ac only works when driving slow

Check your car air conditioning with a professional. Is it possible to repair it yourself at.

Ac Only Works When Driving What S Causing It

One is that your condenser fan s is either not working or is worn out to the point that it cant spin sufficiently fast to bring enough air through the condenser.

. AC condenser blockage. It may be slipping. This can result in warm air when the car is stopped.

Mechanical problems in the dash. How much does it cost to fix this error. Does this indefinitely making the truck sound like its idling funny.

Frequently getting debris into the air conditioning system can make your car AC not work when idle. Hydraulic problems under the hood. Reasons Why AC Only Works When Driving.

Then it kicks off for about 2 second. Electrical problems in the dash. Another cause is that the AC compressor is not working properly.

When running diagnostic on AC system it states that their is voltage to the compressor but the compressor does not turn on. When the car is idle the air conditioner does not pump cold air which is a very usual problem. Your AC only working when the car is moving could be due to a lack of enough refrigerant.

Get a thermometer that goes in your vent to see if its hot as you think it is or not from Amazon HERE. This will cause the AC to work but poorly. 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.

And turn off but if I have some one rev the engine it will kick on and stay on at about 1500rpm and the Ac works normally I have no leaks. To maintain airflow when the car is in stop and go traffic or is completely stopped condenser fans will come on automatically. As well when your car is stopped no air is flowing through any unblocked parts of your condenserso no cool air is passing through the cabin.

Check the tension of the AC drive belt. A Faulty condenser fan. Low refrigerant levels will cause a lack of AC system pressure when the engine is idling.

When your vehicle is at idles the RPMs are usually low around 700800. Debris also can cause broken or blocked condensers. Look for moisture around the outside of the AC fittings.

Missileman July 31 2015 328pm 2. This will indicate a leak. The freon level is good and.

If the compressor is not engaging or if it is not pumping enough refrigerant this could also cause the AC only to blow cold when driving. There can be two possible reasons why your AC is only blowing cold air at high speeds. The airflow from driving helps keep the fan working so when your car stops so do the fan and your AC.

This part is responsible for transferring the heat coming from the system and dispelling it into the atmosphere. Finding out why your automobile air conditioner isnt blowing cold air when its idle should start with checking out the cooling fan in the condenser which should be the first item you check out. The only time it will turn off when the AC button is depressed and blower fan is on is if the low side pressure drops too low or the high side pressure goes too high.

How to fix it. My AC works till I stop and then blows hot. My one issue is the AC doesnt work when the truck is idling.

Regular maintenance of your car can be the best way to prevent debris from getting into the car AC. Electric problems under the hood. If your condenser has a blockage youll need to clean it out.

It needs to reduce the temperature so the refrigerant can condense properly. Otherwise the clutch will stay engaged all the time but the compressor itself will displace more gas when the system is first turned on. If the compressor is cycling on and off than the system is just slightly low on freon.

To put that into perspective the tachometer generally maintains 20002800 RPM when the. It is easy enough to check to see if the fans are working or not. Another cause is that the AC compressor is not working properly.

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. If the coolant level is low or there is a leak in the system this could cause the AC only to blow cold when the car is moving. When Im idling with AC on I can hear the AC compressor kicking on for under 3 seconds.

If the AC in a car only works when driving it could be due to a problem with the condenser fan. The ACs cooling capacity has two limiting factors when it idles low RPMs and reduced airflow. This is to prevent damage to the compressor and the components.

Beyond thatvisit an independent AC repair shop and have your AC system checked out. Bad or Failing Fan Clutch. For the AC system to work properly it needs this pressure and a specific amount of.

Driving down the road it works and gets nice and cold. This is very common.

5 Main Causes Of Ac Only Works When Driving Drivingpress