The Honda Accord blower motor may make noise due to several issues such as a defective belt, bad bearings, obstructions, and more. A thorough inspection and some troubleshooting can help diagnose the cause. Replacement or repair may be required to resolve the noise issue.
Common Causes Of Noisy Blower Motor In Honda Accord
There are several potential causes behind the Honda Accord blower motor making noise. Identifying the root cause is important before attempting any repairs.
Defective Belt
The serpentine belt which runs the blower motor may become loose, damaged or worn out over time. This can cause slippage and uneven running, creating noise. Inspecting the belt’s condition and re-tensioning or replacing it can solve the issue.
Bad Bearings
Worn out or damaged bearings in the blower motor assembly can also generate noise during operation. Replacing the bearings may be required to stop the sound.
Obstructions and Debris
Accumulated debris like leaves, twigs or other objects obstructing the blower motor or housing can lead to noise issues. Cleaning the assembly and ducts removes such obstructions.
Electrical Issues
Faulty electrical connections or a malfunctioning blower motor resistor can also manifest as noise from the assembly. Checking wiring and connectors may help.
Age and Wear
With extended use over many years, the Honda Accord’s blower motor components naturally degrade and wear out, leading to noise development. Replacing older motors reduces sound.
Locating The Blower Motor In Honda Accord
Before inspecting or repairing the blower motor, it helps to understand its location in the Honda Accord.
The blower motor is housed behind the glove compartment, under the dash. Accessing it requires removing the glove box assembly.
On models before 2008, removing three screws allows the glove box to come down. On newer versions, there are snap-fit tabs that must be detached first.
With the glove compartment lowered or removed, the blower motor and housing will be visible for inspection, cleaning or replacement.
Troubleshooting Noisy Honda Accord Blower Motor
Some basic troubleshooting steps can help isolate the cause of noise from the blower motor:
- Listen closely to pinpoint the origin of noise – motor, ducts or vents.
- Remove accessories like cabin filters to access the motor.
- Clear any debris or obstructions in the blower motor housing.
- Inspect serpentine belt for damage or looseness. Adjust tension if required.
- Check mountings and fittings for any looseness. Tighten if necessary.
- Test the blower motor independently by disconnecting it from ducts.
- Feel for vibrations or wobbling in the blower motor shaft.
- Check wiring connectors and resistors for faults.
Repairing Or Replacing The Noisy Blower Motor
Once the source of noise is identified, repair or replacement of the faulty components may be needed:
Belt Replacement
A worn out or loose belt just needs replacement with a matching new Honda blower motor belt. Proper re-tensioning during installation helps.
Bearing Replacement
Excess bearing noise calls for replacement of the bearings. Skill is needed to disassemble the motor and press-fit new bearings.
Blower Motor Replacement
If the motor assembly is damaged or excessively noisy, replacing the entire Honda Accord blower motor resolves the issue.
Cleaning
Removing collected debris and deep cleaning the housing and fins clears obstructions.
Electrical Repair
Faulty wiring, connectors or resistors must be repaired or replaced to stop noise.
Is The Blower Motor Repairable?
While some blower motor repairs can be done, there are limits to repairing these motors. For minor issues like debris clogs or loose wiring, DIY cleaning and repairs may help stop noise. But major problems like bad bearings, worn brushes or burned windings usually require complete blower motor replacement.
Attempting to rebuild motors with such internal damage is difficult and may not resolve noise fully. It’s generally more cost-effective to install a new replacement motor than attempting extensive repairs on an old noisy unit.
How Long Do Blower Motors Last In A Car?
The average lifespan of a blower motor is 6-8 years, or around 60,000 to 100,000 miles in most cars. High-quality motors may last 10+ years. Factors like climate, usage, and maintenance impact longevity.
Running the blower at max speed constantly, dirt buildup, and exposure to moisture reduce motor life. Proper lubrication, gentle blower speeds, and clearing debris helps extend a blower motor’s functional life before noise develops. With care, the original blower motor may last up to the lifetime of most cars.
Is A Noisy Blower Motor Bad?
Yes, noise from a car’s blower motor is an indication of problems. It usually starts with minor bearing wear or debris causing slight noise. But if left unchecked, the noise tends to worsen over time as internal damage progresses. Excessive noise suggests the motor’s bearings, brushes or windings are degrading.
This will eventually lead to complete blower failure. It’s best to diagnose and address blower motor noise issues promptly to avoid being left without heating or air conditioning. A noisy motor forewarms of impending problems.
How Do I Stop My Blower From Making Noise?
Start troubleshooting by clearing any debris like leaves obstructing the blower housing. Then inspect the motor mounts for looseness and tighten if needed. Check the condition and tension of the serpentine belt running the blower, adjusting or replacing if faulty.
Add lubricant to the blower bearings if they are dry. If bearings are worn out, replacement may be required. For older blowers with excessive internal wear, installing a new blower motor is the permanent solution to stop noise issues.
Preventing Future Noisy Blower Motor Issues
Some tips to minimize chances of Honda Accord blower motor noise issues in the future:
- Regularly change cabin air filters to prevent clogging.
- Inspect belt condition and re-tension periodically.
- Lubricate blower motor with a lightweight oil spray.
- Keep debris and leaves cleared from the cowl intake area.
- Use a foam blower nozzle to dislodge debris in housing.
- Avoid using water wash in the engine bay area.
- Check mounts and fittings, tighten if any looseness develops.
When to Call a Mechanic
While some blower motor repairs can be DIY, it is advisable to call a professional mechanic for assistance if:
- The noise source is unclear after troubleshooting.
- Bearing replacement or motor disassembly is required.
- Electrical faults need diagnosis and repair.
- Parts availability or warranty issues need resolution.
- Problem keeps recurring despite repairs.
Getting a certified Honda technician to inspect and fix the noisy blower motor ensures proper diagnosis and workmanship.
Frequently Asked Questions
What Causes The Blower Motor To Make Noise In A Honda Accord?
Common causes include a loose or worn belt, bad bearings, obstructions in housing, electrical issues, and normal wear of components over time.
Where Is The Blower Motor Located In A Honda Accord?
The blower motor is positioned behind the glove box under the dash. Removing the glove box assembly provides access.
How Can I Troubleshoot A Noisy Blower Motor Myself?
Listen closely, remove filters, clear debris, check belt, test motor independently, feel for vibrations, inspect wiring as initial troubleshooting steps.
When Should I Replace Rather Than Repair The Blower Motor?
If bearings are damaged, the motor is excessively noisy or worn out, or electrical windings are faulty, replacement is better than repairing the old motor.
How Much Does It Cost To Replace A Honda Accord Blower Motor?
Blower motor replacement cost is typically between $250-$350 for parts and labor. High-end motors can cost more.
Conclusion
The Honda Accord blower motors can make noise due to several faults. Methodically troubleshooting helps identify the root cause before repairs. Simple fixes involve cleaning or belt replacement. Bad bearings or motors need replacement. Seeking professional help for diagnosis or difficult repairs is recommended. With some care and maintenance, major blower motor noise issues can be minimized.