Question about 2003 Pontiac Grand Am

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Cannot find the fitting to recharge the air conditioner

Hi, We cannot find the low pressure fitting to recharge the air conditioner. The car is a 2003 Grand AM wit a 3400 engine.
It's hot here in Orlando. Thanks so much for your help.

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It has a blue cap and is behind the engine near the firewall, it is on a silver pipe.

Posted on Aug 15, 2009

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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.
Take care

Aug 03, 2010 | 2006 Chrysler Town & Country

1 Answer

Were is the fitting to recharge air conditioner


it is on low pressure line the easy way is to find the low pressure line going to the evapater coil in dash from the compresser the other high presser line will be going to the condenser in front of the radiator.hope this helps

Jul 11, 2010 | 2000 Ford Focus

1 Answer

Need to recharge 2003 chevy malibu air conditioner. where do i find the intake to recharge it.


under the hood there is two a/c valves, one says H for high side and one says L for low side... hook up to the low side and turn the a/c on max with the car running and then charge. you really need a pressure gauge to know how much to put in. too much freon will make it blow hot also, you need the right amount of pressures, just go slow filling it up and keep checking the a.c temp out of the vents.

Jul 11, 2010 | 2003 Chevrolet Malibu

1 Answer

I cannot locate the low end valve on my ford focus 2003 zx3 for the air conditioner. there is one valve in front of the radiator but the connection valve does not fit. Is that the high end valve or do I...


the low pressure valve is the longer skinnier one. The low pressure valve should be on the fatter of the hoses in the engine compatrtment. Try close to the compressor. if you stil cannot locate it i can check my service manuals or the exact location.

Aug 29, 2009 | 2003 Ford Focus

2 Answers

My recharging kit for air conditioner doesn't seem to fit recharge valve on 2004 dodge durango. How can I be sure i am looking at the low prerssure valve?


Newer vehicle come with R134 vs R12. Since the two are not compatible, R134 has larger fittings. AC system has two ports, High and Low. Low is return to AC Compressor and high is output. High port is first following line from compressor to condenser (condenser is at front of vehicle like a second radiator). Keep following line till you find high port (paint cap red). Second port is low (paint cap blue).

Jul 11, 2009 | 2004 Dodge Durango

1 Answer

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the rear fitting is the low pressure side where you charge the system

May 29, 2009 | 2002 Mercury Sable

1 Answer

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It will be the thicker line with a small fitting located on the line itself.

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1 Answer

2003 Pontiac Sunfire sending unit


Check the pressure in the low side A/C line. My guess is the refrigerant is low and needs recharging.

Apr 25, 2009 | 2003 Pontiac Sunfire

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.

    Apr 05, 2009 | 2001 Ford Focus

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