Ford Flex overheating issue possibly related to water pump after thermostat replacement on Ford Flex

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Ford Flex owners report experiencing overheating issues even after replacing the thermostat, which may be linked to water pump problems. A faulty water pump can hinder the engine's cooling system by failing to circulate coolant effectively, leading to engine overheating. Symptoms of water pump failure can include coolant leaks, persistent overheating, and other related complications. If overheating continues after a thermostat replacement, owners are advised to investigate additional factors such as a clogged radiator, leaking head gasket, faulty radiator fan, low coolant levels, broken sensors, air in the cooling system, or a worn-out thermostat. Prompt attention to water pump issues is crucial to prevent further engine damage and maintain optimal cooling system performance, and in persistent cases, inspecting or replacing the water pump may be necessary.

2 people reported this problem
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Ford Flex vehicles with this problem

1 model year affected
Average mileage: 85,000 miles
(85,000 - 85,000)

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