Question about 1998 Volkswagen Beetle

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Where is locate the low presure valve to inject freon in 1998 wv beetle

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On the firewall behind the intake manifold!

Posted on Oct 07, 2010

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The AC in my 2003 VW Convertible is not chilling enough. What can I do about it?


Your system may just be low on freon. Most auto parts stores sell 134a freon for about $10 a can. If you visit an Autozone store the parts counter personnel might also show you how to add freon to the VW Beetle, it's not hard once you know where the correct port is located. You simply start your car, connect the freon dispensing hose to the AC port (there are two (2) ports, but the hose connection will only fit onto the smaller of the two (2) ports - the low pressure side). Allow the car to run while the can is discharged into the AC system, generally takes 10-15 minutes. Most dispeners have a freon pressure gauge on the hose portion that attaches to the can. Never disconnect a partially empty can unless there is a shutoff valve, and the valve is closed all the way. Better to add the entire can to the AC system.
If you have never added freon to your 2003 VW Beetle, that's the most likely problem. You could also have developed a slow leak in the compressor or AC lines, so I recommend adding freon WITH a sealant in the same can just in case.

The job would cost between $45 and $65 if you take it to a reputible mechanic to perform. That usually includes a full blown pressure test of the AC system. and a whole list of costly recommendations.

May 01, 2014 | 2003 Volkswagen New Beetle Convertible

1 Answer

Coolant leaks while sitting. can expansion tank cap cause this


this case exp. or reservor tank cap have valve ( presure valve ) incase of high presure .or water not on level (more high) , to make sure these is no anther problem . check your engine when it's coold , open the cap then start look there is bubbls (air come out when its coold)if no remove the small breather hose goes to exp.tank up .then accilarate some water must be out from this hose make sure it's open . if stiil you can replace the cap.

Aug 06, 2011 | 1998 Volkswagen Beetle

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The a/c has a restriction & will not allow the Refrigerant to charge up. Can you tell me if this sounds like a metering device problem, or a drier blockage, or both?


this sound from expansion valve , befor refrigarator . this valve for balance presure between high/low presure lines . the drier should replace (more laod to compresor ) leve the vehicle for 20min and check persure high/ low mustnot big difrent

Jul 06, 2011 | 2000 Volkswagen Beetle

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My AC wont blow cold. As soon as I put freon in it, it blows cold for about an hour, then hot again. My friend told me that the orifice tube in his car needed to be replaced because it was convertine the...


Sounds like you might have a leak. If you charge the system and works for a time ,(hour, week, year) and then quits it sounds like perhaps the freon is leaking out somewhere. Freon does not ever get converted to air. Freon is in several states of existance while it is in your system. It is a high presure liquid, high presure gas, low presure liquid, and a low presure gas, but it is still always freon.
The valve your friend is talking about is called an expansion valve. What it does is to take the high presure "liquid" freon and allows it to pass into a low presure zone called an evaporator at a regulated rate. When you take freon at a liquid state high presure condition and expose it to a low presure environment it "evaporates" ( thus the name evaporator) and it gets very cold when it does this. This is where the cold air you feel coming out of the vents is made.
But the freon is in an enclosed system. By this, I mean it is never exposed to air, moisure (water), or anything else. I goes through all of these changes while inside this enclosed system.
Therefore, if the enclosed system is good then the amount of freon inside it will not change. If the amount of freon doesn't change then adding more will only make things worse.
I would suggest having the system checked with a hologen leak detector and/or system dye to find the leaks. Remember, if you have to add freon, then the freon that was there before must have escaped from somewhere.
Find a reputable shop to check the system for leaks. If it is leaking bad enough to run low in a hour it should be an easy to find leak.

Apr 13, 2011 | Chevrolet Cobalt Cars & Trucks

1 Answer

What is the 134-a-Freon Compacity for a 1998 chevy Silverado & also the pressure for the low side & high side


The R134-a refrigerant should be 1.80lbs. and the presures are dictated by the system it's self which they should be around the same pressure.If the low side is much greater than the high side and fluctuats greatly as it is running you should replace the orafice tube which is located in one of the metal lines near a connection.You can locate the orafice tube buy looking for three little dimple crimps about 3 inches from one of the connections in the metal line.

May 09, 2010 | 1998 Chevrolet C1500

2 Answers

The AC unit doesn't come on anymore


CHECK FREON PRESURE IF LOW A/C COMPR WON'T COME ON IF PRESURE O.K, CHECK A/C FUSE, RELAY AND LOW PRESURE SWITCH LOCATED ON ACCUMLATOR.

Nov 10, 2009 | 1999 Ford Escort

1 Answer

Low oil presure


if there is no oil presure ,replace oil pump

Jul 06, 2009 | 1998 Cadillac DeVille

1 Answer

Can't locate the Low Pressure Side service port of 2001 VW Beetle


Unfortunately I am aware of no pictures or diagrams. There are two connections, a low pressure and a high pressure connection. The high pressure connection is found between the engine and the firewall. The low pressure connection is in front of the engine along the inside lip of the hood closure. As you open your hood, it's located just in front of your lefty knee. The connection is on an aluminum tubing, and mine has a black screw cap on it. Not sure if the cap varies in colors, or whether your may have been removed. The connecting hose from your freon refigerant H134a will ONLY fit onto the low pressure connection. The charge is just a bit more than 2 pounds of freon. In a 2001 you may need to add more than i can if the car has never been recharged, but start with one can and see how it goes. You may also want to add a freon with a sealant just in case you have a small leak. One can is approximately 13 ounces.

Jun 07, 2009 | 2001 Volkswagen Beetle

1 Answer

Where is the a/c relay switch on the 1998 vw beetle


the relay for the A/C is in the fuse box.  However, you will also get no power to the compressor clutch if you are out of Freon..  You may need to jump the low freon switch to refill the system.  Good luck.

Apr 24, 2009 | 1998 Volkswagen Beetle

1 Answer

Air Conditioning


#1 you will need r134a freon. #2 the low side service port is located right at the firewall where tha line goes to the evaporator. #3 if wou bought a can of 134a freon with a hose that will hook to it, it will work. all service fittings for 134a freon are the same even though the high side and the low side will always differ

Aug 18, 2008 | 1998 Oldsmobile Cutlass

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