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Eric
Eric, Automotive Repair Shop Manager
Category: Cadillac
Satisfied Customers: 32046
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: 8 years ago.
Category: Cadillac
Expert:  Eric replied 8 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



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



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



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



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



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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 and 2 other Cadillac Specialists are ready to help you
Customer: replied 8 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>