# AC low pressure port doesnt fit freon hose **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, impala\ **Created:** [June 7, 2020, 9:39pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460 "2020-06-07T21:39:29Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![Midgethick\_168025](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Midgethick\_168025](https://community.cartalk.com/u/Midgethick_168025)\ **Post date:** [June 7, 2020, 9:39pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/1 "2020-06-07T21:39:29Z")
I know I’m using the right port. I am not using the high pressure port. And I can not for the life of me fit the hose onto the low pressure port to charge my ac. I pressed the cap down and tried to fit it on the low pressure, I’m doing everything right, and I cant figure out why it wont fit. If I press it down while holding down the lever on the hose I will hear pressure escaping from the port but it wont attach. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 7, 2020, 9:42pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/2 "2020-06-07T21:42:21Z")
So what is your question? I’d make a wild guess that your fitting is incorrect or stripped but I can’t see it from here. ---
**Author:** ![Midgethick\_168025](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Midgethick\_168025](https://community.cartalk.com/u/Midgethick_168025)\ **Post date:** [June 7, 2020, 9:43pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/3 "2020-06-07T21:43:13Z")
My question is how do I get the hose connected if it wont fit. I need to recharge the AC but it wont fit. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 7, 2020, 9:47pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/4 "2020-06-07T21:47:29Z")
Read my reply… > [@Mustangman](#): > > your fitting is incorrect or stripped but I can’t see it from here. ---
**Author:** ![Midgethick\_168025](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Midgethick\_168025](https://community.cartalk.com/u/Midgethick_168025)\ **Post date:** [June 7, 2020, 9:49pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/5 "2020-06-07T21:49:18Z")
> **[15915664820098202932113071308014](https://ibb.co/cTrP8HQ)** > > Image 15915664820098202932113071308014 hosted in ImgBB I know its the right fitting. Idk how to tell if its stripped. I dont see how something like this could strip. ---
**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:** [June 7, 2020, 9:55pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/6 "2020-06-07T21:55:53Z")
Show an image of the hose you’re trying to connect. Tester ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [June 7, 2020, 10:07pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/7 "2020-06-07T22:07:02Z")
Pull back on the outer ring while pushing the coupling on to the fitting. I don’t think it is possible to strip a coupling. ---
**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\ **Post date:** [June 7, 2020, 10:38pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/8 "2020-06-07T22:38:32Z")
What year is this Impala? ---
**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:** [June 7, 2020, 10:41pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/9 "2020-06-07T22:41:56Z")
It doesn’t matter what year it is. That’s a R134a refrigerant fitting. Tester ---
**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\ **Post date:** [June 7, 2020, 10:46pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/10 "2020-06-07T22:46:36Z")
Right. I didn’t open the picture. ---
**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\ **Post date:** [June 8, 2020, 3:09pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/11 "2020-06-08T15:09:33Z")
I’ve seen some charging can hoses and even some cheap A/C gauge sets that would not fit 134 fittings no matter what. If it won’t fit then it has to be a matter of poor construction of the hose fitting or you are not holding your mouth right. It’s not stripped. Pressure escaping from the port on the car or pressure escaping from the can of refrigerant? You do know this kind of thing comes with the potential for serious injury; right? No goggles could leave you blind if things go wrong quickly. ---
**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\ **Post date:** [June 8, 2020, 8:57pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/12 "2020-06-08T20:57:05Z")
Turn the button at the top of the fitting counterclockwise a few turns and then attempt to push in that button and attach it. ---
**Author:** ![rower155\_170040](https://avatars.discourse-cdn.com/v4/letter/r/fbc32d/32.png) [@rower155\_170040](https://community.cartalk.com/u/rower155_170040)\ **Post date:** [August 17, 2020, 1:27am UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/13 "2020-08-17T01:27:25Z")
I had same problem. I had the low pressure port and followed all of the steps, but could not quite get the hose coupler to latch on no matter how much I fiddled with it. Not all couplers are created equal apparently. Mine was a cheap one I had for a couple of years. I bought a new one with a quick connect and it snapped on instantly. [https://www.autozone.com/a-c-charging-and-refrigerant/r134a-refrigerant/a-c-pro-acp-100ca-r134a-premium-refrigerant-with-hose-and-gauge-20oz/974768\_0\_0](https://www.autozone.com/a-c-charging-and-refrigerant/r134a-refrigerant/a-c-pro-acp-100ca-r134a-premium-refrigerant-with-hose-and-gauge-20oz/974768_0_0) ---
**Author:** ![alrot066\_175733](https://avatars.discourse-cdn.com/v4/letter/a/e19adc/32.png) [@alrot066\_175733](https://community.cartalk.com/u/alrot066_175733)\ **Post date:** [June 13, 2021, 3:31am UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/14 "2021-06-13T03:31:13Z")
I’d make a wild guess and say there’s no such thing as a stripped fitting. ---
**Author:** ![alrot066\_175733](https://avatars.discourse-cdn.com/v4/letter/a/e19adc/32.png) [@alrot066\_175733](https://community.cartalk.com/u/alrot066_175733)\ **Post date:** [June 13, 2021, 3:32am UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/15 "2021-06-13T03:32:01Z")
Exactly. Buy a new hose. ---
**Author:** ![leewilli01\_181154](https://avatars.discourse-cdn.com/v4/letter/l/f19dbf/32.png) [@leewilli01\_181154](https://community.cartalk.com/u/leewilli01_181154)\ **Post date:** [June 14, 2022, 9:58pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/16 "2022-06-14T21:58:24Z")
If using a blue lowside connector hose set with a quick disconnect blue knob turn it to closed position so probe inside recedes that compresses the schrader valve. Then turn to open position to release gas back to low side gauge. You can turn the blue knob on the connector to close / open and watch the probe inside recede - screw back and forth. Also check for burrs on male service port fitting, lubricate fitting. Pull snap lock ring back and depress the ball bearings inside with small screwdriver, toothpick, to make sure they are not stuck. These quick fittings have the adjustable closed/open knob to allow working with various type schrader valves. ---
**Author:** ![esoyke](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/esoyke/32/45616_2.png) [@esoyke](https://community.cartalk.com/u/esoyke)\ **Post date:** [September 27, 2025, 3:37pm UTC](https://community.cartalk.com/t/ac-low-pressure-port-doesnt-fit-freon-hose/165460/17 "2025-09-27T15:37:32Z")
You probably ran into the problem I did- trying to use a R-134 charging hose on a car that uses R-1234. It’s not an issue of having a cheap hose, the fitting is different. I didn’t even know about R-1234 until I had to buy a new charger today. Naturally it is more expensive than R-134.