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Oldsmobile Master
3,854 Answers
- Posted on Jan 28, 2010
Re: Replacement of thermostat 2001 alero
Thermostat replacement on 3.4 liter, Not the thermostat housing is between the Throttle body and exhaust crossover. If you have small haves and the right tools you can remove the two botls without removing the crossover and throttle body. The bottom bolt to the thermostat does not have to come all the way out, there is a cut out on the housing so you can slid it out. Good luck and take your time.
- Remove the air cleaner and duct assembly.
- Drain the coolant until the coolant level is below the thermostat.
- Remove the crossover exhaust pipe.
- Remove the radiator hose from the thermostat housing.
- Remove the thermostat housing bolts and clean any sealer from the bolt threads.
- Remove the thermostat housing and gasket.
- Remove the thermostat.
- Install the thermostat.
- Install the thermostat housing bolts and tighten them to 18 ft. lbs. (25 Nm).
- Install the radiator hose to the thermostat housing.
- Install the crossover exhaust pipe.
- Install the air cleaner and duct assembly.
- Good luck...
- Fill the cooling system.
- Install the thermostat housing and gasket.
- Clean the mating surfaces.
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