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Old 06-04-2007, 08:33 PM   #1
1993_SL2driver
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Default A/C Refrigerant

Would the A/C system in a 1993 SL2 need to be retrofitted to R134 or is it already. My car has good refrigerant pressure, it just doesn't get cold enough to keep you comfortable. Any help would be appreciated.

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Old 06-04-2007, 08:49 PM   #2
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Default Re: A/C Refrigerant

check the label that is on the radiator support from the factory. it will tell you what it came with originally.


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Old 06-07-2007, 05:04 PM   #3
1994Saturn
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Happy Re: A/C Refrigerant

Quote:
Originally Posted by 1993_SL2driver View Post
Would the A/C system in a 1993 SL2 need to be retrofitted to R134 or is it already. My car has good refrigerant pressure, it just doesn't get cold enough to keep you comfortable. Any help would be appreciated.

Thanx
I think you have R12? in late 93 or 94 they went to R14a?

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Old 06-07-2007, 06:36 PM   #4
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Default Re: A/C Refrigerant

If the underhood area is missing the label indicating what refrigerant system is used you can remove the valve caps to identify the system; R12 uses externally threaded service fittings while R134a uses quick couplers and are not externally threaded. In other words, R12 requires a hose fitting that screws on over the service fittings while R134a requires a type of hose fitting that quickly connects with a snap-on like coupler similar to air tools that uses quick connect fittings. Both fittings uses the same schrader valve that screws on/off internally just like the tire valves.

R12 - screw on fitting

R134a - quick coupler fitting

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Old 06-07-2007, 06:58 PM   #5
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Default Re: A/C Refrigerant

Quote:
Originally Posted by fdryer View Post
If the underhood area is missing the label indicating what refrigerant system is used you can remove the valve caps to identify the system; R12 uses externally threaded service fittings while R134a uses quick couplers and are not externally threaded. In other words, R12 requires a hose fitting that screws on over the service fittings while R134a requires a type of hose fitting that quickly connects with a snap-on like coupler similar to air tools that uses quick connect fittings. Both fittings uses the same schrader valve that screws on/off internally just like the tire valves.

R12 - screw on fitting

R134a - quick coupler fitting

Good quick tip!

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