PCV Valve

There are two 4 cylinders available in the 98 Cavalier, a 2.2L and a 2.4L. Neither of which have a PCV valve, or require positive crankcase ventilation system maintenance. Since I don't know the exact engine size, and the descriptions of operation differ slightly, I will paste both versions. The first is for 2.2L engines;
Crankcase Ventilation System Description
General Description
A crankcase ventilation system is used to provide scavenging of the crankcase vapors. Blow-by gases are passed through a crankcase ventilation oil/air separator into the air cleaner outlet resonator. The oil/air separator is inside the valve rocker arm cover and allows any scavenged oil to be returned to the crankcase.

Operation
The only flow through the oil/air separator is the combustion blow-by, as there is no fresh air inlet to the crankcase. The primary flow of blow-by into the separator is through the openings inside the valve rocker arm cover. The oil/air separator causes oil, which may be suspended in the blow-by gases, to be separated and drain back to the crankcase. The blow-by gases are then drawn into the air cleaner outlet resonator by normal engine vacuum and burned in the combustion process.
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And 2.4L;
1998 Chevrolet Cavalier | Cavalier, Sunfire (VIN J) Service Manual | Engine | Document ID: 192483
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Crankcase Ventilation System Description
General Description
A crankcase ventilation system is used to provide scavenging of the crankcase vapors. Blow-by gases are passed through a crankcase ventilation oil/air separator into the air cleaner outlet resonator. The oil/air separator is mounted to the engine block and allows any scavenged oil to be returned to the crankcase.

Operation
The only flow through the oil/air separator is the combustion blow-by, as there is no fresh air inlet to the crankcase. The primary flow of blow-by into the separator is through a hose from the timing chain housing. The oil/air separator causes oil, which may be suspended in the blow-by gases, to be separated and drain back to the crankcase. The blow-by gases are then drawn into the air cleaner outlet resonator by normal engine vacuum and burned in the combustion process.

Where is the PCV valve on a 2000 Chevy Cavalier? The motor is a 2.2 4cyl.

there should be a crankcase vent tube on the valve cover going to the intake and it should be there but i dont have a car infront of me to check

jim

I have taken the vent tube hose off. The hose is connected to a permanent metal connection on the valve cover. This does not look like a replaceable PCV valve. Can you help further.

best i could do is call up to hq to see

Where is the PCV vave located on the Chevy Cavalier
?

its located in the center of the rear valve cover. when replacing it make sure not to pull the hose off of the intake manifold because its hard to get it back on. hope this helps

1991 Chevy Cavalier mileage: 173,241. Where can I locate my PCV valve? I bought one at my local auto parts store and I can't find anything that looks like it. There are two hoses that lead into the valve cover. One can be removed to expose a silver tip that somewhat resembles the PCV that I purchased but it seems to be a different size. The other hose, when removed, exposes a plastic piece that can be unscrewed to reveal three or four plastic prongs on the end. Could the PCV go in here?

From what you describe, you found the PCV valve, the one with the silver tip. The auto parts store may have sold you the incorrect part.