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.
2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE
Torque Specifications
3UZ-FE ENGINE CONTROL SYSTEM - TORQUE SPECIFICATIONS
| Part Tightened | N*m | kgf*cm | ft.*lbf |
|---|---|---|---|
| Camshaft timing oil control valve assembly x Cylinder head cover | 8.5 | 87 | 75 in.*lbf |
| V-bank cover x Engine | 5.0 | 51 | 44 in.*lbf |
| Intake air connector pipe x Engine | 5.0 | 51 | 44 in.*lbf |
| No. 1 air cleaner inlet x Body | 5.0 | 51 | 44 in.*lbf |
| No. 3 timing belt cover sub-assembly LH x Engine | 7.5 | 76 | 66 in.*lbf |
| Intake manifold x Cylinder head | 18 | 184 | 13 |
| Purge VSV x Intake manifold | 18 | 184 | 13 |
| No. 1 V-bank cover bracket x Intake manifold | 7.5 | 76 | 66 in.*lbf |
| No. 2 V-bank cover bracket x Intake manifold | 18 | 184 | 13 |
| No. 3 V-bank cover bracket x Intake manifold | 7.5 | 76 | 66 in.*lbf |
| No. 4 V-bank cover bracket x Intake manifold | 18 | 184 | 13 |
| VVT sensor x Cylinder head cover | 7.5 | 76 | 66 in.*lbf |
| Crankshaft position sensor x Cylinder block | 6.5 | 66 | 57 in.*lbf |
| Engine coolant temperature sensor x Water inlet | 20 | 204 | 15 |
| Throttle body x Intake manifold | 18 | 184 | 13 |
| Knock sensor x Cylinder block sub-assembly | 20 | 204 | 15 |
| ECM x ECM box | 5.5 | 56 | 49 in.*lbf |
| ECM box cover x ECM box | 5.0 | 51 | 44 in.*lbf |
| Accelerator pedal rod x Body | 5.0 | 51 | 44 in.*lbf |
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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