It is the black plastic looking thing on the top center of the engine. They give alot of problems by wearing through and leaking water into the engine. <--- on a 3.8 but a 2001 century does not have this engine in it!
Correct torque on 2000 model : 18 Ft. lbs.- upper intake manifold [ plenum ].
The Thermostat is located in the neck where the upper radiator hose connects to the engine. you have to take off the upper intake plenum to access this. Alot of crap just to change the thermostat. excellent design GM. Jamie
Plenum is another name for the upper intake manifold.
The intake plenum is simply the top of the upper intake manifold, where the throttle body is attached. It is made of black plastic.
The plenum is the upper part of the intake manifold.
It is another name for the upper part of the intake manifold.It is another name for the upper part of the intake manifold.
Under the upper intake plenum. You have to unbolt the throttle body and the take out the upper intake plenum bolts to remove the plenum...(the part that says 3.1 Multi-Port). Once you have it off you'll see them.
remove upper intake plenum
The IAC valve is mounted on the upper intake plenum (manifold)
under the upper plenum of the intake manifold it is round and is bolted to the fuel line and has a vaccum line attached to it. you need to remove the upper plenum to access it
how do i resemble the upper engine to a 1994 Buick Century? with a 2.2 litter/ vin #1g4ag5544r6420018
Remove the intake maifold upper intake plenum