Garbage disposal runs intermittently; sometimes starts, sometimes does nothing

Safety first: Turn OFF power at the breaker before accessing any wiring.

• Step 1 – Check plug and outlet: For corded units, ensure the plug is fully inserted and the outlet is not loose. Replace the outlet if it does not grip the plug firmly.
• Step 2 – Inspect junction box: Remove the electrical cover on the disposal and verify that all wire nuts are tight and wires are not corroded or broken.
• Step 3 – Test wall switch: Replace the switch if it feels loose, crackles, or fails to consistently energize the disposal.
• Step 4 – Monitor overload reset: If the unit stops after running for a short time and then works again after cooling, the internal overload may be tripping due to motor issues.
• Step 5 – Replace if persistent: If intermittent operation continues after wiring and switch checks, the internal motor or overload is likely failing. Replace the disposal.