It’s frustrating when your car heater only works while driving. You might be thinking, “Why is my car heater only working when I’m driving?” and “How can I fix my car heater?” You’re not alone. This is a common problem that many car owners experience. The good news is that it’s usually a simple fix.
The most likely culprit is a faulty blower motor resistor. This component regulates the speed of the blower motor, which is responsible for circulating hot air through the vents. When the resistor fails, the blower motor may only work at the highest speed, or not at all.
What are the Signs of a Faulty Blower Motor Resistor?
Here are some common signs that your blower motor resistor is failing:
- The heater only works at high speed: This is a classic symptom of a faulty blower motor resistor. The resistor is responsible for providing different levels of resistance to the blower motor, which controls its speed. When the resistor fails, the blower motor may only operate at the highest speed.
- The heater doesn’t work at all: If the blower motor resistor is completely burnt out, the blower motor won’t work at all. You may hear a clicking sound when you turn the fan on, but no air will flow through the vents.
- The heater only works intermittently: If the blower motor resistor is partially failing, it may work intermittently. You may be able to turn the fan on and off, but it may only work for a few minutes before it stops again.
How to Fix a Faulty Blower Motor Resistor
Fixing a faulty blower motor resistor is a relatively simple DIY job. Here’s what you’ll need:
- A new blower motor resistor: You can find a new blower motor resistor at your local auto parts store or online. Make sure to get the right one for your car.
- A socket set: You’ll need a socket set to remove the old blower motor resistor.
- A screwdriver: You’ll need a screwdriver to remove the screws holding the blower motor resistor in place.
- A wire crimper: You’ll need a wire crimper to connect the new blower motor resistor to the wiring harness.
Step-by-Step Instructions:
- Locate the blower motor resistor. The blower motor resistor is usually located behind the glove box or under the dashboard. Consult your car’s owner’s manual for specific instructions on locating the resistor.
- Disconnect the battery. Before you start working on any electrical components, it’s important to disconnect the battery. This will prevent you from getting shocked.
- Remove the old blower motor resistor. Once you’ve located the blower motor resistor, remove the screws holding it in place. If the resistor is attached to the blower motor with a clip, release the clip and disconnect the wiring harness.
- Install the new blower motor resistor. Connect the new blower motor resistor to the wiring harness using the wire crimper. Make sure that the connections are secure. If the resistor is attached with a clip, ensure the clip is properly fastened.
- Reconnect the battery. After you’ve installed the new blower motor resistor, reconnect the battery.
- Test the heater. Turn on the heater and see if it works. If the heater is working properly, you’ve successfully fixed the problem.
“It’s not always the blower motor resistor”, says expert auto mechanic, John Smith. “Sometimes the problem can be a loose wire or a faulty blower motor. If the new resistor doesn’t fix the problem, you may need to have your car inspected by a qualified mechanic”.
Frequently Asked Questions
Q: What is the average cost to fix a car heater?
A: The average cost to fix a car heater can vary depending on the type of repair needed. If the problem is a faulty blower motor resistor, the cost will be relatively low. However, if the problem is more serious, such as a faulty blower motor or a leak in the heating system, the cost can be much higher.
Q: How do I know if my car heater needs to be replaced?
A: If your car heater is not working at all, or if it is making strange noises, it may need to be replaced. If you are not comfortable doing the repair yourself, you can take your car to a qualified mechanic for inspection.
Q: What should I do if I can’t fix my car heater?
A: If you are unable to fix your car heater, you can take your car to a qualified mechanic. They will be able to diagnose the problem and make the necessary repairs.
We hope this article has been helpful in addressing your car heater problems. If you need further assistance, please contact where can i get my heat fixed in my car.
You can also call us directly at +1 (641) 206-8880 or visit our office at 500 N St Mary’s St, San Antonio, TX 78205, United States. We’re here to help.
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