Question about 2001 Audi A6

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Audi A6 air conditioner problems

Compressor runs intermitently, guage fluctuates from overpressure to normal, thinking maybe cloged orifice tube, please help

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This is the problem with ac unit belt must be struck or the it may clogged get it checked or the Ac is weak get it service ........................

Posted on Jun 04, 2008

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Air conditioner blows heat, conditioner was charged, freon, checked relay switch, fuse, door blend alol fine still hot air, was told maybe a block in V shape hose is it temp control value Help


Only way to tell if A/C Evaporator Core Orifice tube is plugged is by looking at A/C gauge readings , An if it is plugged you more then likely need a new compressor , they become plugged with metal particles from worn out compressor. Your best bet would be to take your vehicle to a qualified repair shop .

Jun 27, 2016 | 1998 Lincoln Navigator

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What could cause a popping sound coming from around the A/C compressor when I turn on the air condition. Seems like a overpressure. What could cause this? .


There is a high pressure pop off valve on the compressor. This will usually go off indicating a blockage in the system. There is an orifice tube/ filter in the system that is the probable cause of the blockage, but you figure that we are talking about a sealed system that does not allow foreign materials into the system from outside, so if there is debris in the system that has clogged the orifice tube, where did it come from? The only moving component in the system is the compressor. I bet there is an expensive repair in your future.

May 25, 2016 | 2008 Chrysler Pt Cruiser

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Air conditioner does not start immediately


You may well have a ccot system. Cycling Clutch Orifice Tube. Rather than having a adjustable expansion valve, they use a fixed orifice for an expansion valve, then turn the compressor on and off to maintain correct pressures. This does produce higher fuel mileage. It is not necessary to run the compressor full time to achieve proper cooling.

Oct 27, 2012 | 2002 Chevrolet Impala

2 Answers

The low pressure on the air conditioner is reading to high


Several things will cause this, but most often it is a tiny bit of moisture trapped in the system.
Have the system completely evacuated with a deep vacuum. Then recharge it to mfrs. capacity.

Aug 08, 2011 | 2001 GMC Sierra Crew Cab

1 Answer

Why did the can of R134 freeze when I charged the air conditioner on my 97 Chevy Cavalier? The low side line to my air conditioner (where i hooked up the can of r134) froze as well and my air conditioner...


History?was it working before? you cant just hook up a hose and put it in. First find out why compressor wont run, If it needs compressor, it needs a drier and orifice tube, put on a vaccuum pump for 1 hr then recharged with the correct amount of r134. You need someone who knows a/c to look at it.

Jul 22, 2010 | 1997 Chevrolet Cavalier

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I just purchased a 2004 Audi A6 with 2.7 turbo engine with 65000 miles. . The oil guage shows in the low range. {150) The warning light is not on. Is this normal? or could this be a future problem?


Oil is cheaper than metal.Turbo motors run a lot hotter than non-turbo motors and need more frequent oil changes.1st thing to do would be get the oil changed with a good quality oil and also do the filter.Hope this helps

Dec 20, 2009 | 2004 Audi A6

1 Answer

Where is the orifice tube on a 1998 Honda civic ex?


You have an "expansion valve" which does the same job as the more common "orifice tube" most other cars have.

Is the compressor running but you do not have cold air?
Then you may need one.

Is the compressor not running when the A/C is turned on?
Then look for a low level or no refrigerant in the system,a bad compressor and/or a system electrical problem.
The high pressure cutout switch on/in the compressor is a common problem if the compressor will not run with a fully charged system.

Sep 07, 2009 | 1998 Honda Civic

1 Answer

What do I have to do to change the a/c compressor are there any special procedures or can I take the old one off put the new one on and then charge the system with coolant I have a 1996 oldsmobile delta...


if old compressor fail your air condition has to be discharge at dealership or a garage that does ac repair.then the ac lines has to be flushed out before putting on new one. because old one when it fails clutch lock up or compressor fail.small metal particles get in line.stop up orifice tube.you will have to replace orifice tube the accumalator .you will need vacuum pump to pump down air conditioner .to get moisture out of system.you will need a manifold gauge set for air conditioner.ac tools are expensive.it would be cheaper to buy compressor - accumulator - orifice tube. take it to a good air conditioner mechanics.let him put parts on and pump down system.then charge it up.because buying tools to get ac going .is going to cost $475.00 thats the vacuum pump price.you can buy a cheaper vacuum pump that works from air from a regular air compressor you pump tires up with.manifold gauge set causes from $100.00 up to $300.00 for a good set.another thing you have to be familiar with working on air conditioners you put too much R-134 in system you will damage compressor or get seriously hurt.

Jul 05, 2009 | 1996 Oldsmobile 88

1 Answer

Air condition


Check the cooling system, particularly the radiator to make sure it is not partially plugged. Additionally, check the radiator fan for proper operation. If the engine temperature is running way above normal, some of the heat is transferred to the air-conditioning condenser, which causes the air-conditioner to lose efficiency. As for your question about a "limiter" switch, there is a high-pressure switch in the air-conditioning system that cuts the compressor out when the pressure gets too high.

May 19, 2008 | Mercury Marquis Cars & Trucks

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