Why Does My AC Stop Blowing When I Accelerate? Exploring the Causes and Solutions

AvatarByCarl Frisch

When your air conditioning (AC) system stops blowing air when you accelerate, it could be caused by a number of factors. The most likely cause is a faulty blower motor resistor or a clogged cabin air filter. A faulty blower motor resistor will cause the AC fan to run at one speed regardless of the AC setting, while a clogged cabin air filter will reduce airflow through the AC system and can cause it to shut off when accelerating. Other potential causes include low levels of refrigerant, a broken or disconnected electrical connection, or a faulty control module. Having your AC system inspected by an experienced mechanic can help identify the exact cause of the issue and ensure that it is repaired properly.

Common Reasons Why Your AC Stops Blowing When You Accelerate



When your car’s air conditioning system stops blowing when you accelerate, it could be due to a number of reasons. Electrical issues, temperature sensor malfunctions and blower motor issues are some of the most common causes. Temperature sensors are used to monitor the temperature inside the car and can malfunction if they become clogged or dirty. Blower motors can also fail due to wear and tear, or because of debris and dirt clogging the motor itself.

Troubleshooting Your AC System When It Stops Blowing When You Accelerate



If you are experiencing a problem with your air conditioning system not blowing when you accelerate, it is important to troubleshoot the issue before attempting any repairs. Start by checking the cooling system pressure – this will tell you if there is a leak in the system that could be causing your problem. You should also check all electrical connections to make sure they are secure and not corroded or damaged in any way. Finally, testing any components associated with the blower motor is essential – this includes checking for worn or damaged parts that could be affecting its performance.

How to Fix Your AC System When It Stops Blowing When You Accelerate



Once you’ve identified which component is causing your air conditioning system to stop blowing when you accelerate, it’s time to repair or replace it. If it is a faulty temperature sensor that needs replacing, make sure that you get a suitable replacement part for your vehicle model. Similarly, if it is a failing blower motor resistor or blower motor assembly that needs attention, make sure that you get quality parts from an authorized dealer so as not to compromise on safety and performance standards.

Tips for Maintenance and Prevention of AC Problems When You Accelerate



In order to ensure that your air conditioning system works properly without having to experience any issues when accelerating, there are some simple maintenance tips you can follow. Firstly, regularly clean out your condenser unit as this will help prevent debris from clogging up the internal mechanisms of your air conditioner. Secondly, check refrigerant levels regularly as low levels can cause problems with cooling efficiency and cause components such as fans and pumps to work harder than normal in order for them to operate effectively. And finally, replace worn or damaged parts in good time as this will reduce the likelihood of further damage being caused due to an accumulation of dirt or debris which can cause components such as fans and pumps to overheat and malfunction.

Different Types of Temperature Sensors Used in Automotive AC Systems



When troubleshooting an issue with your air conditioning system stopping blowing when you accelerate, it is important to determine which type of temperature sensor is being used in order for repairs and maintenance procedures to be undertaken correctly. The three main types of temperature sensors used in automotive systems include variable resistors (VRs), thermistors and optical sensors (such as infrared). Variable resistors use electrical resistance values along a metal strip which changes depending on external temperatures; thermistors use semiconductor materials whose resistance changes according to temperature; whereas optical sensors use light waves which reflect off surfaces depending on their temperatures – all giving very accurate readings despite their differences in size and design characteristics.

Why Does My AC Stop Blowing When I Accelerate?


Driving a car with the air conditioner on is a great way to stay cool on those hot summer days. But what happens when you start to accelerate and your AC suddenly stops working? This common issue can be caused by several different factors, and understanding what’s causing the problem can help you get your car’s air conditioning back up and running.

Signs That Your Car’s Temperature Sensor May Be Malfunctioning


The temperature sensor in your car helps regulate the air conditioning system, so it’s important that it’s functioning properly. If it’s not working correctly, then your AC may not be able to keep up with the increased temperature when you accelerate. Common signs that your car’s temperature sensor may be malfunctioning include refrigerant leaks, poor coolant flow, and an air conditioner that isn’t working properly.

Causes of AC Blower Motor Failure in Automobiles


The blower motor is responsible for circulating air from the air conditioner into the vehicle. If this motor fails, then your AC won’t be able to blow cool air into the cabin when you accelerate. Common causes of blower motor failure include dirty or clogged filters, a failed capacitor, or a faulty relay or resistor.

Indications That Your Car’s Blower Motor May Be Failing



If you suspect that your blower motor may be failing, then there are several signs you can look out for including unusual noises from the fan, intermittent airflow, and weak airflow from vents.

Benefits of Regular Maintenance for Automotive Air Conditioners



Regular maintenance is essential for ensuring that your air conditioner is functioning properly and efficiently at all times. Some of the benefits of regular maintenance include improved fuel efficiency, reduced wear and tear on parts, and improved performance and reliability.

Safety Measures to Take for Automotive Air Conditioner Repairs



When attempting repairs on an automotive air conditioner, it’s important to take certain safety measures such as wearing safety gear and disconnecting electrical power before working. Additionally, old refrigerants should always be disposed of safely according to local regulations.

If you suspect there may be an issue with your car’s temperature sensor or blower motor that causes your AC to stop blowing when you accelerate, then contact a certified mechanic as soon as possible for help diagnosing and resolving the problem. With their expertise they will be able to get your car back on the road with cool air blowing again in no time!

FAQ & Answers



Q: What are common reasons why my AC stops blowing when I accelerate?
A: Common reasons why an automobile’s air conditioning (AC) system can stop blowing when you accelerate include electrical issues, temperature sensor malfunction, and blower motor issues.

Q: How do I troubleshoot my AC system if it stops blowing when I accelerate?
A: To troubleshoot your AC system if it stops blowing when you accelerate, you should check the cooling system pressure, examine electrical connections, and test the blower motor components.

Q: How do I fix my AC system if it stops blowing when I accelerate?
A: To fix your AC system if it stops blowing when you accelerate, you will need to replace a faulty temperature sensor, replace a failing blower motor resistor, or repair or replace the blower motor assembly.

Q: What types of temperature sensors are used in automotive AC systems?
A: Different types of temperature sensors used in automotive air conditioning (AC) systems include variable resistors, thermistors, and optical sensors.

Q: What are some signs that a car’s temperature sensor may be malfunctioning?
A: Signs that a car’s temperature sensor may be malfunctioning include refrigerant leaks, poor coolant flow, and air conditioner not working properly.

In conclusion, the reason why your car’s air conditioning stops blowing when you accelerate is most likely due to a lack of airflow through the system. This could be caused by a clogged or dirty air filter, a faulty blower motor, or an obstructed ventilation system. If you’re having this issue, it’s important to have your car inspected by a qualified mechanic to determine the exact cause and necessary repairs.

Author Profile

Carl Frisch
Carl Frisch
With more than 30 years in the bicycle industry, I have a strong background in bicycle retailing, sales, marketing and customer service. I have a passion for cycling and a dedication to excellence. As a manager, I worked diligently to increase my capabilities and responsibilities, managing up to eleven mechanics (at Palo Alto Bicycles) and later as a working partner in my own store.

As the shop owner of Spoke n’ Word Cycles in Socorro, NM, the success of the mission was my responsibility, which I pursued passionately since we opened in 2003 through the spring of 2011. I am adept at managing owned and loan inventory, preparing weekly & annual inventory statements, and managing staff. The role as managing partner also allowed me tremendous freedom. I used this personal freedom to become more deeply involved in my own advancement as a mechanic, to spearhead local trail building, and advocating for cycling both locally and regionally.

As a mechanic, I have several years doing neutral support, experience as a team mechanic, and experience supporting local rides, races, club events. I consistently strive to ensure that bicycles function flawlessly by foreseeing issues and working with the riders, soigners, coaches and other mechanics. Even with decades of experience as a shop mechanic and team mechanic, and continue to pursue greater involvement in this sport as a US Pro Mechanic, and UCI Pro Mechanic.

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