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Look towards the center of the engine to find the air conditioner's metal pipes. Generally speaking, the more accessible fitting is the Low-side. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Terms of Service - never heard of AC pulling codes even with evap going bad.. Here is what a typical auto a/c compressor looks like: If you are having trouble identifying your compressor, you might want to try visiting this page and entering your vehicle information to see a list of compatible compressors for your engine: http://www.autozone.com/cooling-heating-and-climate-control/a-c-compressor?filterByKeyWord=compressor&fromString=search&isIgnoreVehicle=false&newYmme=true. Now that you know where your low-side service port is located, you can begin recharging your systems refrigerant according to the instructions on the packaging. I go to France on holiday in a weeks time so I want to give it a slight top up using a recharge kit I already own before I go, to avoid a disappointing journey. It also saves time and money by using the correct tools. Check out Esquires engine pic in the Photos section and you can see the LP port. The system only has one circuit so loss of refrigerant would mean no cold air on either side My guess is that one of the flaps are not working! With as much complaining techs that work in AC shops do about recharging with r1234yf, and how long it takes a dedicated machine to do it, I am not sure how DIY it is, but yes, there are small cans of it and self charging hoses, not seen any one talking about how they work. The SA advised it would have been roughly $2300 job otherwise. Well, its usually located between the compressor and the evaporator on the larger diameter a/c line. Have you pulled codes? I may have to double check it. I can't think of what else it could be? Thanks mazdadude. Anyone know the location of the port? JavaScript is disabled. Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications. is the one with blue circle with black cap on? Mixing the two will cause damage; R12 should never be added to a R134a system. Open and prop the hood over the automobile's engine compartment. Thanks for you reply. Vehicle air conditioners use either R12 or R134a Freon, depending on their year of manufacture. Your LP port is directly under the driver side cabin filter. Archive - I see one with "H" easily. Very frustrating. After which I will get it done at dealers when it really needs it. https://s32.postimg.org/lfb98p5xx/20160725_231036.jpg, http://acprocold.com/blog/car-tipstricks/find-low-pressure-ac-port-car/. Also, the port caps usually will have an "L" or an "H" on them. for those who pressure test ; ). To make things easier, this is the only port to which the Avalanche quick coupler will connect. i didn't have this problem with other cars. i went fill up the 143a into that black port, and now i have cold air coming out!!! You have the right one. Where is the low pressure port of the air conditioning located? Topping off the charge level with a proper evac and recharge will fix it short term, but once enough refrigerant is lost as a result of the leak the performance will diminish. I didn't see no "L" on the cap. Thanks, that's the thing. thanks. The low side service port is the only port to which the AC Avalanche coupler will connect. It may not display this or other websites correctly. While the low-side port is intended for recharging Freon, the high-side port is used for maintaining an air conditioner's internal pressure. The passengers side can be cold/cool and the the drivers side warm due to the design of the evaporator. Noted. On some vehicles, the service port is directly on the compressor. I think the poster may be in Europe/UK? To summarize: Copyright Avalanche, a division of Blaster Holdings, Three Common Problems with Car AC Systems. Can anyone point out the location of the low pressure port that allows the air conditioning to be topped up? By the way never buy the freon with the stop leak in it. I just took a photo of my car. The low-side port, like the name suggests, is lower on the pipes towards the front of the engine. Quote:Low side should be between evaporator and compressor, and high side should be between condenser and evaporator if you can follow either one. ^i am assuming the smell of cow manure for the leak is when you turn ac on, correct? I'll provide an update. The refrigerant evaporates as a result of low pressure due to an inadequate charge and the heat dissipation is complete at that time, resulting in a loss of cooling ability. Richard Ristow has written for journals, newspapers and websites since 2002. There is a H port and an L port. Never charge through the high side port. Location of 2012 Mazda5 OEM Alarm module? The low side line of the system will have a larger diameter metal pipe than the high-side. They did a nitrogen pressure test, after 20 mins they saw a pressure drop then traced the leak to the evaporator. My CPO warranty covered all the costs, aside from a $50 deductible. The first step in recharging your system is to locate the low side service port (or low-pressure port). It can be found inside a vehicle's engine compartment on the air conditioner's metal pipes. The stuff they sell in the parts stores with only a low pressure gauge on will not tell you anything. not when you turn off the ac. The low-side port will be on one of the air conditioner's pipes and it often uses a black or blue dust cap. This does not sound like a refrigerant issue though. That will help you when feeling for it. The best way to check your AC is to hook up a set of gauges to your high and low side port and watch what the pressures are. For a better experience, please enable JavaScript in your browser before proceeding. As an Amazon Associate, Mazdas247 earns from qualifying purchases. I have seen numerous times where it plugged up the orifice tube. The port is intended for recharging the Freon levels within the air conditioning system. If the passenger side blows cold your evaporator is not leaking! Find a shop/dealer that is good at the job, don't go for the cheapest route. I just had my AC issues resolved. Thanks for your help. AC is now working better than ever, comes on ice cold very quickly and I have to bump it up to 75 to keep it from freezing me out. A low-side service port is part of an automobile's air conditioning system. What type of refrigerant does my car need? Cookie Policy - Do Not Sell My Personal Information -, By logging into your account, you agree to our. i can't find a cap with "L" on it any where. The low side service port is usually in this line and will have a black or blue plastic cap that needs to be removed. This is one area it pays to have a technician that is good at AC to diagnose your car. '865kt. Privacy Statement - Anyone delete DRL relay on the 2022 Turbo Signature? Is it something that can be done by owners on the Mk II? could this be a quid pro quo to get extra pressure on N. Korea? Next, follow the line from the compressor towards the evaporator. But here is a link to another site that shows you how to determine thanks mazdadude. not sure if the flaps your talking about is the vents or somewhere inside and if it is i have no clue where it it. Every A/C System has two service ports: A high side and a low side. A forum community dedicated to Ford Escape owners and enthusiasts. The refrigerant enters the evaporator on the passengers side and exits on the drivers side. This is a major disassembly task that needs to be done properly! The evaporator is located near the firewall behind the dash, and directly under the windshield. Glad it worked out for you im SOL will be doing this myself. I took it in to the dealer and they found the freon to be 14oz low. But it seems you have it figured out. He is a winner of the Science Fiction Poetry Association's Rhysling Award and he edits poetry for Belfire Press. only cap which i can think of from the picture is the one i circled with red. I can't believe 2012 model made it so difficult to identify what i am looking for. For a better experience, please enable JavaScript in your browser before proceeding. Definitely a happy camper with the florida summer coming! correct equipment will pull codes on your HVAC system, ie servo motor, sensor faults ect. hmmm now im confused on where to look at the flaps.. all the vents are blowing air assuming flaps are working? He also holds a Master of Fine Arts from the University of North Carolina at Wilmington and has managed an automotive department at WalMart. Driver's side may be different, The following errors occurred with your submission, Discussion forum for the Audi Q7 MKII built from 2016 -, A/C Recharge Regas low pressure port location, The New Marketplace (All new FS items go in here), Vehicles For Sale - Archive (NO NEW POSTS HERE), Parts For Sale - Archive (NO NEW POSTS HERE), Want To Buy - Archive (NO NEW POSTS HERE). I hadn't really noticed the issue until it started getting warmer out. You are using an out of date browser. Vehicles must use only one type of Freon. The Environmental Protection agency has phased out R12, and vehicles manufactured 1984 and later are required to use R134a. The low side service port will have a black or blue plastic cap that needs to be removed. Well the low pressure port is always located on the larger diameter line tubing and usually will have a black or blue cap. These pipes will connect a compressor to a drier and evaporator. now im sure my evap is probably leaking but before i try that im just going to charge it to see if it will hold up but i dont know where the low pressure recharge point. Advertising - Both ports are located on the air conditioner's metal pipes. What Type of Transmission Fluid Does a How to Find the Value of a Used Utility car heater vent image by robert mobley from, Copyright 2022 Leaf Group Ltd. / Leaf Group Media, US EPA: Recharging Your Car's Air Conditioner with Refrigerant, "Popular Mechanics Complete Car Care Manual" The Editors of Popular Mechanics; Hearst Publishing; 2008. Everything went back together perfectly, no rattles or anything. I've been using it a coupla years without recharge, so there' s a good chance it will fail soon. His work has appeared in "2009 Nebula Showcase" and elsewhere. Contact Us - You can reach it without removing anything. When recharging with AC Avalanche refrigerant, for safety, you will charge through the low side service port. JavaScript is disabled. Every auto air conditioning system has two service ports: one on the high pressure and one on the low pressure side. Driver side was much warmer than the passenger side, and on hotter days it would just blow warm air on both sides. It is driven by the fan belt near the radiator at the front of the vehicle. Or sniffed it out. The low side service port is usually located between the AC compressor and evaporator. First, find the compressor. could anyone confirm that's the low pressure port? The Fora platform includes forum software by XenForo, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Where is the low pressure AC port an 95.5 S6? With two technicians they pulled the dash, swapped it out, and had the car ready for me in just 6 hours.