Question about 1997 Lincoln Continental

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Need to recharge the a/c don't know where low pressure valve is

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Just to the left of the radiator cap is a tube sticking up with a black cap...if you have the 3.8 V6

Posted on Aug 03, 2009


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Don't know which valve to use for recharging 2005 Sienna

the low pressure with the blue cap, they are different sizes so you can't connect to the wrong one.

Sep 29, 2012 | 2006 Toyota Sienna

1 Answer

I want to recharge my AC refrigerant but I don't know which valve to use. It has 2.1 by the radiator and 1 by the passenger side firewall.

your hose will only fit the suction side, it is the smaller valve (the hose on the suction (low) side is wider than the high pressure side too).

Aug 08, 2011 | 1991 Honda Accord

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A/C Recharge. Need to know where the recharge valve is on the C280 Mercedes. I see a knob but don't want to break the black plastic knob off.


Jul 19, 2011 | 1995 Mercedes-Benz C-Class

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Need to find low side a/c vaulve

Hi: You'll find the low pressure port on the Passenger Side, On the Fire wall you'll see Siver Canister and Silver lines.Which are from ot to your Evaparator thats in Side a Cover.Just Floow The Smaller Lines From There Toward the front towards your Condenser you Should Find a Small line with a Plastic Cap on that Line with the Letter ( L ) on It. The one with letter ( H ) is your High Pressure Side.Don't try to Recharge your A/C There .Dangerous. If your Cap with the Letter (L) is Missing You'll see a Threaded Outlet with what looks the Same as a Valve Core in A Tire.BUT don't Remove it,For the Valve is a 1 Way Valve so When Recharging Your R-34 Does'nt Escape.The Recharge Hose will Fit right Over that Valve Remember LETTER ( L ) Low Pressure Side. Hope this gets you the Cool air you Need.Let me Know By Voting on the Quality of Solution i Have given You. And You Can also Write A Testamony. There not Required but are Appreciated; from d_hubbs

Jun 02, 2010 | 2004 Ford F150

1 Answer

Low Pressure Valve 97 Grand Am

The low pressure valve is down by the AC Compressor. It is part of the aluminum manifold that connects directly to the AC compressor. It is accessible from above, but easier to reach from under the car.

By the way, is there any particular reason why you want to recharge your AC system? If it isn't working, adding refrigerant will not necessarily fix the problem. If the refrigerant has all leaked out, you probably need to evacuate the system first.

Jun 26, 2009 | 1997 Pontiac Grand Am

2 Answers

2004 Lincoln LS A/C Valve

In order to charge, you must locate the low pressure valve to install the refrigerant. The low pressure valve is between the compressor and the evaporator. Do not charge on the High Pressure side, The high pressure valve is between the compressor and the condenser. To locate the low pressure valve, follow the line that comes from the compressor and routes toward the firewall. The valve will be somewhere on that line. Do not overcharge. The amount of pressure that is needed on the low pressure side will depend on the ambient outside temperature.

Jun 21, 2009 | 2004 Lincoln Town Car

1 Answer

Air Conditioning

It's on the back wall under the hood on the drivers side. I just recharged mine.

Jun 01, 2009 | 2001 Oldsmobile Intrigue

2 Answers

How do I recharge the AC freon on my own?

You should have R12 freon in a 1990 but you can put R134 freon into that system the only problem your going to have is the adapter for R12 is different from R134 after you get the adapter you need to put the freon in the low pressure valve not the high pressure, you will know which one because the adapter only fits the low pressure valve which is located on your AC lines under your hood, theres a little cap thats either blue or black you unscrew. You can't buy r12 anymore because its not good for enviorment so buy R134. you can buy at any parts store for like $5 to $10.

May 28, 2009 | 1990 Honda Accord

2 Answers

AC has stopped blowing cold air. Compressor is working. Where is the recharge valve located?

There are two A/C refrigerant lines. The small line is your high pressure line and the larger line is your low pressure line.
Start at the fire wall and follow the "large " low pressure line to the compressor. The low pressure charge port will be some where on that line.
DO NOT try to recharge on the high pressure side ( small line )
Good luck, let me know.

Apr 26, 2009 | 2001 Saturn L-Series

2 Answers

Locating low pressure valve on 96 explorer for ac recharge

The largest diameter line is the suction which is low. The small one that runs to a coil by radiator is high pressure. If there is no cooling then you may have air in the system which means a leak must be fixed first. Are you sure the compressor is engaging? You should hear it click and the engine bog down a little.

Mar 27, 2009 | 1996 Ford Explorer

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