Leak or blown gasket.
Under the intake manifold. where is the intake manifold!
underneath the intake manifold next to the oil filter
The EVAP purge solenoid on a 2001 Nissan Sentra GXE is under the hood. It is mounted to the top of the intake manifold.
The coolant drain plug on a Nissan Micra engine block is on the upper part of the block. It is under the intake manifold.
To remove the intake manifold on a 2001 Nissan Sentra, start by disconnecting the negative battery terminal and removing any components obstructing access, such as the air intake and throttle body. Next, detach the vacuum lines, electrical connectors, and any hoses connected to the manifold. Unscrew the manifold bolts in the specified sequence to prevent warping, then carefully lift the manifold off the engine. Ensure all gaskets are replaced during reassembly to avoid leaks.
PCV VALVE - Under hood, center, upper engine area, mounted in intake manifold
Coolant temp sensors are typically somewhere on the intake or on the cylinder heads. They have no more than 2 wires going to them, most of the time only one.
On intake manifold.
The engine coolant temperature sensor and coolant temperature gauge sender are located on the passenger's side of the engine, under the intake manifold.
you have a coolant leak
Intake manifold at top of engine?
If you know where the air control valve its right nexts too it ,theres a connector next to it on the right of it ,its kind of hidden.mines a red connector. If you don't know where the air vl control valve is its on the left side of the engine under the intake manifold