Ignition Timing: Non-Turbo

Start engine and warm engine to normal operating temperature. Shut engine off. Connect scan tool to data link connector No. 3. See Fig 1. Scan tool is used to read engine RPM.
Connect timing light lead to White wire at the ignitor and to battery. See Fig 2. Ignitor is located near driver's side strut tower.
Apply parking brake. Place transmission in Neutral. Start engine and maintain engine at 2500 RPM for 90 seconds and then allow engine to idle. Ensure idle speed is 650-750 RPM.
Install Jumper Wire (SST 09843-18020) between terminals TC and E1 on data link connector No. 1. See Fig 3. Data link connector No. 1 is located at passenger's side rear corner of engine compartment, on the firewall.
NOTE: Timing marks are located on front cover.
Ensure base timing is within specification at idle with transmission in Neutral with A/C and all accessories off. See 6-CYLINDER IGNITION TIMING table.
Remove jumper wire from data link connector No. 1. Ensure ECM controlled timing is within specification. See 6-CYLINDER IGNITION TIMING table. Shut engine off. Remove jumper wire, scan tool and timing light.

6-CYLINDER IGNITION TIMING (Degrees BTDC @ Idle) ⁽¹⁾

Application

⁽²⁾ Base Timing

⁽³⁾ ECM Controlled Timing

Non-Turbo

8-12

6-16

Turbo

8-12

10-20

⁽¹⁾	Check with engine at normal operating temperature, transmission in Neutral, parking brake applied, A/C and all accessories off.

⁽²⁾	With Jumper Wire (SST 09843-18020) installed between terminals TC and E1 on data link connector No. 1 for non-turbo models, or TE1 and E1 on data link connector No. 1 for turbo models.

⁽³⁾	With jumper wire removed from data link connector No. 1.

Fig 1: Connecting Scan Tool

Fig 2: Connecting Timing Light (Non-Turbo)

Fig 3: Installing Jumper Wire Between Data Link Connector No. 1 Terminals (Non-Turbo)