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Home >> Toyota >> 1998 >> 4Runner SR5, 2.7 M >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 4-CYL >> Emission Systems & Sub-Systems >> EGR Vacuum Modulator >> Notes
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EGR Vacuum Modulator: Notes

NOTE: When testing EGR vacuum modulator, it may be necessary to 55 monitor engine RPM by using scan tool. Scan tool may be connected to DLC-3 for monitoring engine RPM. See Figure-Figure or Figure-Figure .
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