Does anybody know where or have a vacuum diagram for a 2000 Chevrolet Cavalier Z24?

Answer 1

There SHOULD be a "Vehicle Emission Control Information" label under the hood on the passenger side strut tower. If not, you can get one at a dealership. Or go to a car lot that has a car like yours and draw one by looking at theirs. But there are very few vacuum lines on this model. They start at the throttel body. A fat one goes to the brake booster....A smaller one next to it goes to the evac purge valve mounted on the A/C compressor bolt.Then from there goes to the charcoal canister...Two smaller ones below those...One goes to the fuel pressure regulator...The other goes to the acc. panel for your Heater/AC controles.It branches off from there and they go to 3 or 4 vacuum motors that control flaps that change defroster to vents to floor.Hot and Cold(middle knob)is controled by cable and not vacuum....And the last one is on the plastic intake a few inches below the throttle body.It is about 6 inches long and goes to the MAP sensor(manifold air pressure).That MUST be connected and plugged in or it wont start or run.