Question about 1994 Toyota Corolla

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I want to refill with freon my 94 Toyota Corolla but I can not find the low pressure port, I only see the High pressure port. Do you know where is the Low Pressure Port located so I can refill my car with freon the summer is coming and the weather ig getting hoter every day.

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First of all this car does not use Freon. It uses R-134a refrigerant.

Recharge through the a/c low side port, on the passenger side just in front of the firewall.

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Frank's Friendly Cars Maui Car Rental
www.MauiCarRental.biz

Posted on Aug 30, 2009

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Look on the Pass Side under the Hood on the Bigger of the two a/c lines.. Lemmie know

Posted on Mar 10, 2009

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What type of Freon do I use for my 94 corrolla?

Posted on Mar 23, 2009

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Posted on Jan 02, 2017

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1 Answer

How do I replace the freon in my Magic Chef Wine Cooler?Thanks


Freon is R-12 refrigerant. Regulated due to involvement in ozone depletion. Which means EPA licensing and you can't just buy it at Wal-Mart. If it's a recent model, it'll contain R-22 refrigerant. Look for a label that tells you what's in and capacity of system. You can buy R-22 refills at box stores but be sure the carrier oil is compatible. However a small cooler might not have been designed to be serviceable. Anyway look for two plastic screw caps for high or low side then use a pressure gauge for car AC from Wal-mart, compare two pressure
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Ac clutch engage disengage


You are probably low on Freon. Your symptoms are the way the A/C goes out after running out. A bigger problem is losing the lubricating oil in the A/C system as the compressor can seize if the safety pressure switches fail.

There are several fixes and approaches to each problem. You need to determine if Freon still exists in the unit. You can get by with adding Freon with an additive to fix leaks and lubricate the compressor. To add Freon you need to access the Low pressure port and jump the Low pressure safety switch for the initial can of Freon.

There are tool loaner programs at the big Autoparts stores which can allow for this process.

These same stores may have electric Vacuum pumps to purge your empty system for refill. If you do not have enough pressure left in your system, outside air can enter. If you are lucky and timely, a refill with Sealant Freon mix after purging the system can restore it.

Every car is a different case. As your car is 10 years old, it may have been leaking slowly for years, or in the last week. You never know until you try finding the leak. Some people just spring forward and trust the Sealant to work. Others use devices known as sniffers or leak detectors before trying to refill the system. Some leaks can be so small or in places with no visual access.

The cheapest way is to use the Sealant Freon after testing the pressure. Use gauges to determine system pressure.

Please comment on my info.

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1 Answer

Overfilled freon


To review - the system only holds 2 pounds max. Each can holds 12 oz.
You could be using the wrong fitting on the car. The low side would show something around 30 or 40 psi and the high side would be over 200 psi. One port is bigger than the other, but some cars have a fill port on the high side for factory use only. The low side is usually mounted on the bigger//fatter hose.
You can leave the can off the hose and slowly open the valve to release the gas. Keep in mind freon gas is about minus 40 degrees so don't let it touch you.

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1 Answer

My AC is not blowing cool air. Compressor clutch is not getting engaged. AC button is showing green light indicator though. I am suspecting clutch relay problem. where is air conditioning clutch relay in...


First of all check the freon pressure, if the pressure is low the compressor clutch will not turn on. The pressure should be between 30-40 PSI.

Aug 25, 2011 | 2004 Toyota Corolla

2 Answers

How to recharge recharge airconditioner


Hi, determine if your car uses R134 or R12 refrigerant. You will notice screw type connectors on the both the High Pressure Side and Low Pressure Side lines in models using R12 refrigerant. R134 compatible models have quick connect valves on both sides. Models made before 1995 may use the old R12 refrigerant. If this is the case, you must have your Chrysler's air conditioning system retrofitted to use R134 refrigerant. Mixing R12 and R134 refrigerants is dangerous and may cause damage to your vehicle. Check your air conditioning system pressure using an automotive air conditioning pressure gauge. Keep in mind that in order to get an accurate reading, the air conditioner has be turned on the coldest setting with maximum blowing power. Remove the Low Pressure Side port valve cap and set it aside. The location of the port varies, but it is usually in front of the engine block. Attach the refill hose to the port on the Low Pressure Side of the air conditioning system. The Low Pressure Side port is smaller the High Pressure Side port. Because the ports are different sizes, the refill kit hose should fit only on the Low Pressure Side port. Additionally, the High Pressure Side port will usually have a red cap or be marked with an H or the word High Allow the air conditioner to **** the refrigerant out of the can by slowly turning the valve on the refill kit hose. Pay attention to the way you hold the can. Most kits will have you hold the can upright when you recharge the air conditioning system. It may take as long as 10 minutes to empty a single can. Turn the valve to the off position and remove the refill hose from the port. Recap the port before closing the hood. Let the air conditioner stay on for at least 30 minutes. This allows the refrigerant to move throughout the entire system.
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2 Answers

Add freon


You have to locate the low pressure line and connector port. Trace the two lines back to the firewall that come from the compressor. You will find 1 port on each line. They are usually covered by a plastic cap of some type that unscrews. Your refill hose, assuming you have a standard refill can with attached gauge, will only attached to the low pressure side. The two ports are slightly different in size. The low pressure side should be the larger of the two lines you are tracing from the compressor.

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1 Answer

Where is the port to install a.c.gas


Well, on the left side of the engine compartment. It will be covered by a plastic cap usually light blue or black in color. The coupling on your refill kit will only fit the Low Pressure side, the high and low are different sizes.

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1 Answer

A/c cmpressor cloch, not working


Did you check the pressure of the freon? Mine was doing that. The pressure was fine but wouldnt start. It was the low limit switch on the low pressure side. Right above where you hook the freon up. Unplug it and cross the plug out with a jumper wire while its running and ac is on.
And see if it kicks on. If not then maybee fuse or relay? Or could be low pressure.

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