it should be right off your intake manifold.
under the intake port tubes
On my 1978 Camaro one vacuum line goes to the EGR valve and the other goes to the carbuerator.
Should be on top or side of valve covers round disc like thing usually silver & has rubber vacuum hose going to it
On a 1994 Camaro Z28, the EGR (Exhaust Gas Recirculation) vacuum line can typically be found attached to the EGR valve, which is located on the intake manifold near the rear of the engine. The vacuum source for the EGR valve usually comes from the intake manifold itself, ensuring that it operates correctly under specific engine conditions. If you're troubleshooting or inspecting the EGR system, follow the vacuum line from the EGR valve back to the intake manifold for proper diagnosis.
It's for a modulator valve. The later cars all shift by electronics and signals from the ECM. Yours however still uses a modulator valve and vacuum to assist in determining shift points.
Check the vacuum lines that run down to the front wheel hub bearings if they are good follow the vacuum lines up to the 4x4 vacuum solenoidon the firewall and check for a stuck vacuum valve
The Vacuum switching valve controls the EGR Valve.
EGR valves are usually activated by a vacuum line from a thermal sensor. It could be leaks in the vacuum lines, a failure of the sensor, or a failure of the valve itself. Since the valve is exposed to the heat of the exhaust system, it is prone to jamming from carbon buildup and destruction of the vacuum diaphragm from heat.
The vacuum cut by-pass valve is typically located in the vacuum system of a vehicle's engine, often near the intake manifold or connected to the vacuum lines. Its purpose is to regulate the vacuum pressure within the system, allowing excess vacuum to be released to maintain optimal performance. This valve plays a crucial role in various engine functions, including emissions control and improving fuel efficiency.
on a '95 camaro the EGR valve should be next to the radiator hose
The vacuum control valve for the heater on a 1992 GMC Suburban is typically located on the heater control assembly, often behind the dashboard. To access it, you'll need to remove the lower dash panel and possibly the center console, depending on the specific configuration. Once you have access to the heater control area, you can locate the vacuum lines connected to the valve. Be cautious with the electrical connections and vacuum lines during removal and installation.
the brake vacuum booster connects to the intake manifold all by itself and the PCV valve hose should hook directly to your carburetor.