Why does my air conditioning only work when my car is moving?

Why does my air conditioning only work when my car is moving?

When the car is moving, versus stopped, there is more air flow over the condenser (the heat exchanger in front of the radiator) and that airflow is essential to system operation. Other possibilities are that the compressor clutch is not cycling as intended or that the condenser might be blocked or dirty.

Why does my AC stop working when I accelerate?

Typically this occurs due to a bad vacuum check valve under the hood. During hard acceleration the AC door system loses vacuum, causing the doors to default to the windshield. This check valve keeps this from occurring.

How do you know if your compressor is going out in your car?

Cabin temperatures higher than normal One of the first signs that a compressor may be having trouble is the AC no longer blowing as cold as it once did. A damaged or failing compressor will not be able to properly regulate the refrigerant flow in the AC system, and as a result, the AC will not function properly.

When I accelerate my AC gets warm?

A small refrigerant leak is the most common reason a car’s A/C gradually loses its cool. A leak in your A/C system could be causing the unit to blow warm air, since there isn’t enough refrigerant in the system to cool things down.

Why is my AC hot when idling?

Your AC system is low on refrigerant. Since the AC compressor is driven by the engine, it doesn’t pump as much refrigerant when you’re at a stop or driving slowly. If the system is low on refrigerant, it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs.

What to do about intermittent a / C in Subaru Outback?

To solve the problem, I used a screwdriver to push the clutch in and out (the travel is about a 1 mm to 1.5 mm). I repeated this to all sides of the clutch to ensure that it moved as freely as possible. I then used compressed air to blow out dust from the inside of the clutch and sprayed a little oil in there to keep things lubed up.

What causes a Subaru Outback to run low on air?

In your article you state that the 2000 to 2004 Outbacks suffer from leaks at the A/C hoses from the compressor to the condenser and from the compressor to the evaporator which cause the system to run low or empty, and that 2001 to 2004 Outbacks H6-3.0 have some of the same leaky hose issues.

What’s the problem with intermittent air conditioning in Subaru?

Hey everyone! Enter your ride HERE to be a part of this month’s Outback of the Month Challenge! Just thought I’d share my problem/solution in case it helps anyone else with intermittent air conditioning. I was having a problem with my a/c system either working or blowing hot air.

Why does my car AC blow cold air then blow warm air?

But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch. Once pressures equalize, the high pressure switch allows the compressor to start up again. The cycle repeats over and over, providing a short period of cold air, followed by warm air.