my ac only works when driving

Many cars are equipped with two radiator fans while others have. Jun 24 2007.

Ac Only Works When Driving What S Causing It

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. I brought car to two VW dealerships to have their service department diagnose the problem. If this valve fails to go the proper position for refrigerant line temperature it doesnt convert the refrigerant into a gas but instead it remains a liquid and the cooling effect stops. I even refilled it by myself last summer with no issues until now.

Up to 15 cash back Second opinion When my engine fan kicks in at low temps my ac works perfectly and the engine runs at 180 degrees all day. When I drive the car and get up to 30 mph or so the vent air temp goes up and after a few minutes of driving the vent air is barely cold. Your cars AC condenser keeps your air conditioner cool.

In order for this process to happen the pressure has to be right and all the components have to work properly. A coolant system test kit can be purchased to determine whether or not there is air in the system. Normally car AC systems are built so that the higher the engine speed RPM the faster the AC compressor turns.

Many drivers are driving on the highway and suddenly their back tire locks up. The high pressure hose is designed to increase and decrease AC pressure during different driving conditions since the AC drive belt will increase in speed as the vehicle accelerates. Pushrod on July 05 2019.

Basically the AC high pressure hose. So 17500 later the shop says it was the fan clutch. A faulty radiator cap is a common cause of this problem.

Vent doors not operating correctly. As soon as you get moving it gets cold again. There can be two possible reasons why your AC is only blowing cold air at high speeds.

Answer 1 of 17. When the car is standing still I can run the. Only things done to it are the bed tool box American flags out the back and a cat-back dual exhaust system with a.

Suggest you hook up a AC manifold gauge set and see exactly what the system is doing. Not only will it disable your AC but it will bring you a huge invoice to pay. Diagnosing Lack of R-134a.

The air conditioning compressor will turn off at the slightest rise of heat due to excessive HEAD PRESSURE - however the engine will not show any signs of overheating. Tuesday July 1st 2014 AT 742 AM. Does anyone know why the AC doesnt work when the car is idle.

When not moving the fan should be. 99 for a fan clutch. This substance is vital to your vehicles air conditioning systemIt needs to be available in the correct amount.

Today when I was driving home from work the car begun to run rough the check engine light came on. R-134a is a liquid refrigerant used in vehicles made after 1996. If your car AC blows cold air when driving at highway speeds but turns warm at stop lights or when driving at slow speeds you may have a bad radiator fan or radiator fan relay.

When the coolant level is low for whatever reason air enters the system. The ac on my 2008 20 l turbo now only works when i am driving at speeds of at least 30 mph. When driving at slower speeds or idling the AC blows warm air.

To maintain good airflow when the car is in stop and go traffic or is completely stopped condenser fans will come on automatically. We just spent 2k to repair the AC after it completely went out. When I stop the car and idle it the cold air returns.

99 of the time this problem is caused by insufficient air flow into the engine bay while vehicle is in slow moving traffic or at stop with engine and a. The AC has worked like a champ for the past year since I started using this vehicle. Your air conditioner may be working but not at its intended power efficiency.

R-134a is a liquid refrigerant used in vehicles made after 1996. 36 to use the AC gauges. Feel like I was robbed to some degree.

My 1999 Dodge Dakota Sport 4x4 that I picked up last May. I popped the hood and noticed that when the AC compressor kicks on that it almost stalls the engine. Plus tax and some other 3 BS.

When the car doesnt have enough R-134a it not only causes a malfunctioning AC but the clutch will also fail to engage. I have a new 2016 Volvo xc70 only 3100 miles. The AC blows hard all the time but when you are sitting at idle at a redlight or something it goes from cold to lukewarm.

If the AC in a car only works when driving it could be due to a problem with the condenser fan. It worked fine for about a year but now it doesnt work when sitting at a stoplight or going slow it only kicks in cold when we are accelerating or driving on the highway. June 13 2017 at 136 am 881347.

Answer 1 of 12. And noticed that the second fan on the radiator never came on although i. One is that your condenser fans is either not working or is worn out to the point that it cant spin sufficiently fast to bring enough air through the condenser.

If the high side is only 175 psi and the low side is 30 you do not have enough refrigerant in the system. You need to take it to an AC shop so they can check and see if the expansion valve is working properly. There are 5 major AC system components.

2005 Dodge Ram 1500 SLT Big Horn 58L V8 Hemi my air conditioning only works when Im driving forward and does not work at all any more when Im sitting still at an idle. It is easy enough to check. So more power applied to the engine means more power applied to the compressor which.

Up to 8 cash back One of the most common causes of the symptom youre describing is when you have a bad or failing AC high pressure hose. Do not just add some in need to be recovered sucked down to a deep overnight vacuum and recharged with the proper equipment not just a can hooked to a gauge set. When it is at idle I.

Get a thermometer that goes in your vent to see if its hot as you think it is or not from Amazon HERE. This is a new problem. That is how the AC works.

The AC on my 2008 20 L turbo now only works when I am driving at speeds of at least 30 MPH. Up to 8 cash back When your car is moving say at 45 MPH there is lots of air flow over the condenser the condenser is the heat exchanger in front of the radiator and that airflow is essential to proper ac system operation. The fact that your heater only works when the car is moving is a clear sign of this problem.

Aannesley June 24 2009 951pm 4.

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