everytime I turn my car on the ac starts to blow air even if I switch it off. it won’t blow cold air or heat.
Everytime I turn on my car the air starts to blow even if I switch it off it'll keep blowing air. It won't blow cold or heat and I can hear and/or feel the air blowing at my feet when I sit on the passenger side. I turn the switch on the a/c to try to intensify the strength of the air, but it doesn't do nothing. The a/c turns off once I turn off my car though.
My car has 155254 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there. Based on your question and input, it looks like your AC control switches are damaged, causing the vents to activate even if the switch is not activated. This is sometimes an electrical problem, as it could be triggered by a damaged electrical relay. You might want to have a professional mechanic complete an AC is not working inspection, so they can determine what is causing this issue you’re experiencing and recommend the right repair.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
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 most common reasons a Dodge Grand Caravan 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.
Here are some of the most common causes of why air doesn`t flow out of your vehicle`s vents: Your air intake is clogged, meaning that air isn`t getting in from the outside at all or isn`t circulating properly. There is a blown fuse in the ventilation system. Electrical issues such as a bad relay.
Condenser fan issue
If the condenser fan is not functional, it can`t cool your car. As a result, when the car is not moving, the lack of air movement will stop the fan, and consequently the AC.
First, check your filters and coils for dirt and debris that may be impeding airflow. Once you`ve cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn`t blow cold air, it could be that refrigerant levels are too low.
If the compressor clutch engages and turns the compressor, but the A/C still does not blow cold air, the system is probably low on refrigerant and needs to be recharged.
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 you find yourself idling without proper cooling after a particularly windy day, it could indicate damage to the air conditioning system. A halt in cooling while idling can possibly be due to a blown fuse or broken fans caused by the debris strike.
Change The Cabin Air Filter
A dirty air filter can certainly impede your air conditioner`s ability to cool and after time could cause unnecessary strain on the entire system.
Believe it or not, your cabin filter can affect your AC system, and the AC can have a strong impact on the power of the entire vehicle. If your filter is clogged, then you might have to turn up the AC. The harder your AC works, the more the engine does, too.
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.
Press the STEP button located on the steering wheel toscroll through sub menus (i.e., Trip Functions: AVG FuelEconomy, DTE, Elapsed Time, and Units). To reset the display shown, turn the ignition switch to theON position, then press and hold the RESET button forapproximately two seconds.
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.
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.
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.
If the compressor is turning on and off fairly quickly then that means that there is still a pressure issue. It can be caused by low refrigerant or high pressure. It can also be caused by a bad A/C pressure switch. Any of these will cause this to occur.
So if you turn on your AC and hear a rattle, it may mean you have a failing or bad: AC compressor. Rattling or your car air conditioner making loud humming noises which get worse as you accelerate can both be signs you need to replace your AC compressor.
The power steering pump uses engine power provided by the drive belts to assist with steering. If the pump is causing extra strain the system, your engine will inevitably take on the extra load. This is why when you are turning, the engine feels like its losing power.
Usually it means you are low on refrigerant, just a bit. The compressor is usually on a belt takeoff from the engine so it works better at higher engine RPM. If its not working at idle RPM of around 600–800 but works at engine cruising RPM of 1000 to 1500 or more, then you are probably a little low on refrigerant.
The short answer: You can get away with running your AC without a filter for a short period of time. However, doing so for longer than 6-8 hours can hurt your system and decrease your home`s indoor air quality.
There are a few reasons why an AC system could be blowing warm air, but one of the most common is due to a general thermostat error. Sometimes this “hard reset” of your AC can solve that problem.
Look to see if the coolant is swirling/flowing immediately — that means the thermostat`s stuck open. If the coolant doesn`t flow after 10 minutes or so and continues to be stagnant after the temperature gauge indicates it`s hot, the thermostat`s likely stuck closed.
Lack of Acceleration
A dirty air filter reduces the amount of clean air that is getting through to the engine, decreasing its power and performance. Replacing your dirty engine air filter with a new, clean one can improve the acceleration of your engine.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
everytime I turn my car on the ac starts to blow air even if I switch it off. it won’t blow cold air or heat.
ANSWER : Hi there. Based on your question and input, it looks like your AC control switches are damaged, causing the vents to activate even if the switch is not activated. This is sometimes an electrical problem, as it could be triggered by a damaged electrical relay. You might want to have a professional mechanic complete an AC is not working inspection, so they can determine what is causing this issue you’re experiencing and recommend the right repair.
Overheats When Blowing Warm With Heat & AC But Not When Blowing Cold AC
ANSWER : Hello, thank you for writing in. There are so many different codes being triggered, that it is unlikely all of these systems are having issues at once. We need to focus in on the fact the engine is overheating at all. You will want to check the level and condition of the coolant and the overflow tank. If the level is full then you may have an issue with the thermostat, radiator cap, or water pump. These can all be tested and changed relatively easily. If the main cooling system is okay, you will want to look into the heater core and climate control module. For more diagnostic help, contact our service department to schedule an appointment.
When I turn on my AC the radiator fans do not turn on. The fans do come on when the car warms up so I know they are working and the fuses are good. The AC compressor does come on and the air blows ice cold when the car is moving. Car is a 2006 Chrysler Sebring Sedan 2.7l v6.
ANSWER : The control circuit for the fans needs to be checked. For example, there is usually a condenser fan relay in the A/C electrical controls. There could be a fault with that relay and/or wiring problems, perhaps even just a loose connection, blown or loose fuse, and so forth. To resolve something like this, the recommended service is an electrical component diagnostic. If you request that diagnostic service, the responding certified mechanic will get the problem pinpointed and resolved. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Car won’t turn over. No lights come on when I turn it. Can’t even lock my doorsvor push the seat up or back.
ANSWER : Your probably correct, it sounds as though your battery is done. But it also sounds like you have charging system issues. I’m not sure that fixing your battery and charging system will solve the problem with the car shutting off, but it’s possible that it will and it’s a darned good place to start. By contacting Your Mechanic, you can have a technician come to your home or office to check out your car and help you figure out what to do next.
My car AC blows cold air when the car is moving but when I’m at a red right it starts blowing warm air.
ANSWER : 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. To maintain airflow when the car is in stop and go traffic, or is completely stopped, condenser fans will come on automatically. If the fans don’t come on, the circumstance you have could occur. You might also have a low state of refrigerant charge. Other possibilities are that the compressor clutch is not cycling as intended or that the condenser might be blocked or dirty. And, of course, you could have a combination of these issues. To get this resolved, the best thing to do is request an air conditioning system inspection. The responding certified mechanic will come to your location, pinpoint the fault and get this resolved for you. Once diagnosed, the mechanic will be in a position to give you a repair strategy to get the A/C system 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.
Car will blow cold air but will not blow heat
ANSWER : The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater core is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this warm coolant to heat the inside of the car with the help of the blower motor that blows the warm air through the vents inside the car. When the cooling system is not properly circulating coolant through the motor, this results in the warm coolant not being pumped through the heater core properly in order to warm the inside of the vehicle.
Engine overheating can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at specific temperature thresholds. When this switch is not working properly, this can cause the fans to come on intermittently, all the time or sometimes not at all. When this happens you will notice a temperature spike and drop occasionally as the fan comes on and off. When your thermostat is not working properly or is stuck closed, this will not allow the coolant to properly circulate through the engine, which may cause the engine temperature to fluctuate erratically or in some cases just remain hot. As mentioned above, this also restricts the warm coolant from flowing through the heater core which uses this to blow warm air into the cab of the vehicle. I would suggest having an expert from Your Mechanic come to your home to diagnose your cooling system.
My heat and air turns on without a problem but does not blow very hard (heat blows harder than air). Rattling noise.
ANSWER : The heater and the air conditioner both use the same blower motor. However, Nissan does have two separate fuses for the same unit. One of them can be blown. There are also resistors in the system that can fail. There are several electrical tests that can be done, but depending on the condition, it may be more practice to change the entire unit. Due to the age of your vehicle, and the Juke’s history of blower motor issues, it’s very likely a simple fuse issue. These can (for the most part) be visually inspected, and are cheap.
There was a temperature change in my car.
ANSWER : Hi there. The thermostat on the air conditioning is not functioning correctly. I recommend replacing the thermostat temperature scanner for your air conditioning system. The thermostat will determine when the blend doors are to activate and when the air conditioning clutch is to engage. If you need further assistance with your air conditioning system, then seek out a professional, such as one from Your Mechanic, to help you.
