Question about 1996 Mazda Millenia

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How to replace a thermostat 1996 mazda mellinia

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Thermostat - REMOVAL & INSTALLATION

CAUTION When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
1.5L, 1.6L, 1.8L (except K8) and 2.2L Engines

  1. Disconnect the negative battery cable. Drain the radiator to below the level of the thermostat.
  2. If necessary, remove the air cleaner assembly.
  3. If necessary, disconnect the coolant temperature switch at the thermostat housing.
  1. Remove the upper radiator hose.
  2. Remove the mounting nuts, thermostat housing, thermostat and gasket.
Do not pry the housing off.


To install:
  1. Clean the thermostat housing and the cylinder head mating surfaces.
  2. Insert the thermostat into the rear cylinder head housing with the jiggle pin at the top. The spring side of the thermostat should face the housing.
  3. Position a new gasket onto the studs with the seal print side facing the rear cylinder housing.
  4. Install the thermostat housing and 2 nuts. Tighten the nuts to 14-22 ft. lbs. (19-5 Nm).
  5. Install the upper radiator hose.
  6. If detached, connect the coolant temperature switch.
  7. If removed, install the air cleaner housing.
  8. Fill the cooling system. Connect the negative battery cable, start the engine and check for leaks. Check the coolant level and add coolant, as necessary.


2.0L Engine
See Figures 3, 4, 5, 6, 7, 8, 9 and 10
  1. Disconnect the negative battery cable.
  2. Drain the engine coolant from the radiator to below the level of the thermostat.
  1. Disconnect the lower radiator hose from the engine.
  2. Remove the housing bolts, thermostat housing, thermostat and gasket.
Do not pry the housing off.


To install:
  1. Clean the thermostat housing and the cylinder head mating surfaces.
  2. Make sure that the thermostat jiggle pin is aligned with the gasket projection.
  3. Install the thermostat to the housing. Align the gasket projection with the opening in the housing. The spring side of the thermostat should face into the housing.
  4. Install the thermostat housing cover and tighten both bolts to 14-19 ft. lbs. (19-25 Nm).
  5. Fill the cooling system. Connect the negative battery cable, start the engine and check for leaks. Check the coolant level and add coolant, as necessary.

Hope helps (remember rated this).

Posted on Jul 08, 2010

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