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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.

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1w ago

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