car ac not cold when driving

February 10, 2022

Check your car manual for changing air filter instructions. Its important to know that many times the cooling fan is shared by the radiator and condenser other times there are TWO separate ones.

Air Conditioner Only Works When Driving What Could Be Wrong

You might also have a low state of refrigerant charge.

. There was actually no frion in the system beforehand. If the fans dont come on the circumstance you have could occur. The compressor needs a lot of power and energy to work fully functioning.

Reasons Why A Car AC Is Not Blowing Cold Air Electrical Problems. Poor maintenance is the main culprit for car ac not blowing cold air when idle. Whats wrong with your car.

The condenser will run only slightly warm and the evaporator only slightly cool until the condition is corrected by topping off the refrigerant. Typically an iced over evaporator is the culprit. Low levels of Freon Make sure that the Freon level on the compressor is within acceptable levels.

The AC is blowing cold now and there is no more hissing noisebut it only blows cold when the engine is at about 2k rpm. The shop I took it to told me that they found a minor leak the compressor is likely going bad and quoted me 1400 on. If your car AC blows cold then warm the cause can be a low system charge moisture in the system a malfunctioning expansion valve clogged evaporator fins or an overcharge condition.

Be aware the law may require you to repair the system instead of just topping it off. WTF Start driving temp goes down and it starts working again. To maintain airflow when the car is in stop and go traffic or is completely stopped condenser fans will come on automatically.

Heres how to nail down the cause. A low refrigerant level is the most prevalent reason for inadequate AC cooling. Intermittent cooling is often caused by the components of your vehicles AC system freezing up.

One reason why your AC in car is not cold is that your filter is clogged. Your air filter may be clogged with dust and dirt. Any electrical problem resulting in your AC not blowing cool air might be as straightforward as a.

Top 10 Reasons that your Car AC isnt Cooling Enough. You should check the system from time to time and keep an eye on some components that can cause the problem. At higher speeds airflow takes care of that and the fan is useless.

Answer 1 of 5. Causes of No Cooling During Idle and How to Solve Them 1. Lack of condenser air flow The first culprit of your car air-conditioning not giving off cold air when the car idling.

One of the most common causes of the symptom youre describing is when you have a bad or failing AC high pressure hose. Should I just not stop at stop signs and red lights. When Its idle the car temp gauge starts increasing and the AC goes out fan still blows just not cold.

In this condition the compressor may cut out on low pressure cutoff depending on the actual remaining pressure. I got the car properly recharged vacuumed out and put frion in. If you know how.

Some that come to mind. If the compressor gets weak or worn out by constant usage then there is a noticeable lack of energy in compressor which leads to AC malfunctioning. Replacing your air filter can be done quite easily and is inexpensive.

This post was edited on 511 at 114 pm Back to top Reply Replies 29 MGP LSU Fan Louisiana Member since May 2014 328 posts. The cooling section of car ac works just like a refrigerator. Youll usually be able to tell if it is dirty if you smell a dusty odor emitting from your AC.

That probably explains why everything works well when youre going faster. 7 Days a Week. 3 Fix the fan.

Low car AC charge causes evaporator freeze up and low airflow. The most common reason is the cooling fan for the condenser is not working. If the fan is not turning on it could be a few things.

Damaged Compressor Belt. Ad Have Auto Mechanics Come to You. There are several reasons why a cars AC may not cool when at a stop and blows cool only when moving.

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. At low speeds the fan pulls air through the radiator and AC condensor and cools things off. 7 Days a Week.

1 Year12K Mile Warranty. 4 Reasons Why the Car AC Not Blowing Cold Air When Idle. An evaporator covered in ice cant cool the air so you would have to wait until the ice melts which is why the cold air eventually returns.

An evaporator coil in the cabin air system takes heat from the incoming air and the resultant gas is compressed by the. I presume you mean when the car is in motion rather than only when I am in the driving seat.

Why Does My Car Air Conditioner Blow Cold Then Warm Firestone Complete Auto Care