# Where to charge air conditioning

**URL:** <https://community.cartalk.com/t/where-to-charge-air-conditioning/34292>\
**Category:** Maintenance/Repairs\
**Tags:** escort, ford\
**Created:** [July 31, 2009, 4:47pm UTC](https://community.cartalk.com/t/where-to-charge-air-conditioning/34292 "2009-07-31T16:47:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mufflerbearing](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@mufflerbearing](https://community.cartalk.com/u/mufflerbearing)\
**Post date:** [July 31, 2009, 4:47pm UTC](https://community.cartalk.com/t/where-to-charge-air-conditioning/34292/1 "2009-07-31T16:47:01Z")

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what port do i charge the air conditioning from this is the escort sport zx2 model

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [July 31, 2009, 5:21pm UTC](https://community.cartalk.com/t/where-to-charge-air-conditioning/34292/2 "2009-07-31T17:21:27Z")

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I suggest having the pro at an A/C shop do it. Frankly if you have to ask, you should not try it. It is possible to be injured if you don’t fully understand the instructions.

In addition since a properly functioning A/C does not use the stuff so it means you do have at least a very small leak.

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**Author:** ![mufflerbearing](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@mufflerbearing](https://community.cartalk.com/u/mufflerbearing)\
**Post date:** [July 31, 2009, 5:42pm UTC](https://community.cartalk.com/t/where-to-charge-air-conditioning/34292/3 "2009-07-31T17:42:17Z")

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Well frankly, I’ve done it before on my blazer and some other cars I’ve had in the past. The reason Im asking is so I dont make a mistake. In this economy I cant afford to take it to the shop! I am a good mechanic thats why I ask questions.

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**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\
**Post date:** [July 31, 2009, 6:47pm UTC](https://community.cartalk.com/t/where-to-charge-air-conditioning/34292/4 "2009-07-31T18:47:29Z")

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If you are a good mechanic, then you should know that the A/C charging is ALWAYS done at the low side pressure port with the engine running and the A/C on high. Also, on R-134a cars, the high side port is much larger than the low side port. These are the basics. Maybe a good shop manual is in order?

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**Author:** ![mufflerbearing](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@mufflerbearing](https://community.cartalk.com/u/mufflerbearing)\
**Post date:** [July 31, 2009, 7:03pm UTC](https://community.cartalk.com/t/where-to-charge-air-conditioning/34292/5 "2009-07-31T19:03:29Z")

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Thanks for your advice! I know the basics of charging a air conditoner. I just wanted to make sure I wasn’t missing anything like a hidden port that I couldent see. Instead of buying a manual I thought I would try the experts a car talk forum. Thanks