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Home >> BMW >> 1988 >> 535is Automatic >> Repair and Diagnosis >> Engine Performance >> System >> MOTRONIC CEC System >> Testing >> Test 5: Idle Control Valve >> Notes
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Test 5: Idle Control Valve: Notes

CAUTION: If a problem occurs affecting idle/idle mixture, do not adjust tamper-proof idle by-pass screw. Check all components which could cause problem. If all components work properly and idle/idle mixture problem persists, idle control valve and MCU must be replaced.