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.
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HOMESERVICE MANUALSPONTIAC1990GRAND PRIX STE, 3.1 VREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESPECIFICATIONSENGINE CONTROLS - SPECIFICATIONS - 4-CYLSPARK PLUG SPECIFICATIONSNOTES
1990 Pontiac Grand Prix STE, 3.1 V
Spark Plug Specifications: Notes
1990 Pontiac Grand Prix STE, 3.1 VSECTION Notes
SPARK PLUG TYPE
| Application | AC |
|---|---|
| 2.0L (VIN K & M) | R44XLS |
| 2.2L (VIN G) | R44LTSM |
| 2.3L (VIN A & D) | FR3LS |
| 2.5L (VIN R & U) | R43TS6 |
SPARK PLUG GAP & TORQUE SPECIFICATIONS
| Application | Gap: In. (mm) | Torque: Ft. Lbs. (N.m) |
|---|---|---|
| 2.0L (VIN K) | .045 (1.14) | 15 ( 20) |
| 2.0L (VIN M) | .035 (0.89) | 15 (20) |
| 2.2L (VIN G) | .035 (0.89) | 11 (15) |
| 2.3L (VIN A & D) | .035 (0.89) | 17 (23) |
| 2.5L (VIN R) | .060 (1.52) | 20 (27) |
| 2.5L (VIN U) | .060 (1.52) | 17 (23) |
RENDER: 1.0x
NO RELATED
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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.