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.
2005 Toyota Sienna CEFACTORY OEM SERVICE PROCEDURE
Service Data
Ignition Service Data
| Spark plug | ||
| Recommended spark plug | DENSO made | SK20R11 |
| NQK made | IFR6A11 | |
| Electrode gap | Correct electrode gap for new spark plug | 1.0 -- 1.1 mm (0.039 -- 0.043 in.) |
| Maximum electrode gap for used spark plug | 1.3 mm (0.051 in.) | |
| VVT sensor | ||
| Resistance | Cold | 835 to 1, 400 Ω |
| Hot | 1, 060 -- 1, 645 Ω | |
| Crankshaft position sensor | ||
| Resistance | Cold | 1, 630 -- 2, 740 Ω |
| Hot | 2, 065 -- 3, 225 Ω |
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.