Base Ignition Timing
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Ford Ranger, 1991 Ford RV Cutaway, 1991 Ford Pickup, 1991 Ford F-Super Duty, and 1991 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Base Ignition timing on the 2.3L models is not adjustable.
Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE Section. Ensure all accessories are off and transmission is in Park or Neutral. Set parking brake. Disconnect automatic parking brake release (if equipped). Ensure vehicle front wheels are in straight-ahead position and curb idle speed set to specification.
NOTE:
Ignition timing is not adjustable on models with DIS or EDIS.
6-CYLINDER BASE IGNITION TIMING
| Application (1) | Degrees BTDC @ RPM | ||
|---|---|---|---|
| 4.9L | 10 @ (1) | ||
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V6 BASE IGNITION TIMING
| Application (1) | Degrees BTDC @ RPM | |||||
|---|---|---|---|---|---|---|
| 2.9L | ||||||
| Automatic Transmission | 10 @ 800 | |||||
| Manual Transmission | 10 @ 850 | |||||
| 3.0L | 10 @ (2) | |||||
| 4.0L | Timing not adjustable. | |||||
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V8 BASE IGNITION TIMING
| Application | (1) Degrees BTDC @ RPM | |||
|---|---|---|---|---|
| 5.0L | ||||
| Automatic Transmission | 10 @ 525-825 | |||
| Manual Transmission | 10 @ 550-850 | |||
| 5.8L | ||||
| C6 Automatic Transmission | 10 @ 630-930 | |||
| E4OD Automatic Transmission | 10 @ 580-880 | |||
| Manual Transmission | 10 @ 580-880 | |||
| 7.5L | 10 @ 500-800 | |||
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