LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2003 >> Grand Cherokee Overland >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Engine Controls - Service & Adjustment Specifications) >> Ignition Systems >> Ignition Timing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Ignition Timing

WARNING: This page is about a different car, the 2002 Jeep Wrangler, 2002 Jeep Liberty, and 2002 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

All models are equipped with Powertrain Control Module (PCM) computerized ignition. PCM controls ignition timing. DO NOT attempt to adjust ignition timing by rotating distributor (2.5L) or oil pump drive shaft assembly (4.0L). If distributor or oil pump drive is rotated or replaced, fuel system synchronization will be changed. To synchronize fuel system, see FUEL SYSTEM SYNCHRONIZATION under FUEL SYSTEMS in ON-VEHICLE ADJUSTMENTS article.

scientia non olet · About LEMON Manuals