Question about 1991 Honda Accord

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I want to recharge the system with R12a. Where is the low side service port?

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Well they no longer sell R12a you would have to convert it to R34a

Posted on May 09, 2010

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Front lh side of engine comparment

Posted on May 09, 2010

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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

1 Answer

Where is the low side port for ac charge located on engine for 2001 mountaineer


4.0L , 5.0L : Back near the firewall (Evaporator) above the accumulator/drier. The line will be cold /low pressure port.
Near radiator (Condenser) is hot/high pressure port

Be careful, if unsure do not risk it. If the system is leaking this will be a very temporary fix and probably needs the service of an experienced auto AC person.

Mar 20, 2013 | 2001 Mercury Mountaineer

2 Answers

I am trying to put R134A in my car, and I wanted to make sure I put it in the low side service port, but I am having problems figuring out which one is the low side service port


The R134A connection hose will only fit on the low side service port. The high side port is bigger and will not fit that hose.

Jul 05, 2011 | 1998 Nissan Sentra

1 Answer

Where do I hook up a air conditioning recharge kit


If you follow the a/c lines on your vehicle you will notice that they are two different sizes. A larger diameter which is the low side and a smaller diameter which is the high side. Charging of the a/c system is done through the low side. If you follow the larger diameter hose/line you should notice a service port covered with a plastic cap at some point. That will be the low side service port and where you fill the a/c system. The two service ports on the a/c sys

Jun 22, 2011 | Chevrolet Monte Carlo Cars & Trucks

1 Answer

I need to know where the recharge port is to recharge A/C on a 1999 Ford Expedition


Your A/C system will have two service ports, there isn't any "recharge" ports. You add refrigerant to the LOW side only. Prior to adding any refrigerant, you need to check the system pressures with a manifold gauge set. If the system has enough charge and there is another issue, adding refrigerant can make for worse problems. Automotive A/C is best left to the right person with the proper equipment to service them. If you follow the lines from the compressor, the LOW side will be the smaller diameter of the two service ports.

Mar 31, 2011 | 1999 Ford Expedition

1 Answer

Cant find Low pressure AC port


Did you check the acumulator? There is a port on it, that is the low side port. Keep in mind that if you have to recharge the system it is because other parts need service (leak in the syst) and whatever refrigerant you put in it will leak out again. The system may work temporarily or may work inefficiently. Also may sure that there is oil in syst.

Aug 02, 2009 | 1996 Buick Skylark

3 Answers

R134a recharger nozzle won't fit on low pressure service port.


The low pressure port on the 2003 grand am is actually behind the engine, near the firewall on the passenger side. Good luck getting your hose down there though, I ended up buying an extension hose.

Jul 24, 2009 | 2004 Pontiac Grand Am

2 Answers

Where do you recharge the air cant find theplace to hook up the refill refrigerant


U SHOULD NEVER HAVE TO RECHARGE, IF YOU DO U HAVE A LEAK AND THAT NEEDS TO BE REPAIRED 1ST BEFORE A RECHARGE, THE SERVICE RECHARGE PORT IS ON THE INSIDE OF THE OF THE PASSENGER FRONT FENDER, U MUST GET AT IT FROM UNDER THE CAR, IT IS ON THE ACCUMULATOR AND NOT VISIABLE, U MUST FELL IT, VERY HARD TO GET AT, GO TO LINK BELOW FOR PICTURE

http://www.aircondition.com/tech/questions/5/

Jul 10, 2009 | 2001 Ford Focus

2 Answers

AC booster recharge hook-up


You can only attach the the recharge hose from the kit to the low side ( A/C service port) and the cap should be blue with a leter L on it. Good luck and follow the instruction and don't over charge the system. With the AC on the coldest setting, use a thermometer in a middle vent. Normal vent temperature readings will vary depending on the (ambient) outside temp. The vent temperature should range from around 42-55 degrees in my experience. If normal gauge readings are obtained and the vent air is cold - STOP don’t overcharge the system. The only proper way to remove refrigerant is with a AC recovery machine so if this is being done at home I can’t emphasize enough not to over charge the system. And actually the best way to insure the proper charge is in a system, is to use an AC machine to recover the R134a and then evacuate and recharge the system with the correct amount. Most cars have the specified amount on a decal under the hood.  Good luck and hope this helps.

Jul 03, 2009 | 2000 Saturn SL

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

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