2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Torque Specification

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

1GR-FE: 

TORQUE SPECIFICATION - 1GR-FE

Part Tightened N.m kgf.cm ft.lbf
Spark plug x Cylinder head 20 204 14
Ignition coil x Cylinder head cover 10 102 7
WT sensor x Timing chain cover sub-assy 8.0 82 71 in.lbf
V-bank cover x Intake air surge tank sub-assy and Air cleaner assy 7.5 76 66 in.lbf
Crankshaft position sensor x Cylinder block 10 102 7
V-ribbed belt tensioner and Cooler compressor assy 25 255 18
Engine under cover assy rear x Frame assy 29 296 21

2UZ-FE: 

TORQUE SPECIFICATION - 2UZ-FE

Part Tightened N.m kgf.cm ft.lbf
Spark plug x Cylinder head 20 204 15
Ignition coil (with igniter) x Cylinder head cover 7.5 76 66 in.lbf
Camshaft position sensor x LH cylinder head 7.5 80 66 in.lbf
Crankshaft position sensor x Oil pump 6.5 65 58 in.lbf
Factory Service Tools

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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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