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Home >> Toyota >> 1997 >> Tacoma SR5, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 3.4L >> 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 monitor engine RPM by using scan tool. For scan tool connections, see IDLE SPEED & MIXTURE in ADJUSTMENTS - 3.4L article.
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