1. Lack of lubrication: When installing new brake pads, it's important to lubricate the caliper piston and slide pins to ensure smooth movement. If you did not apply any lubricant, the piston and/or slide pins could be sticking due to friction.
2. Damaged or worn caliper components: If the caliper piston or slide pins are damaged or excessively worn, they may no longer be able to move smoothly. Inspect these components for any signs of damage or wear.
3. Incorrect brake pad installation: If the brake pads were not installed correctly, it may cause the caliper piston to bind or stick. Ensure the brake pads were seated properly in the caliper bracket and that they are the correct size and shape for your Accord.
4. Brake fluid issues: If the brake fluid is old or contaminated, it can damage the seals in the caliper, leading to sticking. Make sure to use fresh, high-quality brake fluid when changing the brake pads.
5. Corrosion or rust: Over time, corrosion and rust can build up on the caliper piston and/or slide pins, causing them to stick. Clean the caliper and other brake components thoroughly to remove any corrosion.
6. Air in the brake lines: If air gets into the brake lines during the brake fluid change, it can create bubbles that block the smooth flow of fluid, causing the caliper piston to stick. Properly bleed the brake lines to eliminate any air pockets.
If the problem persists or if you are not comfortable inspecting and resolving the issue on your own, it is recommended to consult with a qualified mechanic or take your vehicle to a reputable auto repair shop.
