Question about 1994 Ford Taurus

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Adding 134-a where is lowside port located on 1994 ford taurus? these kits you buy, do they work?

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First thing: Be extremely careful! Secondly, I'm not sure what year that all the auto manufacturers switched from R-12 refrigerant to the R-143a, but if your car came with a system that used R-12, you need to buy the conversion kit that includes the modern retro-fittings (adapters) because on an outdated system, both service fittings on the car's service ports will be too small for the modern updated attachments R-134a refrigerant charging attachments (they made the fittings between the two systems different on purpose). R-134a is not compatible with R-12 at all and if the two are running in the same system, it can cause irreparable damage to the refrigerant (A/C) pump and can even potentially cause the pump to seize, throw the accessory belt and then cause the motor to overheat and seize because the water pump no longer has a belt to turn it.....This is what I mean by BE CAREFUL. Check the tags under the hood because they will specify which refrigerant was used. If it IS an R-12 system, you need to take it to a qualified A/C Technician who can evacuate the lines of all the R-12 (freon) in the system. Not only is it more thorough to go to a qualified Tech. for this, but R-12 is not environmentally friendly and causes damage to the ozone layer.....Most people either don't know or don't care and will just evacuate the lines them selves with a valve stem core remover or a nail to depress the pin on the valve... I don't recommend that method but it is up to you.

If your system IS in fact an R-134a system, then just add the O-ring oil and the refrigerant as directed.

At any rate, your original question was where the low service port was located and I'm sorry about the novel I wrote you, but I'm just I'm just trying to be thorough and look out for you at the same time.....BUT the location varies by manufacturer and model but just find the A/C pump then follow the two "send and return" lines going back towards the passenger compartment. You will eventually find a service port on one of the lines. The other line goes to the accumulator which looks like a big aluminum canister. The other service port is located here and should be on the side of the accumulator towards the top. Good luck!

Posted on May 12, 2009

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On my Ford 2002 Taurus SEL the A/C compressor clutch will not remain engaged. In warm weather the a/c works perfectly. What could my problem be.

Have your pressure checked. It sounds like it may be a bit low.You could also pick up a can of r-134 freon and an installation kit. Install the freon according to the directions,and see if it stays engaged now.

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I am looking for the low side a/c port. Where is it located?

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Need to know if my 1993 ford club wagon is r-12 or r-134 is there any way to tell from fill ports? the r-134 CANISTERS FIT ON THE LOWSIDE, ARE THE R-12's a different size?

If it is a quick connect fitting, it is R-134a
The low(charge) side fitting is: 13mm
The high side fitting is: 16mm

If it is a threaded fitting with threads on the outside, then it is the older R-12 refrigerant and can only be serviced by a licensed air conditioning service.

The low(charge) side is 7/16" threads
The high side is 3/8" threads

When servicing your air conditioner it is best if you have gauges, but it can be done without, just be careful.

Assuming the air works, but just not putting out that much cool air, then 1 or 2 cans of refrigerant won't hurt.

If there is no pressure/refrigerant in the system at all then it is usually a sign of a leak and should be taken to a pro because you may need to replace the receiver/dryer and have the leak fixed. The system needs to be evacuated for maximum efficiency if there was a leak or if hte system has been opened.

Adding too much refrigerant can be catastrophic as the high side pressures can reach 200-300psi on a hot day. So if you happen to have a low side gauge, and it reads somewhere between 35-45 with the Ac operating, you are golden.(tire gauge won't work)

Don't be surprised if the compressor doesn't kick on right away. Some vehicles are equipped with a pressure switch to keep from damaging the compressor if it runs low. Usually after adding one can, it is enough to engage the compressor.

Hope this helps.


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Where is the low side service port on a 2003 grand am (6cyl)

If your talking about the low side sevice port to charge your ac, its easy to find. With your recharge kit, it comes with a nozzle to attach to this lowside port. Each port, (lowside and highside), are different diameters. The charging nozzle will ONLY fit onto the lowside port. Just run the length of your ac lines from the compressor and trace them back to the firewall. You should find both ports before you hit the firewall.

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The low pressure side is the line that gets cold when the ac is running. It usually will have an inline dryer canister attached to it. Kind of about the size of a 16 ounce beer can. Close by you should see the port connection to add more freon or r-134 whichever your system uses.

May 21, 2009 | 1993 Ford Taurus

2 Answers


things you need(to do it properly) vacuum pump,r134a gauges and leak detection of some sort first locate lowside port connect blue connector from gauge to it (lowside is the skinny hose)connect vacuum pump to yellow line open valve on blue guage manifold.
pull a vacuum to less than 30" hg for thirty minutes.close bluevalve on manifold watch needle make sure pressure doen't rise if no change in pressure after 15 minutes no leak.if pressure does rise then you have a leak and need to find it.(cheap/messy way use get a can of 134 with dye in it fill system and let it run look for dye on system usually on pump around back of clutch,unless you replaced a compnent recently then check all fittings and seals.)
you will add r134a through the yellow hose.

Apr 22, 2009 | 1998 Dodge Ram 1500 4WD

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Aug 07, 2008 | 2000 Ford Expedition

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1994 ford taurus body type 4s

go to auto zone and buy a 134 recharge kit follow the directions on the box, you will need to find to LOW side service port there are two ports with plastic caps on the ac lines you are looking for the one that is attached to a larger diameter ac line. the kit will ONLY FIT ON THIS FITTING so you dont have to worry, there is a label under the hood somewhere thats green and says how much 134a you should install be carefull wear safety googles and good luck, please rate -jeff

Jul 22, 2008 | 1994 Ford Taurus

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