it allows your crankcase air to prevent a "vacuum" from occurring, it may also release small amounts of oil from your CC back to the intake which essentially gets pulled back through the engine
The 4.0 engine was designed with a Controlled Crankcase Ventilation hose - the smaller at the rear of the valve cover, and a front air inlet hose from the breather. It moves crankcase gas into the intake manifold through the small hose, and has no PCV.
The 1998 Toyota Corolla air intake temperature sensor can be found on the air intake hose. The air intake hose will come from the air intake box and proceed to the engine.
No hose connects from the air intake to the radiator. It may connect to a bracket mounted not the radiator but it does not connect to the coolant. If that is what you are stalking about it is called an air intake tube.
Crankcase breather tube.
It is in the air intake hose right were it comes out of the air filter box and starts going to the engine. The air intake hose is hooked to it and it is the same size as the hose is.
It should be on the air intake hose from the air cleaner to the throttle body, it plugs into the hose.
If you have crankcase pressure in an engine, it's because your crankcase ventilation system has become clogged. There is a hose running from your valve cover to your air intake; this gets clogged up with oil. Pull it out, clean it in solvent, blow through the hose to make sure you can, and put the car back together.
That would be part of the crankcase ventilation system. I guess you could call it the air filter housing to engine crankcase ventilation tube.
Disconnect the PCV fresh air inlet hose (crankcase breather hose) from the air intake duct remove the coupling also loosen the hose clamp at the throttle body end of the air intake duct and disconnect the duct from the throttle bodyLoosen the hose clamp at the air filter housing end of the air intake duct disconnect the intake duct from the filter housing and remove itDisconnect the electrical connector from the MAF sensorRemove the air filter housing retaining bolt and remove the filter housing.When you pull up on the air filter housing you will feel a slight resistance that's the locator pin and grommet on the underside of the filter housing.Grasp the filter housing firmly and lift it straight up and the grommet will disengage
air intake to crankcase, crankcase to pcv line
The throttle position sensor on a 1997 Chevy Venture is located next to the air intake hose on the Electronic Fuel Injector (carburetor). Follow the air intake hose from the air filter to the EFI (carburetor) and it will be on the right hand side where the air intake hose connects to the carburetor.
Crankcase breather hose.