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Home >> Toyota >> 1993 >> 4Runner 2.4 R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION (EGR) >> Notes
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Exhaust Gas RECIRCULATION (EGR): Notes

NOTE: EGR systems contain different components and have different operating parameters depending on application. See Figure-36. When testing EGR system and components, use proper illustration to determine component location.
EGR TESTING SPECIFICATIONS

Application Type Minimum Temperature Engine RPM
2.4L
Calif. Models 93°F (34°C) (1) 3500
All Others 86°F (30°C) (1) 3500
3.0L 118°F (48°C) 3500
(1) Check at 3000 RPM when applying vacuum to EGR valve with vacuum pump.