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What can cause refrigerant pressure to fluctuate back and forth while unit is running on cooling-mode?
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What should the low side refrigerant pressure be on a refrigerator while it is running?
70
What is the running pressure of car airconditioning suction and discharge pressure using 134a refrigerant when operating?
35suction pressure in 1000 rfm
What is the refrigerant pressure for low and high side?
This requires knowing type of refrigerant and temperatures the system is running at. The test or work book will have all this info so you can work it out.
How do you get ac colder in a 94 ranger?
Check the refrigerant level. Your vehicle probably uses 134A refrigerant so it shouldn't be too expensive. If the refrigerant level is low, someone can add refrigerant for you or you can purchase the tools and do it yourself. Refrigerant is added with the engine running, and to the "low" side. Never allow the "High" side to be over pressure.
Is there an upper limit to High Head Pressure?
This depends on the refrigerant and the condensing medium, but essentially:R-22: do not consistently exceed 275 psig running pressure;R-410A: do not consistently exceed 445 psig running pressure.The HVAC Veteran
Will the 2001 Impala AC recharge if compressor is not running?
It depends. If the system is low on refrigerant then the compressor will not run until there is enough refrigerant to satisfy the low pressure switch. As you add refrigerant the compressor will cycle until enough is in the system to keep the compressor running continuously. A 1lb. can of R-134a costs about $6.00. It's worth a try. Might be enough to keep you running all summer depending on the size of your leak.
Why want your 2001 town in country take freon when someone make and attempt to put it in because it no longer cool?
It could just be a matter of time to put enough in to start the compressor running. If your compressor is not coming on the two sides have equalized and now the low side line is higher in pressure and the pressure from the can is having to fight the pressure on the line. It could take 30 to 45 minutes to get enough refrigerant in to start the compressor running. Once the compressor is running it will then start taking the refrigerant in faster.
My high and low pressure r134 readings are 90-95 each.what should the refrigerant r134a high and low pressure readings be?
If the pressures are always equal running, the compressor is bad and would need replaced
You have a subaru legacy 1991 the ac stopped working the compressor is engaging on and of constantly did put cooling in it but still dus not work Have anybody any idea where to look for the problem?
If you added refrigerant, was the compressor running better before or after you added refrigerant? Compressor cycling on-off can be caused by defective low pressure switch (very rare on Subarus), or low on refrigerant. Best to test with a good refrigerant gauge-- resting pressure (system off) should be between 45 and 80 psi (higher pressure with higher temperature) on the suction side. Make CERTAIN you attach the gauge to the suction side (the side with the larger diameter hose). When the compressor cycles on, if suction pressure drops below approx 23-29 psi, the low pressure switch will shut off compressor to prevent damage. If low suction pressure, cure is to add refrigerant, little at a time. NOTE: Refrigerant is under high pressure, and is very dangerous. If you are not trained to handle refrigerant, suggest take this problem to a shop to check out.
Oil pressure on Chevy Tahoe while running?
The oil pressure gauge will fluctuate on a Chevy Tahoe when the vehicle is idling and when the vehicle is driven at highway speed. Idle is usually 30 psi oil pressure or slightly more. At highway speed, the oil pressure should be between 60 psi and 80 psi.
How do you Charge air 1994 buick sky lark?
To charge the air conditioning in a 1994 Buick Skylark, you will need to locate the low-pressure port on the AC system. It is typically located near the firewall on the passenger side. Attach the refrigerant hose to the low-pressure port and slowly add refrigerant while the AC is running. Be sure to follow the manufacturer's guidelines for the correct type and amount of refrigerant to use.
Would low refrigerant pressure cause the air conditioning compressor on your 1993 Chevrolet G20 van to cycle on and off?
Absolutely, in fact, if the AC compressor is cycling like that, low pressure is about the ONLY thing that can cause it. There is a pressure sensor in the low pressure side of the AC system. When the pressure drops too far it turns off the compressor to prevent damage. As the compressor runs it pulls refrigerant from the low side, compresses it and sends it to the condenser where it is cooled. When that happens there is less refrigerant available to the low side. There is no point in running a compressor if there is nothing left on the low side to compress, so it shuts down. After enough refrigerant works past the orifice and into the low side again, the low side pressure builds up and the compressor restarts.
