Car Ac Starts to Blow Warm Then Spraying Water on Condenser Makes It Cold Again
It's bloody hot in the summertime, and it's encarmine frustrating when yous turn on the Air conditioning and wait to be rescued past a draft of cool air but instead get null. Auto air conditioner not blowing cold air when idling is a pretty common issue related to your vehicle's AC unit of measurement. There are many reasons why you might observe the AC merely works when driving but doesn't blow cold air during idle. Read on to learn the well-nigh mutual reasons as well equally how to prepare the problem in each case.
Car Air-conditioning Nuts
Before diving into the possible culprit that can cause car air conditioner not blowing common cold air when idling, you should grasp the basics of how your car's air conditioning unit works . This volition make troubleshooting and fixing the trouble more self-explanatory.
The air conditioning system in your car requires a refrigerant for operation and consists of the compressor, condenser, evaporator, orifice tube, and an accumulator. The compressor compresses the refrigerant into a liquid. As the gas gets compressed, it heats up, and the high pressure forces the refrigerant to travel through the organization to the condenser.
The condenser features a department of coils that the absurd air from outside passes over, thus transferring the oestrus from the compressed gas to the air.
The refrigerant then goes through the dryer to become rid of contaminants. Once purified, the compressed refrigerant passes through the expansion valve, where it is stripped of its pressure. Subsequently traveling through the evaporator, the refrigerant is now super clean, dry out and cold.
To create the gusts of cold air bravado out of your car'south Ac, air is sent through this newly cold refrigerant in the compressor tank to cool downwardly so blown out through the blowers.
Car AC not Blowing Common cold Air When Idle: The Reasons
The trouble occurs at most cars at some signal in their lifetime. Poor maintenance of the ac unit is the main culprit for car air conditioner not blowing common cold air when idling . Checking the system from fourth dimension to time is crucial to keep it in a good condition. Permit's meet what could exist the probable reasons for car AC non blowing cold air when idle .
ane. A Faulty condenser fan
The cooling fan in the condenser is the outset affair that you should expect into while finding out the reasons for machine air conditioner non blowing cold air when idling. If the fan is damaged or cannot run with its total force, it cannot cool down the rut coming from the Freon (refrigerant) through the condenser.
When the motorcar runs at a high speed, the condenser does not require the fan for cooling the Freon because of sufficient air passing through it. Only, when the car is not moving, the fan is the simply tool for making the Freon cold.
You lot should check if the fan's connections are loose or it does not properly sit in its slot, or if there's any damage that would impede its performance.
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two. Low Freon level
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The Freon gets used up with the running of the air conditioning. When its level goes lower than the acceptable level, you volition face the event of car air conditioner not blowing cold air when idling. The compressor can pump the Freon more easily when the car is running at a high speed on the highway simply it struggles when the machine sits idle. You can exercise the refill yourself if you lot know the process.
Another sign of low Freon level is if yous don't hear the clutch engaging the moment you turn your vehicle's AC on. The clutch allows the compressor to pressurize the freon and works past reading freon levels. If information technology doesn't actuate, the reason would be there's not plenty freon.
Leakages
One possible reason for low Freon level is a leak in the AC condenser. The condenser seals and tubes are prone to normal wearable and tear; they tin can crack or pause. Another possibility is damages from physical touch by road debris or rocks, equally the condenser is located near the front of a auto. A leak in the condenser can pb to a depression refrigerant charge and thus poor AC operation, since the system relies on the refrigerant for operations.
You normally won't exist able to observe condenser leaks past optics. If y'all look very, very closely, all you're likely to run across is a faint outline of refrigerant oil. Sometimes, for older cars, a trace dye that is bright green in colour is added to the A/C organisation for easily detecting condenser leaks (your vehicle operates on many fluids, each has a singled-out colour, so don't mistake them).
If the condenser is leaking excessively, you'll need to supercede the entire condenser equally it's not possible to replace cracked or broken seals or tubes. In this case, you'll likely demand a professional person to notice and repair the leak and restore the refrigerant to the right level.
Detecting Leaks
Leaks nearly commonly occur in worn O-rings, seals and hoses of the air-conditioning system, followed by leaks in a pinhole of the condenser and evaporator, and leaks in the compressor shaft seal.
To detect leaks, add refrigerant to restore it to the correct level, then turn the Air-conditioning on. The most simple merely effective method is to spray soapy water to suspected areas and watch for bubbles.
If a leak occurs in the O-rings, seals or hoses, only have them replaced will solve the problem. However, if the issue lies with a leaking condenser or evaporator or the compressor shaft seal, repair is expensive and more troublesome, which should be performed by a professional.
iii. Chock-full Condenser
If any foreign object or debris gets into the condenser and obstructs the fins, the cooling process won't work properly, particularly when the car is idle.
Condensers are discipline to clogs over time due to the buildup of residual in the refrigerant, which eventually turns into a sticky paste that hinders the estrus transfer that can take place from the hot refrigerant to the cool ambient air that gets blown over the condenser coil.
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The second cause for a condenser malfunctioning is a blockage caused by droppings. This is typically due to a worn compressor that is breaking apart and dispersing metallic internal parts throughout the unabridged system. This means that if you're dealing with a blockage, you might need to replace not just the condenser, only also the failing compressor, the tubes, and the receiver/dryer or accumulator, since metallic droppings has contaminated the whole system.
A blocked condenser might too crusade a trouble called short-cycling, which makes the A/C unit of measurement cycle on and off rapidly and ineffectively instead of optimal performance. This abnormal cycling volition crusade more than wear and tear on all components, thus y'all might have to supplant many parts at the same time or replace the whole A/C unit prematurely.
In this instance, you merely need to clean the dirty parts to resolve the problem of Ac non blowing common cold air :
- A muddied or chock-full condenser: If your condenser is chock-full with dirt or anything that's interfering with the unit of measurement, but give it a thorough cleaning to restore the unit's optimal performance.
- Dirty gyre: The curlicue is the office that the cool ambient air gets blown over, so over time, it is also prone to collecting dust and other contaminants in the air. You only have to clean off debris from the roll to restore the condenser's capability.
four. Faulty or Worn Condenser Parts
The condenser itself consists of multiple parts: the coil, the motor, the fins, the condenser relay switch, the run capacitor, plus tubes and seals. If these parts get muddied or become worn with one-time age, your condenser might lose its function. Sometimes you can clean or replace the faulty role itself, sometimes you'll need to replace the whole condenser or the entire A/C unit of measurement. When to repair and when to replace your faulty condenser will be discussed further beneath.
If you're lucky, you can just supercede certain faulty components as follows:
- Faulty Motor: A faulty motor needs to exist replaced. But note that y'all must bank check your owner'south manual for the correct replacement motor to avoid causing even more harm to your air conditioning unit.
- Bad condenser relay switch: easy replacement
- Bad run capacitor: easy replacement
Sometimes, you're less lucky. If you're dealing with the following issues, yous'll need to replace the entire condenser itself, or worse, the entire air conditioning unit:
- Condenser blockages: As mentioned above, a blockage acquired by metallic droppings from a failing compressor is a major issue and almost of the time, y'all may have to supercede more than the condenser itself or worse, replace the whole air workout unit of measurement.
- Damaged curl: A damaged whorl is very hard, expensive and time consuming to repair, unless your coil is yet under warranty. Otherwise, people usually replace the unabridged air conditioning unit, which is quicker and cheaper.
Condenser replacement cost
You might wonder how much replacement costs for an AC condenser. The average price for an Ac compressor replacement is between $400 and $900 depending on the particular car. About one-half of this would be labor costs and the remaining is the price of the parts.
5. Overheated engine
Another mutual reason for auto air conditioner not blowing cold air when idling is an overheated engine . Near cars take 2 cooling fans, 1 for the condenser and the other for the radiator. The compressor of the Ac system moves heat from the radiator to the condenser. When the motorcar is already overheated and the fans in the radiator and condenser are non working properly for some reason, the arrangement tin can't cool down the heat with the maximum efficiency.
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Source: https://carfromjapan.com/article/car-maintenance/car-air-conditioner-not-blowing-cold-air-when-idling/
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