Why does heater only work when accelerating on 2002 Jeep Liberty Ltd?

If the heater in your 2002 Jeep Liberty Ltd only works when accelerating, it may be due to low coolant levels or a malfunctioning thermostat. When accelerating, the increased engine RPM can improve coolant circulation, temporarily allowing the heater to function. Additionally, a clogged heater core or a failing water pump could restrict coolant flow, leading to inconsistent heating. It's advisable to check coolant levels and inspect the heating system for any blockages or component failures.