Question about 2001 Chevrolet Tahoe

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2001 Tahoe with front, rear air conditioning,, I need to add freon, where is the low pressure port? what appeares to be the low pressure port in the engin compartment ,close to the Hi pressure port will not accept the push on refill hose, could the low pressure port be in back by the rear thanks

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THE LOW PRESSURE LINE IS ALMOST ALWAYS LOCATED ON THE WIDER PIPE OF THE 2 AND SOMETIMES THEY HIDE IT UNDER THE AIR CLEANER ASSEMBLY.

Posted on Sep 19, 2010

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Posted on Jan 02, 2017

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1 Answer

Does air conditioning compressor have sensor for 2001 tahoe that can stop compressor from running


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Aug 22, 2015 | Cars & Trucks

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Where is the A/C compressor on a 2001 Chevy Tahoe


Sorry it took so long for me to get back to you on this. I have never used this site until a few hours ago, so I'm having to learn how to use it.ALWAYS PROTECT YOURSELF AND YOUR EYES AND ANYONE ELSE AROUND, when working on a/c systems. I will try to include some illustrations if I can. However it sounds to me like your system is probably just low on refrigerant. It will have a "Low Pressure cut off switch" that will make the compressor cycle on and off if the system gets low on freon. There are other possibilities, but low pressure is the most common cause for your type of problem, which means it will have a leak somewhere in the system. Hopefully for your sake it is a slow one. I have seen them to where they would just need a can or two of freon a year. If you have gauges to hook up, that is the best way, but if not you can always get a refill kit from a parts store. (Probably $20 to $40) Start adding the freon ( R134A ) in your case, to the low pressure side of your A/C unit. The do it yourself kit should have an adapter that will fit the low side only. As you add the freon, your compressor should start to stay running at longer intervals. Do this with the Tahoe running and the a/c on MAX, and both blowers on high. I am figuring your system has a front and rear unit, as on most Tahoe`s. If you don`t have gauges, and this is working, it should also start to cool down, as the comp. starts to run more continuously. Fill it ( ONLY providing this IS working ) until the compressor runs constantly, then add approximately another 12 to 20 ounces. This should get you pretty close. If you have a refill kit with one of those little gauges you can follow the instructions, or get the low side around 30 to 35 psi.at a fast idle. You may need someone to hold the throttle down a little for you, to run the engine at about 1000 to 1400 rpm. That also helps the freon to go in faster. Now, providing that did the trick, hopefully it will last you the rest of the summer. Remember to always be careful and use safety goggles around pressurized a/c systems. Good Luck!
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Where is the low pressure port for the air conditioning on my 2002 chevy tahoe


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The gas your talking of is Freon 134a bought in 1 pound cans with a kit to allow you to regfill the system using the kits low pressure port connector and install a 1 pound can to see if all is well before you add too much more.......the whole system usually holds only 2- 2-3/4 cans empty.

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How do i add freon to my 2001 chevy tahoe


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I have a 02 chev tahoe,with dual a/c.no cold air is blowing.compressor is cycling on/off at a fast pace.i see 2 ports on thin a/c line,but i think these are high pressure line ports?im tring to find low...


freon level is low . One of those 2 ports u see will be the one u want. It will be the smaller of the 2 as the refill hose will only lock onto the correct fitting.

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How do I add coolant to the air conditioning system of my 2001 Hyundai Elantra?


You need to locate the low port on the AC.

You recharge the AC connecting to the low port.

You find the AC low pressure at the top of the compressor. Near the compressor you find two ports, the high port and low port.
You can follow the compressor line to reach the port.

To find out which one is the low port, run the air conditioner for a couple of minutes withthe engine on.
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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.

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3 Answers

AC is not working


Sounds like the A/C system just needs to be recharged. When was the last time you had this done? Just take it in to your mechanic and he can do it for you and if that's not it for some reason, then he will be able to find the problem but most likely you need more freon added.

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Hi, my best advise is to have your air check for freon leaks ,low freon causes the compresor cluth to stop working ,this can cause the air to blow hot .......

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