The VSV is located on the intake manifold side of the emission control valve set.
in between the intake manifold, bottom half.
The Vacuum switching valve controls the EGR Valve.
the valve is on lower side of engine near fire wall.
It is a bimetallic vacuum switching valve. it controls the EGR system.
how does the 83 tercel thermostatic vacuum switching valve work
under the back of the car beside driver back tire under the spear tire...
EGR stands for Exhaust Gas Recirculation. The purpose of the EGR system is to lower the amount of oxides of nitrogen the engine produces. The parts of the system are the vacuum actuated EGR control valve, the vacuum switching valve, and the EGR vacuum modulator assembly.
i know one hooks to the brake booster on chevrolet's and toyota's. just follow it from there.
1993 on Toyota corolla vacuum hose
the vacuum switching valve that run the valve are a common problem they are intermittent stuck closed so do not operate the valve
passenger side firewall. behing black charcoal canister, a foot from the hydraulic hood support.
Toyota ae 91 4AF Vacuum hose diagram