Question about 2002 Cadillac Deville

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I need step by step instructions on replacing the plenum on a '02 deville and maybe a labeled diagram of that area if that is possibe. Thanks, 27yr old female tired of paying for work. :)

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SOURCE: I need step by step instructions on how to

1990 Cadillac Deville 4.5L FI 8cyl Repair Guide

CAUTION:
Never open, service, or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. In addition, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

4.5L and 4.9L Engines

  1. Drain the coolant to a level below the thermostat housing.
  2. It may be necessary to remove the upper air filter assembly on some models.
  3. Remove the 2 bolts securing the upper thermostat housing to the lower housing.
  4. Remove the upper thermostat housing.
  5. Remove the thermostat and O-ring from the lower housing.
a6c4ec3.gif

Fig. Thermostat installation-4.5L and 4.9L engines


To install:
  1. Install the thermostat and a new O-ring to the lower housing.
  2. Install the upper thermostat housing to the lower housing. Tighten the thermostat housing bolts to 20 ft. lbs. (27 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

Hope helps with this (remember rated this) Good luck.

Posted on Jan 14, 2010

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