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Home >> Saab >> 1989 >> 900 Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> System/Component Tests >> Emission Systems & Sub-Systems >> Exhaust Gas RECIRCULATION >> Two-Port & On-Off EGR System

Two-Port & On-Off EGR System

  1. Warm engine to normal operating temperature. Connect tachometer to engine. Slowly increase engine speed. Note engine RPM at which valve begins to open.
  2. Opening RPM should be as specified. See EGR VALVE SPECIFICATIONS  table. Check EGR valve and thermostatic valve if RPM and valve opening is not within specification.
EGR VALVE SPECIFICATIONS

Application Engine RPM
On-Off 1900
Two-Port 2300-2900
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