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Ron Z.
Ron Z., - Saturn Tech -
Category: Saturn
Satisfied Customers: 18964
Experience:  18+yrs experience. State Inspector and Saturn Diagnostics
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Thermostat located on a 2004 saturn ion and how is it replaced

Resolved Question:

where is the thermostat located on a 2004 saturn ion and how is it replaced
Submitted: 7 years ago.
Category: Saturn
Expert:  Ron Z. replied 7 years ago.



  1. Drain the cooling system.graphic
  2. Remove the bolts that secure the thermostat housing to the water pump feed pipe.graphic
  3. Remove the feed pipe.graphic
  4. Remove the thermostat and retaining sleeve, noting the orientation for installation.


  1. Install the thermostat and retaining sleeve with the dimple placed into the housing slot.
  2. Important: Lubricate the O-ring with soapy water or coolant before installing the O-ring in the water pump.
  3. Install the feed pipe that connects the thermostat housing to the water pump.
  4. Install the bolt that secures the water pump feed pipe.

  5. Fill the cooling system.

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