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need to know what this part is
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keywestb
New User
Jul 6, 2009, 9:16 AM
Post #1 of 7
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need to know what this part is
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1999 mazda 626 - 4 cyl
Hi, I found the leak in the a/c system when I attempted to recharge it. The coolant/oil/dye leaked out through this part. Initially as the charge progressed, the compressor started to cycle and started to cool. That was for a few minutes, and then the pressure dropped too low. But like I suspected due to wetness and oil spots after it initially died, this part is where the leak appeared while I was trying to charge.
It is on the "head" or connection of one of the hoses to the compressor. It's a brass nut with a center tube like piece. To me, it looks like the high pressure safety release on my old fashioned espresso pot.
Is it a release valve?
what is it called?
Can I replace it? looks like it would come out with a wrench, or do I need to do it from the other side?
Where could I find it?
Two pictures below. One of the connection showing the part, one of my old espresso pot.
Thanks for any help. If I can't fix it, I spend a south florida summer without the ac. javascript: addTag('crazy')
Brian.
(This post was edited by keywestb on Jul 6, 2009, 9:27 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 6, 2009, 11:07 AM
Post #2 of 7
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Re: need to know what this part is
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That is exactly what it is. Your system have a complete blockage in the system. That's why you pressure appeared to drop but in reality, it went sky high in the compressor area. You need to find the restriction and repair it and if your not using gauges with both high and low readings, you need to stop immediately and get a set of real gauges before attempting to do anything else to this car.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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keywestb
New User
Jul 6, 2009, 11:40 AM
Post #3 of 7
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Re: need to know what this part is
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Thanks Hammer Time,
Is there somewhere on this site that shows how the gauges are connected / used?
I do understand why you are suggesting that path. Yet to me, it seemed more like a failure of that valve as opposed to operating properly. I was partly through the can when the compressor started cycling, and it had also started to cool but the leaking out was faster than the influx. If there was that kind of blockage on the compression end, could it have indeed started to cool?
Is it not possible for a valve like that to fail and leak with normal pressure?
I understand the precaution suggested however. What would I be looking for on hi and lo end gauges?
And for some reason, I just couldn't get the photos to appear. It looked like it went ok, but no pics.
Thanks.......brian
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 6, 2009, 11:45 AM
Post #4 of 7
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Re: need to know what this part is
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It is possible for a blow off valve to leak but it is usually the result of a previous pressure overload and pressure is likely still the cause. You need to know the pressures as refrigerant is being put in or things could go real wrong. If that valve is really seeing high pressure, then you are realy close to frying your compressor or exploding a hose.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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keywestb
New User
Jul 6, 2009, 11:52 AM
Post #5 of 7
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Re: need to know what this part is
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Thanks Hammer Time,
I may need to work at saving up and having someone take care of this. : ( I'm good at advice regarding painting or gardening............. cars, not so much.
Thanks again........brian
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jul 9, 2009, 5:10 AM
Post #6 of 7
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Re: need to know what this part is
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Gardening! Brian - tell me what the Lilac blight is in my area? I'm an avid Syinga Vulgaris aficionado and losing them - hybrids and all with strange problem??
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Back to the A/C. Hammer hit the nail on the head and the blowout did it thing no doubt. They don't always seal again when pressure drops and might need to be replaced. How did you charge this? If you blasted in too much or too much refrigerant the wrong way it would blow out and possible damage result!
You need to use exact weights and the newer the vehicle the more sensitive to have exacting amounts.
The link is right here at this very site .........
http://autoforums.carjunky.com/..._A/C_SYSTEMS_P45460/
T
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keywestb
New User
Jul 9, 2009, 2:11 PM
Post #7 of 7
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Re: need to know what this part is
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Hi Tom,
First....... your lilac issues.......
I haven't lived up north for over twenty years (Cleveland OH), but am happy to see if I can find out what the issue is. Just like you know exactly what to research if you have a car problem, it's like that for plants with me.
I do need to know symptoms, visual signs, physical observations eg; insects, coloring changes, discoloration patterns etc. Lilacs typically have several issues in less than ideal conditions. They can be bacterial, virus, insects, passed by insects, fungus etc. Less straightforward than mechanics and more like doctoring, since we are dealing with pathologies. So tell me what you can.
If you don't care to continue the garden talk here, just email me at briankowalski@ymail.com and give me a couple days to track down the issues.
Re: A/C
First, since I wasn't able to make the photo's appear regarding the part, I posted it at:
http://www.flickr.com/photos/40153924@N05/3696237914/
To charge it I used this product..............
Interdynamics AFK12 - Arctic Freeze Auto Air Conditioning R-134A Smart-Charge Kit . It had an all in one electronic "gauge" that the can screwed into.
I used only the can that came with it, which was I believe 14 oz. The escape at the valve was not violent but bubbly and oozy, which leads me to believe the valve is faulty.
By reading other posts over the last few days, I have begun inspecting other issues. This was a used car when I bought it a couple years ago, and I know some of the insides are not original, like I had no motor mounts!
Anyway, like other posters asked about, even when it was working good, it would always blow warm air when I was at a stop at a light or such, then cool again when I was moving. Today I checked, and I have yet to witness any movement with the two fans on the radiator. I bought the corrosponding fuses today, and will see if that corrects that issue. This is becoming and interesting process.
Just so you don't think I'm too nuts, I did wear goggles and rubber gloves when doing the charge.
thanks again. brian
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