Question about 2001 Chevrolet Malibu

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I can only find the high pressure port I can not find the low pressure filling port

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The high side port is on the passenger side above the fan. The low side is on the passenger side towards the rear of the engine compartment.Good luck

Posted on Jul 15, 2009

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Posted on Jan 02, 2017

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How and where to add freon to a1995 sedan deville


Verify ambient temperature is above 65 degrees F.

1. Safety> - safety glasses, long sleeves and gloves, (exposure to refrigerant can cause frostbite).

2. Attach hoses to manifold> assembly, (hi, lo, and fill).

3. Remove caps from service ports, (Low press. Larger tube from evaporator to accumulator - passenger side over fender well; High Pressure - smaller tube from evaporator along firewall towards driver's side). Verify service> ports are clean.

4. Attach low press. and high press hoses to proper service ports.

5. Start car>, reset low refrig code, and turn ac on high and fan on high.

6. Read gauges and compare with chart provided with gauge set.

7. If low and high press readings are both low, then system needs recharge.

8. To recharge, attach fill hose to can of R134a and slowly open low press valve>, (NOT HIGH PRESS VALVE), until low press side reads 40 psi.

9. When flow stops and pressures stabilize close valves> and disconnect manifold from service ports and refrigerant can. Replace service port caps.

Aug 19, 2015 | 1995 Cadillac DeVille

2 Answers

Where is the low pressure port ?


That port would be located at the rear of the passenger side fender well under the hood. It's kind of against the firewall. Be carefull of moving parts as the front of the engine is right there. Good luck

Jul 10, 2014 | 2002 Ford Taurus

1 Answer

Where is the location of the low pressure port to recharge air conditioning system? There are two ports located on passenger side about 2 inches apart on chrome pipes.


There is two filling ports for A/C - high pressure is biggest diameter-low pressure smallest one.All of them must have black cups.Because I don.t know exactly the model of your VW I can.t dive you proper instruction.If any problem come back with full details for the vehicle.

Jun 13, 2011 | Volkswagen Jetta Cars & Trucks

1 Answer

Where do I charge r134 coolant? the adapter on can fits the high pressure valve and the low pressure valve is too big? please help..


can't be.the larger port is the HP side, and the hose on your can will only fit the low (small) pressure side-you CAN fill a system on the HP side, engine off, by hooking up to the HP side and inverting the can so that liquid 134a fills the high side-but it is not recommended if you do not have manifold gauges and aren't experienced with AC systems.

May 31, 2011 | 1998 Toyota Corolla

1 Answer

Need to fill air where is low pressure intake


The a/c has a low pressure port on the low pressure side of the a/c piping system.

One can identify the low side by looking at the 'thicker' pipes vs. the 'thinner' pipes on the high pressure side.

There may be a canister that has a low pressure port on it on the passenger side. Or else, it's on the thicker piping itself.

There may be a blue or black cap on the port.

The pressure should read 35psi to 45 psi on the low side when the a/c clutch is spinning or engaged.

When the a/c clutch is not spinning or engaged then the pressure should read 75 psi to 100 psi on a hot day.

Aug 06, 2010 | 1997 Pontiac Grand Am

2 Answers

Where do i add r134 on the 99 buick regal , I see to nozzles under the hood one to the right boy wheel shock and the other back center closr to firewall


Closer to firewall is where your low side port should be. Your R134 filling hose quick connect adapter will ONLY fit on the proper "low side" connector port at that location because it is a different size than the high pressure port. You can't put it on the wrong port and get it to fit.

Jul 25, 2010 | 1999 Buick Regal

2 Answers

Low side on ranger for the port on the ac


hmm ..if you are looking for the low side air conditioner port .. then locate the condenser (thats in front of and looks like the radiator) .. you will notice two tubes going to that ..one is large the other small .. the small tube is the high pressure side .. the large tube is the low pressure side ... follow the large tube back until you find a cap that covers the low pressure port .. thats where you would fill with new refregerant (r134a) .. if you buy r134a, you can also get a filler hose and gage.. that hose will only hook up to the low pressure port ..it wont fit the high pressure port ...

Jul 03, 2010 | 1994 Ford Ranger Supercab

1 Answer

How do I fix a Air condition blow out hot air?


Go to your local auto parts purchase a a/c charge kit for about $69.00, find the low pressure(suction) fill port, there are two ports in every a/c system one is a low pressure side used primarily to fill a system with freon 123a or the like and it is the larger valve mounted on the line, then there is the dangerous high side valve, this is a smaller diameter valve mounted to a smaller diamet a/c line, this is under extreme pressure so donot attempt to fill this high side with freon as it can backfire on you and cause injury.
The low side fill kit will not fit on the high side port so thank godness for that.
start the vehicle put the a/c on full cold high blow fan speed, start filling the low side with a can of 123a freon+oil additive, which equals one pound of freon and check the inside a/c vents, getting cold? If its perfect then you are done, the system may have a very small slow leak and if it only takes a one pound can to fill it once or twice a year you are ok, if it takes more you may want to add a second pound can of freon 134a containing a dye additive that will work its way into the system and show you where the leaks are by exposing a color once it hits the air coming out of the systems defective seals etc.,also they sell a sealer + freon one pound can that can be used to try to fix the leak without having to get too expensive on the repairs.
A car's air conditioning system only hold like 2 3/4 pounds of freon, so in the event you happen to over fill the system a high pressure blow valve usually mounted on the a/c compressor will purge off the excess, but let me warn you they blow off without any warning and can startle you. Always think safety first, wear protective equipment. Work Smart, Work Safe.
Happy Motoring!!!

May 20, 2010 | 2002 Ford Escort

2 Answers

Where do you add refrigerant to a 97 sho?


The high pressure port is in front of radiator fill reservoir. The low pressure port is located by the passenger strut tower.

Jun 24, 2009 | 1997 Ford Taurus

1 Answer

I need to find the service port for the a/c system on a 1999 Ford Expedition. The one up front and high will not allow the service quick-disconnect hose to connect.


do not try to fill through the high pressure port.

The low pressure port is on the side of the accumulator/drier. Please rate as solved if this is what you need.

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May 10, 2009 | 1999 Ford Expedition

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