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 PERFORMANCEAPPLICATIONENGINE/VIN IDIDENTIFICATION1990 MODEL COVERAGE & IDENTIFICATION
1990 Pontiac Grand Prix STE, 3.1 V
1990 Model Coverage & Identification
1990 Pontiac Grand Prix STE, 3.1 VSECTION 1990 Model Coverage & Identification
1990 BODY, ENGINE, FUEL SYSTEM & IGNITION SYSTEM APPLICATIONS
| Model | Body | Engine (1) | Eng. ID | Fuel | Ignition | ||
|---|---|---|---|---|---|---|---|
| Beretta | L | 2.2L (LH3) | G | TBI | Magnetic | ||
| 2.3L (LG0) | A | PFI | Magnetic | ||||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| Bonneville | H | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Brougham | D | 5.0L (LV2) | Y | Carb. | Magnetic | ||
| 5.7L (LO5) | 7 | TBI | Magnetic | ||||
| Camaro | F | 3.1L (LH0) | T | PFI | Magnetic | ||
| 5.0L (LB9) | F | PFI | Magnetic | ||||
| 5.0L (LO3) | E | TBI | Magnetic | ||||
| 5.7L (L98) | 8 | PFI | Magnetic | ||||
| Caprice | B | 4.3L (LB4) | Z | TBI | Magnetic | ||
| 5.0L (LV2) | Y | Carb. | Magnetic | ||||
| 5.0L (LO3) | E | TBI | Magnetic | ||||
| Cavalier | J | 2.2L (LM3) | G | TBI | Magnetic | ||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| Celebrity | A | 2.5L (LR8) | R | TBI | Magnetic | ||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| Century | A | 2.5L (LR8) | R | TBI | Magnetic | ||
| 3.3L (LG7) | N | PFI | Magnetic | ||||
| Corsica | L | 2.2L (LM3) | G | TBI | Magnetic | ||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| Corvette | Y | 5.7L (L98) | 8 | PFI | Magnetic | ||
| Custom Cruiser | B | 5.0L (LV2) | Y | Carb. | Magnetic | ||
| Cutlass Calais | N | 2.3L (LG0) | A | PFI | Magnetic | ||
| 2.3L (LD2) | D | PFI | Magnetic | ||||
| 2.5L (L68) | U | TBI | Hall Effect | ||||
| 3.3L (LG7) | N | PFI | Hall Effect | ||||
| Cutlass Ciera | A | 3.3L (LG7) | N | PFI | Hall Effect | ||
| Cutlass Cruiser | A | 2.5L (LR8) | R | TBI | Magnetic | ||
| Cutlass Supreme | W | 2.3L (LD2) | D | PFI | Magnetic | ||
| 2.3L (LG0) | A | PFI | Magnetic | ||||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| Delta 88 | H | 3.8L (LN3) | C | SFI | Hall Effect | ||
| DeVille | C | 4.5L (LW2) | 3 | SFI | Magnetic W/ Hall effect Camshaft Sensor | ||
| Eldorado | E | 4.5L (LW2) | 3 | SFI | Magnetic W/ Hall effect Camshaft Sensor | ||
| Electra | C | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Estate Wagon | B | 5.0L (LV2) | Y | Carb. | Magnetic | ||
| Firebird | F | 3.1L (LH0) | T | PFI | Magnetic | ||
| 5.0L (LB9) | F | PFI | Magnetic | ||||
| 5.0L (LO3) | E | TBI | Magnetic | ||||
| 5.7L (L98) | 8 | PFI | Magnetic | ||||
| Fleetwood | C | 4.5L (LW2) | 3 | SFI | Magnetic W/ Hall effect Camshaft Sensor | ||
| Grand Am | N | 2.3L (LG0) | A | PFI | Magnetic | ||
| 2.3L (LD2) | D | PFI | Magnetic | ||||
| 2.5L (L68) | U | TBI | Magnetic | ||||
| Grand Prix | W | 2.3L (LD2) | D | PFI | Magnetic | ||
| 3.1L(LG5)Turbo | V | PFI | Magnetic | ||||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| LeSabre | H | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Lumina | W | 2.5L (LR8) | R | TBI | Magnetic | ||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
| Ninety-Eight | C | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Park Avenue | C | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Reatta | E | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Riviera | E | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Regal | W | 3.1L (LH0) | T | PFI | Magnetic | ||
| Seville | K | 4.5L (LW2) | 3 | SFI | Magnetic W/ Hall effect Camshaft Sensor | ||
| Skylark | N | 2.3L (LD2) | D | PFI | Magnetic | ||
| 2.5L (L68) | U | TBI | Magnetic | ||||
| 3.3L (LG7) | N | PFI | Hall Effect | ||||
| Sunbird | J | 2.0L (LT2) | K | TBI | Magnetic | ||
| 2.0L(LT3)Turbo | M | PFI | Magnetic | ||||
| Toronado | E | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Touring Sedan | C | 3.8L (LN3) | C | SFI | Hall Effect | ||
| Trofeo | E | 3.8L (LN3) | C | SFI | Hall Effect | ||
| 6000 | A | 2.5L (LR8) | R | TBI | Magnetic | ||
| 3.1L (LH0) | T | PFI | Magnetic | ||||
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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.