Question about 2003 Pontiac Grand Am

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Im trying to charge my a/c now i have the can to recharge it, i just dont know where the low side port is, i just is it the blue cap behind the engine or the black cap in front of the engine

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Your hose will only fit the low side, the high side is much larger and it will not physically fit, you cannot do it wrong.

Posted on May 24, 2011

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1 Answer

Which port is the a/c recharge port?


Those two ports are not the same. One is a high pressure side and one is a low pressure side. If I were facing this problem, I would go somewhere like a auto parts store and read the instructions on a gauge kit,. The kit has instructions telling you which side to recharge. That gauge also will test your system and tell you if you really do need to recharge it or not.
Be blessed.

May 22, 2013 | 2005 Chevrolet Aveo

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Trying to recharge a/c unit with freonand can't find the charge recepticle


high side port just beside radiator on passenger side and low side port is located on the accumulator right next to clutch cycling switch

Jul 24, 2010 | 2001 Ford Expedition

1 Answer

Need air cindition recharge, don't have cash to take it someplace, can you help with instructions to do this


YOU NEED A R-134 GAUGE SET TO CHECK LOW PRESSURE SIDE AND HIGH PRESSURE SIDE.YOU ALSO CAN BUY A LITTLE CHEAPER GAUGE TO CHECK YOUR AC LOW BLUE SIDE AND HIGH RED SIDE AT ANY AUTO ZONE OR ADVANCE AUTO PARTS.WHAT YOU DO WHEN YOU GET YOUR GAUGE SET HOOK GAUGE TO LOW PRESSURE SIDE BLUE CAP PORT AND GAUGE TO HIGH SIDE PRESSURE RED CAP PORT.YOU CRANK CAR UP GET IT OPERATING TEMPERATURE.THEN TURN AC ON HIGH COOL LET RUN 3 TO 4 MINUTES.CHECK LOW SIDE GAUGE READING SHOULD BE 28 - 32 PSI. HIGH PRESSURE SIDE GAUGE SHOULD 199 - 228 PSI. THATS NORMAL CHARGE. SEE YOU CANT JUST RECHARGE AC SYSTEM UNTIL YOU CHECK IT FIRST YOU WILL DAMAGE SYSTEM .NOW YOU CAN GO TO AUTO ZONE PARTS BUY A CHARGE CAN WITH GAUGE AND HOSE.ATTACH TO IT.YOU NEED MORE THAN ONE CAN.WARNING MAKE COMPRESSOR IS RUNNING WHEN YOU TURN ON AC .BECAUSE IF COMPRESSOR NOT RUNNING CHECK FUSE AND AC COMPRESSOR RELAY.IF BOTH OKAY.YOU COULD HAVE OPEN CLUTCH COIL A FAULTY LOW PRESSURE SWITCH WILL CAUSE AC NOT TO WORK. IF LOW PRESSURE GAUGE BLUE SIDE PRESSURE IS 28 OR 30 YOU DONT NEED A CHARGE.PROBLEM SOME WHERE ELSE.BE SURE TO WEAR SAFETY GLASSES WHEN WORKING ON AC SYSTEM.

Jun 26, 2010 | 2004 Hyundai Elantra

2 Answers

Ac is low on freon where is low side to fill


The low side freon port is always located between the compressor and the accumulator. The low side port also has a blue/light blue colored cap. The HIGH side will always have a red cap.

Jun 07, 2010 | 2002 Suzuki XL-7

3 Answers

2003 Suzuki Aerio A/C problem


one ,the big one is the high pressure side, dont mess with it. you want to fill on the low pressure side. its the small connection port, usually colored blue on the cap.

Aug 11, 2009 | 2003 Suzuki Aerio

2 Answers

Re-charge a/c in a 98 ford escort zx2


Your low side should have a "blue cap" on it. If it does not, it is located on the passenger side of the vehicle near the firewall.

Jun 09, 2009 | 2001 Ford Escort ZX2

2 Answers

How to recharge a.c. unit 99 kia sephia


Yes you can recharge it yourself. You have to charge on the low pressure side. Your filler hose will only fit the low pressure side. Follow your hoses until you see a cap (usually blue on the low pressure side) and that will be your charge point.

I hope this helps you, and I wish you luck on your repair.

May 20, 2009 | 1999 Kia Sephia

3 Answers

Recharge AC on my Chevy Impala 2003


You need to follow the ac lines from the ac compressor to the ac condensor to the fire wall behind the engine where it goes to the heater box.There are two connections,both at differant locations,a low side that has a screw on red or blue cap with the letter L on it and a high side with a cap that has the letter H on it.The refridgerant goes into the low side.Hope this helps.

Mar 10, 2009 | 2003 Chevrolet Impala

3 Answers

How to Recharge A/C on a 2001 Chevy Malibu


The low pressure port is located on the passenger side next to the fire wall. It will have a blue cap.

Sep 22, 2008 | 2001 Chevrolet Malibu

6 Answers

Air conditioner


The one closest to your AC compressor... i.e. the part that the belt spins around.. Is the low side.. Not to mention, air conditioning recharge hoses ONLY FIT on the low side.. Worst case scenario, try both.. the one that it clamps down on to is the low side..

Jun 26, 2008 | 2005 Chevrolet Trailblazer Ext

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