Want this question answered?
try M-VACUUM DIAGRAMS search at yahoo.com under Toyota tercel vacuum. 91 to 94 are same
how does the 83 tercel thermostatic vacuum switching valve work
1989 Tercel does not have a carburetor, it is Fuel Injected. Wrong. My 1989 Tercel has a carb.
Vacuum switch signal, open or short circuit detected in vacuum switches, # 1 or # 2 vacuum switches signal, any of them or both fefective...toyota tercel 87 - 94 aut. rep. manual.
haynes Auto manuals from AutoZone.Toyo joe
in between the intake manifold, bottom half.
Haynes Auto manuals from AutoZone.Best books I've found yet. Toyo joe
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.
Haynes Auto manual from Auto Zone for about 20 bucks.Toyo joe
under the back of the car beside driver back tire under the spear tire...