Question about 1992 Oldsmobile 88 Royale

1 Answer

Where is the low pressure port on air conditioner

Posted by Anonymous on

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1 Answer

You can not get R12 Refrigerant for a 1992

That was the last year for that ,then we went
to R134a

Can't use that in yours

The Low Side Port is plain site

Leave A/C work to the pros ,with the
knowledge & proper equipment

Posted on Aug 31, 2014

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Posted on Jan 02, 2017

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Greg McCarthy

  • 1340 Answers

SOURCE: where is the low pressure port on the air

You add the freon into the aluminum line with the black cap on it closest to the belt system.That is where the evaporator and compressor are.Remove the cap.If you try the wrong side it will not hurt the system,it just will not accept the freon.With the engine running and the a/c on,add the freon at one quarter can intervals and check the a/c.When it is cold enough stop.Overpressurizing the system can cause damage $$$.Good luck! Greg

Posted on Aug 09, 2010

redds55

Ricky Peters

  • 2620 Answers

SOURCE: cant find low side port

Follow the larger of the to lines its the low pressure side and you should find it.If not check drier or accumulator tank some have service valve on them.

Posted on May 22, 2011

ray hobson

  • 104 Answers

SOURCE: Where is the low pressure port for air conditioner

It's below the air cleaner if you move the air box you should see it

Posted on May 23, 2011

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1 Answer

Where is the port to charge my air conditioner


There are 2 ports, a high pressure and low pressure port. Both are in the engine compartment. I would suggest you get someone who knows air conditioners to do the work. This can be dangerous since Freon is extremely cold and can cause burns (freezer burns). Also you can damage your air conditioning system, and then it will cost big bucks to repair.

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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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The low side port is on the side of the accumulator/dryer. The arrow is pointing to a hose connection, but to the right of that connection is the low side pressure port.
2005-08-27_144127_low_side_port.gif

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I'm not familiar with your car, but the high and low ports are usually on the pipes under the hood inside the passenger fender. They're stamped H or L. I have also seen them behind the grill near the a/c dryer.

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1 Answer

Can't find the fitting to recharge the air conditioner


  • The low-pressure service gauge port valve is located on the suction accumulator.
  • The high-pressure service gauge port valve is located on the LH top of the condenser core.

  • To access the low pressure port you have to remove the right front wheel and inner fender.

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