Question about 2003 Toyota Corolla

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I want to put some freon into the AC but cannot locate the "low" valve. The RedTek guage will not fit onto the "high" valve.

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Follow the lines coming out of and into the compressor. The line leading from the firewall to the compressor is the low pressure line.
the line going from the compressor to the condenser located in front of the radiator is the high side.
Always charge with can in upright position through the low side line into the compressor.

Posted on Jun 05, 2009

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Find the a/c compressor and follow the larger line from it to the fire wall and you will find it between there.

Posted on Jun 05, 2009

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1 Answer

Why did the guage read 90 PSI as soon as I


when adding Freon the A/C must be running and you must add to the low side of the unit (do not hook to the high side DANGER)

May 07, 2014 | 1997 GMC Safari

2 Answers

Ac compressor cuts on off just had a new one put ,on is it because its low on refridgerant


It could be low on freon or it could be a bad low pressure switch located at or by the accumulator or
ac dryer, if you have a ready made gauge, it will have a gauge,hose and can of freon, it can be closed,
the can can be empty, you just want to make sure there is freon pressure at the low pressure switch. once confirmed and you know there is normal freon pressure, proceed by setting your ac to high,pull off the low pressure switch molex and connect a jumper wire across it, if the ac clutch stays engaged and
the car starts to cool, just replace the low pressure switch, you do not have to pull the freon out to replace just make sure the seal is lubricated with the correct pag oil. if you just had the compressor, replaced you could also have a freon leak. good luck!

Aug 04, 2011 | 1999 Mercury Cougar

2 Answers

When putting freon in my 01 saturn there is a high input valve and a low input valve, which one do i put the refrigerant in/


You put the freon on the low side, it may have a blue cap to let you know its the suction side.

its usually closer to a long round canister called the dryer or accumulator. when putting freon

make sure to run your ac on high while you are recharging the ac. good luck!

Jun 25, 2011 | Saturn L-Series Cars & Trucks

2 Answers

I have a 2006 Envoy, and it appears to freon is low. I purchased a can of freon from Auto Zone. Tried to put the nipple over the lower valve and it won't connect and snap in. I end up sending freon...


ok, there is a high side, high pressure line, and low side, low pressure line, for your AC. That refill can you purchased has an R134a connector. It will only connect to the low side of teh AC system as they are different sizes. If you try to connect it the best case scenario is what you described, the connector won't lock in place and it sprays every where. The worst case scenario is the can blows up. Make sure you have the can completely connected and the connector locks down or your on the wrong valve and may damage your system or injure yourself.

Jun 10, 2011 | GMC Envoy Cars & Trucks

1 Answer

Where is my lo intake valave for my a/c on my 98 dodge grand caravan


The low side fitting is on the passenger side of the car, near the compressor and the headlight area, close to the drive belt, about 12" away from the radiator. Locate the black screw dust a cap, looks similiar to a valve stem cap on your tire valves. The high side connector is located in the engine compartment, passenger side, near the fender well back towards the alternator and very close to the drive belt. The high side fitting is much harder to find than the low side, the low side is in the open. The fitting you have for adding R134a from the recharge kit will not fit on the high side. The high side fitting is smaller than the low side fitting. Thank goddness for that for if you were capable of putting the fron can onto the high pressure line, it would develope so much pressure from the high side, it would or could explode in your presence.
Please be aware that you need to wear protective eye and hand gear when working on an a/c system(freon can blind you if sprayed directly in your eyes and can cause frost bite when over exposure to your skin.
Happy Motoring!!

Jun 09, 2010 | 1998 Dodge Caravan

5 Answers

Where does the freon go for a 99 expedition


Hi .. I just ran into the same problem .. I have a 2000 Expedition with the 5.4L engine .. the low side port is located on the passenger side of engine compartment just below the black metal bracket that contains electrical connections right in front of the firewall... you have to reach under this and locate the low side (larger line) and feel for the connection .. it is right in front of the accumulator .. There are two heater hose that hide the port .. you have reach under these to unscrew the port cap which is black .. you'll have to do this by feel .. I have found that you can by R134A charge with dye and leak sealant helps with small leaks .. if the system takes more than two cans be usre to add refrig. oil .. hope this helps

Jul 19, 2009 | 1999 Ford Expedition

1 Answer

I bought a bottle of freon and a guage with an attachement that is supposed to fit onto the lower valve, but it does not fit. Why?


try the other fitting. it is not the lower fitting, but the low pressure line of your a/c that your looking for.

Jul 16, 2009 | 1994 Lexus Es 300

2 Answers

Recharge Auto air conditioner


I just did this for my 1994 Camry. Does your camry use the R-134A modern refrigerant? Probably.

Go to an auto parts store and buy a can of R-134A with a pressure guage included. You'll need that guage so you don't overfill the system. I bought one that allows me to save the guage and buy cheaper refills int he future.

There are two AC valves. A small one, located in the left-rear of the engine compartment, behind the strut tower, just in front of where the passenger seat is located. It might have a cap on it marked "L". This is the "Low" port, and is the one you want. The larger "H" port is up near the battery, is bigger, and is the "high" port. You don't want to use that one, and besides, it won't fit the can anyway.

Locate that low valve in the left-rear of the compartment. Take the cap off (if one is still on there). Start the engine and get it up to running temp. Turn on your AC to maximum cool, fan at maximum. Follow the directions on the can. It's pretty simple.

You'll pull back on the bushing on the refill line, and then snap it onto the valve just like you'd find on an air hose. Snap it into place, and then start refilling. Make sure the can is upside down and that you rotate and shake the can to get the coolant out effectively.

Jul 03, 2009 | 1996 Toyota Camry

2 Answers

How do I recharge the AC freon on my own?


You should have R12 freon in a 1990 but you can put R134 freon into that system the only problem your going to have is the adapter for R12 is different from R134 after you get the adapter you need to put the freon in the low pressure valve not the high pressure, you will know which one because the adapter only fits the low pressure valve which is located on your AC lines under your hood, theres a little cap thats either blue or black you unscrew. You can't buy r12 anymore because its not good for enviorment so buy R134. you can buy at any parts store for like $5 to $10.

May 28, 2009 | 1990 Honda Accord

3 Answers

93 cherokee a\c


ok ... i presume you have pressure tested it and there were no leaks in the system.
aside from a fuse there should be a relay for it as well. likely located in a fuse panel near the battery in the engine compartment.


Robert

Sep 21, 2008 | 1993 Jeep Cherokee Country

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