Section 11 (Engine Control System - Tests W/O Codes): Symptoms: Notes

WARNING: This page is about a different car, the 1998 Pontiac Trans Sport, 1998 Oldsmobile Silhouette, and 1998 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before proceeding with any symptom diagnosis, perform all steps under PRELIMINARY CHECKS.

NOTE: If PCM displays data but engine fails to start, see NO START DIAGNOSIS in BASIC TESTING article.