Various Zetec thermostat housings (ZX2 on right).

Note: Before beginning this procedure, keep in mind that care should be used when working around the thermostat housing because they are known to become brittle after time and crack very easily.

Removal

1. Disconnect the battery ground cable (14301).
2. Drain the engine coolant to a point below the water thermostat (8575).
3. Disconnect the connector from the camshaft position CMP sensor (6B288).
4. Remove the bolts and move to one side water hose connection (8592).
5. Remove the water thermostat and seal from the water thermostat housing.
6. Inspect the seal and the water thermostat.

Installation

1. To install, reverse the removal procedure.
2. Fill the cooling system.
3. Start the engine and check all hoses and connections for leaks. Allow the engine to warm up so that the water thermostat opens.
4. Stop the engine. Top off the coolant recovery reservoir as necessary to maintain minimum cold fill level.

Also see

• Ford Escort & ZX2 section for the entire index of all Ford Escort and ZX2 related articles.