Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Toyota Corolla Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Ignition Timing
4-CYLINDER IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Base Timing | Advance Timing | ||||
|---|---|---|---|---|---|---|
| Camry | 10 @ 700 | 13-22 @ Idle | ||||
| Celica | ||||||
| 4A-FE | (1) 10 @ 800 | 5-15 @ Idle | ||||
| 5S-FE | (1) 10 @ 800 | 13-22 @ Idle | ||||
| 3S-GTE | 10 @ 800 | 12-21 @ Idle | ||||
| Corolla | ||||||
| 4A-FE | ||||||
| 2WD | 10 @ 700 | 5-15 @ Idle | ||||
| 4WD | 10 @ 800 | 5-15 @ Idle | ||||
| 4A-GE | 10 @ 800 | 16 @ Idle | ||||
| Pickup/4Runner (22R-E) | ||||||
| 4WD Pickup w/ A/T | 5 @ 850 | 10-14 @ Idle | ||||
| All Others | 5 @ 750 | 10-14 @ Idle | ||||
| Tercel | 10 @ 800 | 7-17 @ Idle | ||||
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6-CYLINDER IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Base Timing | Advance Timing | |
|---|---|---|---|
| Cressida | 10 @ 700 | 9-11 @ Idle | |
| Land Cruiser | 7 @ 650 | 12 @ Idle | |
| Supra | |||
| Non-Turbo | 10 @ 700 | 9-10 @ Idle | |
| Turbo | 10 @ 650 | More than 12 @ Idle | |
V6 IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Base Timing | Advance Timing |
|---|---|---|
| Camry | 10 @ 700 | 13-27 @ Idle |
| Pickup & 4Runner | 10 @ 800 | 8 @ Idle |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.