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Old 07-27-2018, 07:35 PM   #1
Mysaturnbeater
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Default Recharge my ac

I have a 1998 Saturn SC 1.
I'm looking to recharge my AC. Its not quite cold enough.

Does anyone know the high and low pressure and how many pounds does it use?
R134a Freon.

Thank you

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Old 07-27-2018, 08:50 PM   #2
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2003 L-Series 3.0L Sedan
Default Re: Recharge my ac

1.5 lbs or 24 ozs. Before throwing away money to refill..............a leaking system, buy and use an inexpensive uv blacklight (good for any vehicle already having dye in it) to find the source of the leak. All Saturns (and most likely every GM vehicle with r134a systems) have dye already installed at factory assembly to make it easier to find 98% of all vehicle ac problems, the leak no one wants to find and fix but will reach for the refill kits. Sealer will guarantee a more expensive repair.

To prove how stubborn diyers are; http://www.saturnfans.com/forums/sho...10#post2278610

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Old 07-28-2018, 12:29 AM   #3
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Default Re: Recharge my ac

I had it recharged about 2 yrs ago. And I do have a set of UV lights.
Thanks

What about the high and low pressure?


Quote:
Originally Posted by fdryer View Post
1.5 lbs or 24 ozs. Before throwing away money to refill..............a leaking system, buy and use an inexpensive uv blacklight (good for any vehicle already having dye in it) to find the source of the leak. All Saturns (and most likely every GM vehicle with r134a systems) have dye already installed at factory assembly to make it easier to find 98% of all vehicle ac problems, the leak no one wants to find and fix but will reach for the refill kits. Sealer will guarantee a more expensive repair.

To prove how stubborn diyers are; http://www.saturnfans.com/forums/sho...10#post2278610

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Old 07-28-2018, 05:24 AM   #4
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Default Re: Recharge my ac

Run the engine up to 2k rpm when measuring pressures.
Attached Files
File Type: pdf Service Information(2).pdf (41.2 KB, 13 views)

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Old 07-28-2018, 05:44 AM   #5
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Default Re: Recharge my ac

I plan on buying some dye so that way I can find where the potential leak is coming from first before deciding to recharge the AC system again.

I'll report back

Quote:
Originally Posted by fdryer View Post
1.5 lbs or 24 ozs. Before throwing away money to refill..............a leaking system, buy and use an inexpensive uv blacklight (good for any vehicle already having dye in it) to find the source of the leak. All Saturns (and most likely every GM vehicle with r134a systems) have dye already installed at factory assembly to make it easier to find 98% of all vehicle ac problems, the leak no one wants to find and fix but will reach for the refill kits. Sealer will guarantee a more expensive repair.

To prove how stubborn diyers are; http://www.saturnfans.com/forums/sho...10#post2278610

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Old 07-28-2018, 06:22 AM   #6
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Default Re: Recharge my ac

Read my first reply again. Dye is in your system and doesn't have a freshness date. There's no need to add dye.

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Old 07-28-2018, 06:27 AM   #7
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Default Re: Recharge my ac

Sorry. I should of been more clear.
I had my AC recharged about 2 to 3 yrs ago from a shop. When I had it recharged, does the shop that recharged my AC system already have dye added from their machine?
Just wanted to be clear.
I'll go ahead and check it with a UV light. Thanks


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Originally Posted by fdryer View Post
Read my first reply again. Dye is in your system and doesn't have a freshness date. There's no need to add dye.

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Old 07-28-2018, 10:44 AM   #8
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Default Re: Recharge my ac

I'm not a business owner and do not know what repair shops do or not do but my guess is if you didn't ask for dye, they didn't add any. Dye is inexpensive but can be messy for anyone to add into a system. Again, dye is already in your system and does not degrade. It's mixed in with oil and circulates permanently. When refrigerant, oil and dye are released, refrigerant is invisible but oil and dye are not, leaving markers for almost anyone to find. A uv light makes it easier to find leaks.

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Old 08-09-2018, 03:42 PM   #9
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Default Re: Recharge my ac

remove all freon, evacuate the system and install the amount of freon stated on the radiator support, each can of freon is 12 oz,I forgot how much mine held,it was like 2.5 cans

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Old 08-09-2018, 05:46 PM   #10
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Default Re: Recharge my ac

I don't know if your r12 converted system to r134a uses the same amount but all S-series ac systems havingr134a from the factory have 1.5 lbs or 24 ozs as the amount. Two 12 oz cans.

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Old 08-12-2018, 01:29 PM   #11
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Default Re: Recharge my ac

Thanks


Quote:
Originally Posted by fdryer View Post
I don't know if your r12 converted system to r134a uses the same amount but all S-series ac systems havingr134a from the factory have 1.5 lbs or 24 ozs as the amount. Two 12 oz cans.

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