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Eric, Automotive Repair Shop Manager
Category: Cadillac
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Experience:  20+ yrs. experience as repair shop manager and technician.
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Need location of thermostat for 97 Cadillac Deville V8

Resolved Question:

Need location of thermostat for 97 Cadillac Deville V8
Submitted: 5 years ago.
Category: Cadillac
Expert:  Eric replied 5 years ago.

Hi,

 

Its at the intake manifold hidden by the air cleaner housing:

 

4.6L Engine

  1. Drain the coolant to a level below the thermostat housing.
  2. Remove the air cleaner
  3. Remove the 2 bolts securing the thermostat housing to the intake manifold.
  4. Remove the thermostat housing.
  5. Remove the thermostat and O-ring from the housing.




Click image to see an enlarged view

Fig. Thermostat installation-4.6L Engine



Click image to see an enlarged view

Fig. Loosen the upper radiator hose clamp at the thermostat housing



Click image to see an enlarged view

Fig. Remove the upper radiator hose clamp from the thermostat housing



Click image to see an enlarged view

Fig. Remove the thermostat housing retaining bolts and . . .



Click image to see an enlarged view

Fig. . . . remove the thermostat housing from the engine



Click image to see an enlarged view

Fig. Separate the thermostat from the housing

To install:

  1. Install the thermostat and new O-ring to the housing.
  2. Install the thermostat housing to the intake manifold. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Install the air cleaner .
  5. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.
Eric, Automotive Repair Shop Manager
Category: Cadillac
Satisfied Customers: 25141
Experience: 20+ yrs. experience as repair shop manager and technician.
Eric and 6 other Cadillac Specialists are ready to help you
Customer: replied 5 years ago.
<p>It worked really well, the instructions were easy to follow and the thermostat was changed without even a busted knuckle as usually happens. Thank you very much for your help.</p><p> </p><p>RL</p>

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