Diagnostic Aids
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Check for excessive deposits on the EGR pintle or seat. Check for deposits that may interfere with the EGR valve pintle extending completely or cause the pintle to stick.
- If condition is determined to be intermittent, refer to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 3.1L CENTURY, GRAND PRIX & MALIBU article.