How to Fix an AC That Stops Blowing When Accelerating

The AC will stop blowing when the vehicle accelerates.

Ac Stops Blowing When Accelerating

Some automobiles experience an issue with the AC fan not blowing while accelerating. It can be an alarming situation–reducing visibility, impairing comfort, and reducing cooling of the interior. Fortunately, this problem can usually be solved relatively easily and quickly. The cause of this issue is likely either a malfunctioning or stuck blower motor or a faulty connection to the control switch that operates the motor. Replacing or repairing these components should resolve the problem, allowing for full AC enjoyment in your car once again.

Systems Affected by the Problem

When the air conditioning system stops blowing when accelerating, there are two main systems that are affected: the engine management system and the air conditioning system. The engine management system is responsible for controlling the performance of the car, while the air conditioning system is responsible for providing cool air to the passengers.

Cause of the Problem

The cause of this problem is usually one of two things: a faulty blower regulator resistor or clogged cabin filters. The blower regulator resistor is responsible for controlling the speed at which air is pushed through the vents. If it malfunctions, it can cause weak airflow or poor acceleration response. Clogged cabin filters can also prevent adequate airflow from entering your car.

Common Symptoms of the Problem

The most common symptom of this issue is a weak airflow through your vents when accelerating. You may also experience a poor acceleration response due to reduced airflow from your vents.

Diagnose the Problem

To diagnose this issue, you should first listen for any noise coming from your blower regulator resistor. If you hear a loud buzzing sound coming from it, then that could be an indication that it has malfunctioned and needs to be replaced. Additionally, you should check your cabin filters and blower regulator resistor to ensure they are not clogged or damaged in any way.

Troubleshooting Tips to Fix the Issue

Once you have identified either a faulty blower regulator resistor or clogged cabin filters as being responsible for this issue, you should take steps to fix them. To replace a faulty blower regulator resistor, you will need to disconnect it from its power source and then replace it with a new one. If your cabin filters are clogged, then you will need to clean them out and replace them with new ones if necessary.

Important Safety Tips

When working on car parts, it is important to take safety precautions. Make sure that you always wear safety glasses and gloves to protect your eyes and hands. It is also important to disconnect the battery prior to beginning any work on the car parts. This will help ensure that no electric shock occurs while you are working on the car.

Replacement Parts Available for AC Blowing Issue

If your AC stops blowing when accelerating, there are a few different replacement parts available that can help fix this issue. The first is a blower regulator resistor. This part helps regulate the amount of power sent to the blower motor, which can help prevent it from stopping unexpectedly when accelerating. Additionally, cabin filters can also be replaced if needed as they can become clogged over time and reduce air flow through the system.

Cost of Replacement Parts

The cost of replacement parts for an AC blowing issue depends on what type of part you need to replace. The blower regulator resistor tends to be more expensive than cabin filters as they are more complex in design. However, both parts tend to be relatively affordable and can be purchased at most automotive stores or online websites like Amazon or eBay.

Installation Guide

If you decide to replace either the blower regulator resistor or cabin filters yourself, there are some installation guides available online that can help walk you through the process step-by-step. Replacing a blower regulator resistor typically involves removing some panels from inside the car and then unplugging the old unit before plugging in the new one and reassembling everything back together again. Replacing cabin filters is usually much simpler and just involves removing them from their housing and replacing them with new ones before putting everything back together again.

FAQ & Answers

Q: What are the systems affected by an AC issue when accelerating?
A: The engine management system and air conditioning system are both affected by an AC issue when accelerating.

Q: What causes an AC issue to occur when accelerating?
A: The most common cause of an AC issue when accelerating is a faulty blower regulator resistor or clogged cabin filters.

Q: What are the common symptoms of this issue?
A: Common symptoms of this issue include weak airflow through vents and poor acceleration response.

Q: What is the best way to diagnose the problem?
A: To diagnose the problem, you should listen for faulty blower regulator resistor noise and check cabin filters and blower regulator resistors.

Q: What safety tips should be followed when working on car parts related to this issue?
A: It is important to wear safety glasses and gloves at all times when working on car parts related to this issue in addition to disconnecting the battery prior to any work being done.

The most likely cause of an AC not blowing when accelerating is a problem with the blower motor or the fan speed control. If this issue is left unresolved, it can result in a decrease in fuel economy and increased wear and tear on the engine. To resolve this issue, it is recommended that you have a professional inspect and replace any malfunctioning components.