Question about 2002 Chevrolet Silverado

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I have had the engine replaced recently and all the freon for a/c leaked out. i oiught a freon kit but can't get the kit hose to connect. am i using to wrong port?

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If the fitting is to big for your hose yes it would be the wrong port. You are looking for the low side port. Now don't quote me but I believe the fitting is either on the reciever/dryer or try looking directly on the compressor, I believe the 2003's fittings are located there. I hope this helps and good luck.

Posted on Mar 25, 2011


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DEBBIE, the system already had a leak=oily hoses, so it's already DISCHARGED.

besides the R134a freon that you need, you'll probably have to add some special OIL to it as well or else you risk damaging the compressor!

using one of those freon kits w/ some sealer and uv dye already added may or may not help, depending on how bad the leak is. for those DIY kis, the valve is only going to be attached to the LOW side of the system (one size - one fit) all the r134a systems will have 2 sizes so you can't tap into the high side with those DIY kits

but then, you'll just be guessing at the amount of AC compressor oil to add as well... so a pro may be needed to complete this job properly

when the leak is found & repaired w/ a new gasket/ o-ring/ or whatever part that had failed, the professional will evacuate the system & keep the vacuum pressure for a few minutes to confirm no more leaks after the repairs.... this also makes sure there is no residual moisture to rust out the parts from the inside. then he measures the correct amount of freon and "recharge" the system.


Mar 17, 2015 | 2006 Nissan Altima 2.5

1 Answer

1996 Chevrolet Beretta. Where do I add freon?

attach the recharge kit to the valve under the blue cap on the lower front of the vehicle, between the engine and radiator. The hose end from the kit, will only fit the proper size fitting on A/c system. The right fitting is there! Good-Day!

Sep 01, 2014 | 1996 Chevrolet Beretta

1 Answer

How do I find and repair a/c freon leak?

There is a kit for finding the leak. First degrease any parts related to the AC system (hoses and lines especially). Most auto parts stores sell a kit that has a UV (ultraviolet) dye in it for this purpose. You charge the system with it and after a few days of running it you can shine a UV light on it and the area where the leak is will glow and show you the general area of the leak.

Aug 23, 2014 | 2001 Dodge Dakota

1 Answer

2000 VW Passat GLX Wagon. I want to add Freon. The car has been sitting 2 months. It blows fresh not cold. Cannot locate the low port. There are two together. On one the R134 kit hose does not fit. The...

If you have a 2000, then it should have 134 and the Freon kit will only connect to the low pressure hose. The two different sizes keeps DIY'ers from blowing themselves up by mistakenly connecting to the high pressure port. If you see the bright green dye, that connector may be what is causing your Freon to leak. Make sure the cap goes on snug once you've filled it. You may need a new connector installed if you see it bubbling out after filling.

Sep 17, 2013 | Cars & Trucks

1 Answer

My 2000 mustang seems to have sprayed out looks like freon from somewhere and now doesn't work. Where might have this come from?

Hello, There are several places that can leak. What you see staining the engine compartment is most likely compressor oil that came out with the Freon. Any part of the system can leak.

The A/C system has a series of hoses connected with "O" rings and you need a special tool to replace a hose or replace an "O" ring. Now Autozone, Advance, and Oreilys autoparts have tool loaner programs. You would have to check to see if they have that tool. Once you find your leak, you probably will need it as the components, big or small have that type of connector.

There are some kits which help find leaks. My preference is a UV light kit ($20) which has a can of Dye that will do 4 or 5 Applications and has a set of yellow goggles and a UV penlight. It does not take much, but you will need to jump the low pressure compressor switch to get the dye to circulate and may need to add a sacrificial can of Freon($10-$14) to get pressure for the test.

Since the price of Freon has gone up, my advice for leaks has changed. There are Sealing kits for the A/C system, from $10 to $35 Dollars. If you want to detect the leak add another $8 to $20.
Then if it is a hose leak, you will need to order it. You will need to purge the system of air with a loaner Vacuum pump(Autozone). Then add an Oil charge $5-$8 and fill with 2 or 3 cans of Freon at $10 to $14 each.

You will pay for the Freon regardless, whether you do it or have someone else do it. But if you pay someone to fix it you will not have to buy Leak detectors, sacrifice Freon for a test, obtain a loaner Vacuum pump, or chase parts down. With Freon selling for $10 a can more this year than last, it costs to DIY.

If you take it to a place, ask what they will charge if it is just an "o" ring and see what kind of answers you get. Then pick a place using that answer.

Aug 06, 2011 | 2000 Ford Mustang

1 Answer


You need to check the freon level and if that is good check the compressor. If you have no pressure on the low side, when I say pressure on low side I mean vacuum, then most likely the compressor is bad or you have a leak someplace. You can get a freon fill kit at Walmart, Target, Auto Zone and most any auto parts stores. These kits comes with a gauge and connection hose. Typically if the freon is low the compressor won't activate. Connect the fill hose to the low Side of your AC and turn the AC on to Maximum with the engine running. If its a low freon problem the compressor will start to kick in as the pressure increases. Make sure you don't overfill the system as this will cause a seal or line to blow. Being a 1998 your vehicle should use R134A freon which is what can legally be purchased by a home mechanic. It cost about $12 to $20 a can and usually includes a leak detector additive and seal conditioner.

May 03, 2011 | 1998 Ford Ranger SuperCab

2 Answers

How do you jump a/c compressor so it will take the freon?

The interuptions in compressor engagement is due to low side drops which is controlled by the pressure switch mounted on the low hose or large metal accumulator on the passenger side. Low side hoses are larger and the accumulator is on the passenger side engine compartment...a paper clip works fine jumping this low side pressure switch out until freon pressures increase enough to keep compressor running to accept freon.

Jul 19, 2009 | 2000 Dodge Stratus

5 Answers

Where does the freon go for a 99 expedition

Hi .. I just ran into the same problem .. I have a 2000 Expedition with the 5.4L engine .. the low side port is located on the passenger side of engine compartment just below the black metal bracket that contains electrical connections right in front of the firewall... you have to reach under this and locate the low side (larger line) and feel for the connection .. it is right in front of the accumulator .. There are two heater hose that hide the port .. you have reach under these to unscrew the port cap which is black .. you'll have to do this by feel .. I have found that you can by R134A charge with dye and leak sealant helps with small leaks .. if the system takes more than two cans be usre to add refrig. oil .. hope this helps

Jul 19, 2009 | 1999 Ford Expedition

2 Answers

Air conditioning blowing out warm air was blowing out cold air gradually over a week it became warm

The Air-conditioning needs to be re-gassed. Take the car to an Auto Mechanic to get the Air-Conditioning re-gassed. They might also need to check it for leaks to make sure the gas stays in.

Jul 13, 2009 | 2005 Chrysler 300

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