# R134A refrigerant

**URL:** <https://community.cartalk.com/t/r134a-refrigerant/2779>\
**Category:** Maintenance/Repairs\
**Created:** [August 7, 2007, 10:55pm UTC](https://community.cartalk.com/t/r134a-refrigerant/2779 "2007-08-07T22:55:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![michael\_williams](https://avatars.discourse-cdn.com/v4/letter/m/58f4c7/32.png) [@michael\_williams](https://community.cartalk.com/u/michael_williams)\
**Post date:** [August 7, 2007, 10:55pm UTC](https://community.cartalk.com/t/r134a-refrigerant/2779/1 "2007-08-07T22:55:00Z")

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please tell me where the low pressure filler cap is on an 2002 T-Bird so I may add R134A to my car.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [August 7, 2007, 11:12pm UTC](https://community.cartalk.com/t/r134a-refrigerant/2779/2 "2007-08-07T23:12:43Z")

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[b]I could tell you, but I won’t.

If you can’t locate the low pressure fitting for your AC system, reason tells me this is something you shouldn’t even attempt.

Tester[/b]

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**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\
**Post date:** [August 7, 2007, 11:18pm UTC](https://community.cartalk.com/t/r134a-refrigerant/2779/3 "2007-08-07T23:18:31Z")

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Agreed, if you can’t find the low pressure port.  
If the A/C is not engaging at all maybe it’s an electrical problem such as a fuse or relay.  
If the system legitimately needs refrigerant then ask yourself where it went.  
A leak is where.