Pickup 2WD L4-2466cc DSL (1984)
EGR Valve: Testing and Inspection
1.
Disconnect and plug vacuum hose to EGR valve, start engine and observe engine idle. If engine runs rough or stalls, check for improperly seated
EGR valve.
2.
Apply manifold vacuum directly to EGR valve with engine running at idle.
3.
If engine does not run rough or stall, EGR valve is defective.