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Home >> Saab >> 1993 >> 9000 CS, 2.3 M, Standard >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing >> EGR Valve >> Test 2 >> Ported EGR Valve
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Ported EGR Valve

Warm engine to operating temperature. Disconnect Red-marked hose from modulator valve. Apply vacuum to hose. If engine RPM drops, EGR valve is okay. If engine RPM does not drop, check hoses, connections, and vacuum tank. Information to check vacuum signal to EGR valve is not available.

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