Hello Peter, Please my aircondition sometimes comes on and sometimes does not work at all.
Hello Peter,
Please my car AC sometimes work and some other times to it does not work at all. During that you will notice that the compressor thus shot at all.
My car has an automatic transmission.
Please my car AC sometimes work and some other times to it does not work at all. During that you will notice that the compressor thus shot at all.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
There are quite a few possible causes. For example, if the system has previously been opened, it is possible that the dryer is saturated and you could have a situation with the expansion (metering) valve intermittently freezing and thawing. If the system has not been worked on (never opened), a slow leak could have resulted in the refrigerant level being too low. The compressor clutch might be shutting off prematurely due to an electrical fault. There could be other electrical issues such as a faulty switch or faulty high and low pressure cut off switches. All these possibilities, and more, would be considered in an air conditioning system inspection and if you request that inspection the responding certified mechanic will get this resolved for you. Once your system is diagnosed, the mechanic will explain the repair strategy to get the A/C fully functioning and he or she will estimate the cost of the required repair. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
AC Works Intermittently: When the air goes from cool to warm to cool again, you`re experiencing intermittent problems. This is often due to a clog in the system, a failed compressor or compressor clutch, a faulty condenser fan, a clog in the system, or the actuator directing airflow has failed.
If your air conditioner only stays on for a few minutes at a time and shuts off before it has a chance to cool your home, this is called short-cycling. The issue is relativity common and can have a range of causes, from a clogged air filter to an oversized system.
Your car`s AC stopped working most likely because of a freon leak or a bad compressor. Though these causes are the simple to spot reasons for your AC not working inside your car, it might be anything as simple as a dirty cabin filter or a bad belt.
The most common reasons a Hyundai Sonata ac isn`t working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. You may not realize there`s a refrigerant leak until the air conditioner stops blowing cold.
Some of the most common reasons a central air system stops working include: coolant has run too low, the air filters are blocked or dirty, the coils are frozen over, or there is an electrical issue. To help you troubleshoot what exactly is wrong with your central AC, we`ve detailed the most common issues below.
The easiest explanation for your AC not turning on is a thermostat problem. Check to ensure your thermostat is on, set to “cool,” and that the temperature is set to a few degrees cooler than the normal ambient temperature of your home. You may also need to replace the batteries.
Your air conditioner may be short cycling because it is repeatedly starting up then overheating (and shutting down) due to a bad compressor, dirty filters, dirty coils, low refrigerant, or frozen coils. An overcharged system will cause liquid Freon to get into your compressor and cause it to malfunction.
Poor airflow
If something blocks the flow of air, your AC needs to go into overdrive to make up for it, which could result in it overheating. And when your AC overheats, it shuts off to give the system a chance to cool down. Once cool, it turns back on again, and the vicious cycle of short cycling continues.
Common Reasons AC Doesn`t Run Cold
The most common causes of broken air conditioning leaks or compression issues. If you are feeling cool — but not cold — air, the issue could be a clogged filter, a problem with the cooling fan, signs of radiator trouble, or it could simply mean it`s time to recharge your AC.
The cooling fan may be broken due to debris accumulation, a faulty cooling fan temperature switch, blown fuses, or electrical issues. You will need to have your Hyundai checked in such instances. A qualified mechanic can inspect wiring and connectors and test the cooling fan motor.
Look for it first around on the exterior of your machine, especially along the bottom edge near the ground. An AC`s reset button is typically red and visible, so it should be easy to spot. If you don`t see a reset button on the outside, it could be located inside the unit behind the service panel.
There are several things that can cause electrical problems for your car`s air conditioning. These can include failed switches, a blown fuse, a problem with the control module or something else. Fuses can short out and make the A/C stop working or a loose connection can create an electrical short that is easily fixed.
Check your air filter: A clogged air filter causes all kinds of problems for your HVAC system, including short cycling. If your filter is caked with dust and debris, replace it with a new one to prevent additional stress on your home`s system.
If your AC unit keeps turning on and off repeatedly, then it`s probably experiencing short cycling. Short cycling generally refers to a condition where the AC system`s cooling cycle stops prematurely and turns on again after a short while, like every 5-10 minutes depending on the system`s condition.
A common reason for a short cycling AC system is electrical problems. This may be caused by a bad connection, a broken thermostat, a faulty circuit board, a condenser or compressor not receiving power properly. To properly diagnose and repair the electrical issue, call a licensed HVAC contractor.
Check to see that the cooling fans on the condenser or radiator are running when the air –conditioning is on. Look for any restrictions like leaves, bugs or dirt that would keep air from passing over the condenser. Check the cabin air filter to ensure that it is not clogged.
Overheating is one of the main reasons why compressors fail, and it is usually caused by not enough refrigerant in the system.
The short answer is that your AC compressor and refrigerant should last about 12-15 years. Learning what crucial components, and how to maintain the compressor, can keep your AC running efficiently for its entire lifespan.
Simply stated, the automatic restart feature ensures periodic air conditioner operation to maintain humidity at a comfortable level, even though the room temperature may not have risen enough to cycle the unit back on. Thus there will never be more than an 8 minute “off” time.
As mentioned, one of the more common reasons for an AC unit needing a reset is due to the protection circuit breaker inside the unit kicking in. This usually happens after a power outage occurs, and this failsafe is in place to prevent fires and explosions from occurring from a power surge.
When a thermostat is in recovery mode, this simply means it is recovering from being in an energy-saving mode. During recovery mode, your thermostat is working toward achieving a newer temperature that is cooler or warmer than the outside air.
Reset the Thermostat
Common methods for resetting a thermostat include installing the battery backward for five seconds, pushing a recessed reset button with a pin or paper clip, or shutting off the breaker to the thermostat for 30 seconds.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Hello Peter, Please my aircondition sometimes comes on and sometimes does not work at all.
ANSWER : There are quite a few possible causes. For example, if the system has previously been opened, it is possible that the dryer is saturated and you could have a situation with the expansion (metering) valve intermittently freezing and thawing. If the system has not been worked on (never opened), a slow leak could have resulted in the refrigerant level being too low. The compressor clutch might be shutting off prematurely due to an electrical fault. There could be other electrical issues such as a faulty switch or faulty high and low pressure cut off switches. All these possibilities, and more, would be considered in an air conditioning system inspection and if you request that inspection the responding certified mechanic will get this resolved for you. Once your system is diagnosed, the mechanic will explain the repair strategy to get the A/C fully functioning and he or she will estimate the cost of the required repair. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
My turbo will sometimes work and sometimes will not work.
ANSWER : Hi there. The wastegate actuator is not functioning correctly or the boost sensor is not working making the turbo boost properly. Check the wastegate actuator hose and see if its broken and listen for leaks when you drive the vehicle. If there is no boost pressure, then the wastegate is releasing all of the boost. If the wastegate is moving and opening the wastegate, then the turbo could be damaged and not rotating. With the engine off, remove the intake hose to the turbo and see if the shaft on the turbo spins. If the shaft does not turn, then the turbo would need to be replaced. If the vehicle was driving on the highway for a while and then shut down without idling the engine for 1 minute, then the bearings on the turbo will seize up due to a hot shut down. If the turbo is shaft is spinning and the wastegate is functional, then the boost pressure sensor is not working causing the actuator to not function. If you need further assistance with turbo not working, then seek out a professional, such as one from Your Mechanic, to help you.
Car starting sometimes, sometimes have to jump, speedometer and tach working but all other gauges not working 2003 GMC Yukon
ANSWER : Hi there – check fuses first, but it sounds like you might have a problem with your digital dash, and possibly a wiring issue that is draining your battery overnight. The lack of gauge function is is a high failure rate circuit board issue, but there are rebuilder service companies out there that specialize in this work. The battery drain issue maybe be a different problem, but can be tracked down as well. This problem can be diagnosed by connecting an ammeter to the positive (red) battery cable, observe the current drain (likely less than 1 amp), then, one at a time, remove each fuse, check to see if the current drain has dropped to near 0, then reinsert the fuse. This process should identify the faulty circuit in most cases. The specific components on that circuit can then be checked for current drain problems. A professional mechanic, like YourMechanic, can come to your location, and perform this procedure for you, and replace/repair the failing component.
Loses power when reaches a certain speed limit sometimes it works sometimes it doesn’t when it works cruise control works
ANSWER : Hey there. This may likely be related to a bad O2 sensor. As you may know, the O2 sensor monitors the oxygen content of the exhaust gases as they leave the catalytic converter to determine how much additional fuel to add or subtract to the air/fuel mixture. When this sensor is not working properly, you may experience poor running conditions as a result of the car being over or under fueled depending on the circumstances. This may cause the car to starve for fuel or be flooded with too much fuel. I would recommend having an expert from YourMechanic come to your home to take a look at your car to properly diagnose the loss of power and move forward with repairs.
My dash board don’t work my front light work when I change my light into high beam and my back window won’t go down
ANSWER : As unfortunate as it is, your vehicle would be considered flood damaged. Diagnosing electrical problems in a flood damaged vehicle is nearly impossible. This would take many hours or even days to determine which wiring harnesses and circuits have been affected. Then nearly all of the wiring under the dash would likely require replacement as well as many sensors and switches. On a BMW vehicle, the amount of wires and switches are likely more than that of a lower end vehicle. Due to the inefficiency in cost, you would likely be able to purchase another BMW like yours for less than what it would cost to fix your car. Many insurance companies would consider this type of damage to total out the vehicle unfortuantely.
Horn on 2003 Kia Sorrento ex will only blow sometimes & dash light will only work sometimes.
ANSWER : There are three different things going on with your vehicle. There is a loose ground wire to the dashboard lights to the frame, a clock spring in the horn maybe broken or damaged, and the multi-function switch has failed causing the headlight indicator to not work. Check all of the wiring in the steering column and the horn clock spring. Look under the dash for any loose or unplugged wires. If you need further assistance with your electrical issues, then seek out a professional, such as one from Your Mechanic, to help you.
Windshield wipers stopped working. They’ll suddenly stop working then suddenly start working again. Has been happening for a week.
ANSWER : The problem you are describing likely stems from an intermittent electrical fault in the wiper circuit. The windshield wiper system uses a small electric motor to move the wiper arms that you see on the windshield. That electric motor is controlled through a switch, relay, fuse, and wiring. One, or more, of those electrical components has failed although it is also possible that the mechanical arms are binding (seized, if the lubricant has dried out) thus causing the electric circuit to the motor to overload. Regardless of the underlying fault, if you request a non functioning wiper diagnostic/repair, the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Gas gauge isn’t working. Sometimes the speedometer and the temperature gauge doesn’t work. Limited lights around gauges and radio.
ANSWER : Hi there. The dashboard lights are burned out in the dash and the dimmer switch could be worn causing the lights to be weak. The gauges that seldom fail to work is most likely a loose wire in the dash panel. The fuel gauge that is not going to E when shutting off the car has a damaged rheostat within the sending unit. The sending unit is in the fuel tank attached to the fuel pump. If you need further assistance with your gauges not working, then seek out a professional, such as one from Your Mechanic, to help you.
