Question about 1999 GMC Jimmy

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I need to recharge the a/c in my jimmy. Which ports or high side and low side

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The low port.

Posted on Aug 25, 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

2 Answers

Which port is the low side port for ac charging on 1997 gmc jimmy


The low side port is always the smaller fitting on the larger line. The high side is always the larger fitting on the smaller line. They do this so that the low side fitting can not be mixed up and placed on a high side port.

Jun 12, 2011 | GMC Jimmy Cars & Trucks

2 Answers

Where,exactly, IS the low line port for recharging the AC on my 2003 Chevy Malibu? OR is the coupler that came with the recharge kit the wrong size? I've assumed that most AC units have a standard...


You found the high side port. The other line should have the low side and if it is not on there it might be at the AC evaporator which is a cylinder shape made of aluminum. The cap will have a L on it not a H. Do not force it on the high side.

Jun 12, 2011 | 2003 Chevrolet Malibu

1 Answer

Where do i put the R-134a in on a 2002 volvo s60


On the low pressure valve located between the compressor and accumulator. The low pressure port has a black or blue cap covering the recharge valve. Don't worry, you can't connect the hose to any other valve port but the low side, the hose end is different from the high side. The high side has a red cap, and is not a recharge port.

Aug 22, 2010 | 2002 Volvo S60

2 Answers

Need to see a picture of high and low ports and their locations on a silverado pickup. can only find two ports on the same line -one smaller than the other.


That's them, and only ones, there's an orfic tube in between both ports in the line, that's what changes the pressure from high to low, from one end of the orfic tube to the other, the small port will be the low side, that the one you recharge in, and the big one is high side.Hope this was very helpful.

Aug 05, 2010 | 2004 Chevrolet Silverado

1 Answer

Where is low side port for recharging a/c. on my 1997 s10. I found 2 ports one on the accumulator and one on the tube, however my charging kit port only fit the port on the accumulator. I assume this port...


The port on the accumulator is the low side. The high side port is smaller than the low side. The low side port is the one that gets cold when the compressor is running.

Apr 26, 2010 | 1997 Chevrolet S-10 Pickup

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

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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