Thread Starter
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Pretty sure the bearings are bad - the pulley vibrates bad at times, actually making a rattle/knocking noise. The AC did stop working, may have run out of refrigerant as I do have a leak. At one point when I had the engine running, trying to locate the noise, there was actually smoke coming from around the pulley and tensioner.
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post #4 of 12 Old 07-20-2019, 11:11 AM
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Just looked on an '11 and '10 the same. The compressor routes drivebelt to S-wrap the water pump enough to drive it, removing compressor pulley will then not wrap the pump enough to drive it. You MUST use some sort of bypass pulley. If Nissan uses one when a/c is not on the car then the belt companies will likely not list one to be bought, there is already one available from Nissan, they cannot make any money there.
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post #5 of 12 Old 07-20-2019, 02:30 PM Thread Starter
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So called Nissan parts today - the one place I didn't check with yet. While they do not have a pre-fab bypass pulley, they have encountered it before and can order a pulley for $100 and a bracket to mount it for about $60, and use this set up to bypass the a/c.

Another option is to buy a used compressor and basically just use it as a pulley - don't actually connect it to the a/c system. I guess I could then in the future hook it up to get a working a/c again. But for a 10 year old car, I'm thinking pulley/bracket - then maybe sell it in a year or so without a working a/c. I don't think I'd get my money back out of the car by installing a working a/c.
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post #6 of 12 Old 07-20-2019, 03:59 PM
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Quote:
Originally Posted by mr_fm View Post
So called Nissan parts today - the one place I didn't check with yet. While they do not have a pre-fab bypass pulley, they have encountered it before and can order a pulley for $100 and a bracket to mount it for about $60, and use this set up to bypass the a/c.

Another option is to buy a used compressor and basically just use it as a pulley - don't actually connect it to the a/c system. I guess I could then in the future hook it up to get a working a/c again. But for a 10 year old car, I'm thinking pulley/bracket - then maybe sell it in a year or so without a working a/c. I don't think I'd get my money back out of the car by installing a working a/c.
As you stated, I think the pulley/bracket is the way to go. There is no telling what the price would be if you try and get the ac up to snuff. Sometimes you may run into leaks and issues elsewhere that can drive up the price of getting it up and running. Good luck with whatever you decide.
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post #7 of 12 Old 07-20-2019, 05:45 PM
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That does suck having to go without A/C, but I hear you. It can get expensive. Did you get any ballpark estimates on getting it working?

I have found that our 2015 Versa S actually isn't too annoying with the windows down. Not nearly as bad as most every other vehicle I've owned in the past 25yrs or so.

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post #8 of 12 Old 07-21-2019, 10:11 AM
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Based on what junkyard prices are around me, I would go the used compressor route. They run $50 to $125 around here.

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post #9 of 12 Old 07-21-2019, 05:27 PM
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I don't know how realistic the idea is on Japanese cars but on domestics I buy the compressor clutch all the time by itself and all you need there and using the original compressor with it not turning. The way of the world now is forced sales of those to get both compressor and clutch in one unit but not always, you have to mess with the counter guys when they say it only comes together. Not always true.

I even go deeper to research the particular bearing needed and have changed the bearing to clutch myself to get one back up and running for less than $50 ($36). Junkyard parts and the one bolt that holds clutch on compressor and I've bought clutch alone for $10 before and lucked into one almost brand new, it had just been changed.

Not saying it's possible here but like with most things I do you don't know until you push for it. I tend to live outside of the box.
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post #10 of 12 Old 07-21-2019, 08:40 PM
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I don't know how realistic the idea is on Japanese cars but on domestics I buy the compressor clutch all the time by itself and all you need there and using the original compressor with it not turning.
For sure on that.

I don't have the resources to do this work myself in my garage, but if you do, the sky is the limit in terms of what you can dig into on the drive end of these compressors.

I love watching south main auto on youtube for this reason. Eric O takes on this type of thing all day long fixing what's broke instead of throwing crap rebuilt components onto a vehicle.

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