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Home › Chevrolet › 1990 › Forward Control 3.9 L › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - TBI › Diagnostic Tests › Code 35: Idle Speed Error (2.5L) › PCV Valve

PCV Valve

The wrong PCV valve may cause incorrect idle speed.

Fig 1: Code 35: Idle Speed Error (2.5L) Circuit Diagram

G90A18838

Fig 2: Code 35: Idle Speed Error (2.5L) Flow Chart

G90E13957