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Home >> Infiniti >> 1995 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/O Codes 4.5L >> Symptoms >> Surging

Engine Controls - Tests W/O Codes 4.5L: Symptoms: Surging

Check heated oxygen sensor(s).
Check EGR operation. See SYSTEM/COMPONENT TESTS article.
Replace ECM with known good unit.

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