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.
1991 Ford Probe GL, AutomaticFACTORY OEM SERVICE PROCEDURE
Spark Plug Specifications
SPARK PLUG TYPES
| Application | Motorcraft No. | |
|---|---|---|
| 1.8L | AGSP-32C | |
| 1.9L | AGSF-34C6 | |
| 2.2L | AGSP-33C | |
| 2.3L | ||
| HSC & HSC | AWSF-42C | |
| OHC | AWSF-32C | |
| 2.5L | AWSF-32C | |
SPARK PLUG SPECIFICATIONS
| Application | Plug Gap In. (mm) | Torque Ft. Lbs (N.m) | |
|---|---|---|---|
| 1.8L | .039-.043 | 11-17 (15-23) | |
| 1.9L | .052-.056 | 7-15 (10-20) | |
| 2.2L | .039-.043 | 11-17 (15-23) | |
| 2.3L | |||
| HSC & HSC | .052-.056 | 5-10 (7-14) | |
| OHC | .030-.034 | 5-10 (7-14) | |
| 2.5L | .042-.046 | 7-15 (10-20) | |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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