why is my Honda Civic 9th Generation (2012-2015) making a whining noise when I accelerate?

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical shorts during inspection.

2. Inspect and Replace Serpentine Belt

• Tools Required: Socket set, belt tensioner tool
• Remove the serpentine belt by using the belt tensioner tool to relieve tension.
• Inspect the belt for cracks, fraying, or glazing. If damaged, replace with a new belt.
• Reinstall the new serpentine belt, ensuring it follows the correct routing diagram usually found on the engine bay.

3. Check and Replace Alternator (if faulty)

• Tools Required: Socket set, multimeter
• Disconnect the electrical connectors from the alternator.
• Remove the alternator by unscrewing the mounting bolts.
• Test the alternator with a multimeter to check for proper voltage output (should be around 13.8 to 14.4 volts).
• If faulty, install a new alternator by reversing the removal steps and reconnecting all electrical connections.

4. Transmission Fluid Check and Replacement

• Tools Required: Transmission fluid pump, socket set, fluid catch pan
• Place a catch pan under the transmission pan and remove the drain plug to drain the old fluid.
• Inspect the fluid for burnt smell or metal shavings indicating internal issues.
• Replace with the recommended transmission fluid type (usually Honda ATF DW-1).
• Reinstall the drain plug and refill the transmission with the new fluid.