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      02-20-2017, 02:16 PM   #1
uisim
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Doing an a/c flush. What psi high side?

So I'm gonna do a fresh fill of r134 as my a/c may have a small leak. What psi should I see at the high pressure port. I'm shooting for 35or so psi on the low side but can not for the life of me find the specs for the high pressure port. Anybody have a link on a diy or at least know this spec. From what I remember it's 125 -300 on the high side but that's a big gap and not something to toy with.
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      02-21-2017, 11:37 AM   #2
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Quote:
Originally Posted by uisim
So I'm gonna do a fresh fill of r134 as my a/c may have a small leak. What psi should I see at the high pressure port. I'm shooting for 35or so psi on the low side but can not for the life of me find the specs for the high pressure port. Anybody have a link on a diy or at least know this spec. From what I remember it's 125 -300 on the high side but that's a big gap and not something to toy with.
Get it done professionally. pressures will vary with ambient temps. You can easily under or overcharge the system. There isn't a set pressure, there is a set charge capacity.
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      02-22-2017, 12:27 AM   #3
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Originally Posted by Uber///M View Post
Get it done professionally. pressures will vary with ambient temps. You can easily under or overcharge the system. There isn't a set pressure, there is a set charge capacity.
Eh I've done it before. I had a temp chart but it was from a Audi manual. I've done it in these temps to about 190 and it did the trick. No harm in under filling a bit and adding until the thermometer reads an acceptable low temp. I have all the tools/pumps and a customer of mine let me use his evac tank. I diy most jobs aside from occasionally turning to the dealer to diagnose for me. If I knew the oz capacity of this car it would help.
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      02-22-2017, 12:32 AM   #4
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Actually I found a chart that said 650 grams. Can anyone confirm. Seems Kinda low for this car. But I suppose it's a good start point.
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      02-22-2017, 12:55 AM   #5
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Quote:
Originally Posted by uisim View Post
Actually I found a chart that said 650 grams. Can anyone confirm. Seems Kinda low for this car. But I suppose it's a good start point.
it's listed under the hood. IIRC it's 1.3 pounds. I think it also has it listed in grams. But would be around 590 grams based on 1.3 lbs.
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      02-22-2017, 01:31 AM   #6
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Originally Posted by askjeeves View Post
it's listed under the hood. IIRC it's 1.3 pounds. I think it also has it listed in grams. But would be around 590 grams based on 1.3 lbs.
Sweet. My sticker was not legible thanks that's what I was looking for
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