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.
1998 Isuzu Trooper LSFACTORY OEM SERVICE PROCEDURE
Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | ||
|---|---|---|---|
| 2.2L - Amigo, Rodeo & Passport | |||
| Crankshaft Pulley Bolts | 14 (20) | ||
| Fuel Rail Bolts | 19 (14) | ||
| Oxygen Sensor | 40 (55) | ||
| 2.2L - Hombre & 4.3L | |||
| Accelerator Cable Bracket Bolts | 18 (25) | ||
| Accelerator Cable Bracket Nut | 22 (30) | ||
| ECT Sensor | 18 (25) | ||
| EGR Valve Assembly | |||
| 2.2L | 17 (24) | ||
| 4.3L | 18 (25) | ||
| Fuel Tank Retaining Strap Bolts | 26 (45) | ||
| Knock Sensor | 14 (19) | ||
| Oxygen Sensor | 30 (41) | ||
| Upper Intake Manifold Nuts & Bolts | 22 (30) | ||
| 3.2 & 3.5L | |||
| Coolant Pipe Rear Mounting Bolt | 12 (16) | ||
| DIS Assembly Retaining Bolts | 14 (19) | ||
| EGR Valve Assembly | 10 (14) | ||
| Engine Coolant Temperature Sensor | 22 (30) | ||
| Front Drive Shaft Yoke | 46 (62) | ||
| Fuel Tank Drain Plug | 14 (20) | ||
| Fuel Tank Retaining Bolts | 27 (36) | ||
| Knock Sensor (3.5L) | 15 (20) | ||
| Lower Intake Manifold Nuts & Bolts | 15 (20) | ||
| Oxygen Sensor | 40 (55) | ||
| Right Exhaust Shield | 27 (37) | ||
| Throttle Body Bolts | 10 (14) | ||
| Throttle Body Chamber Nuts & Bolts | 17 (24) | ||
| Upper Intake Manifold Nuts & Bolts | 15 (20) | ||
| Vehicle Speed Sensor | 12 (16) | ||
| INCH Lbs. (N.m) | |||
| 2.2L Hombre & 4.3L | |||
| Crankshaft Position Sensor Bolts | 72 (8) | ||
| Idle Air Control Valve | 27 (3) | ||
| Ignition Coil Assembly Attaching Bolts | 12 (1.3) | ||
| Ignition Coil(s) Retaining Screws | 40 (4.5) | ||
| Injector Retainer Bracket Attaching Screws | 31 (3.5) | ||
| Throttle Position Sensor Attaching Screws | 27 (3) | ||
| 2.2L Amigo, Rodeo & Passport | |||
| Camshaft Position Sensor Bolts | 72 (8) | ||
| Crankshaft Position Sensor Bolts | 72 (8) | ||
| Idle Air Control Valve | 9 (1) | ||
| 3.2L & 3.5L | |||
| Camshaft Position Sensor Bolts | 78 (9) | ||
| Crankshaft Position Sensor Bolts | 78 (9) | ||
| Fuel Pressure Regulator Attaching Screw | |||
| 3.2L | 60 (6.5) | ||
| 3.5L | 26 (3) | ||
| Fuel Rail Bolts | 75 (8) | ||
| Idle Air Control Valve | 9 (1) | ||
| Knock Sensor (3.2L) | 62 (6.7) | ||
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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