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.
2011 Acura MDXFACTORY OEM SERVICE PROCEDURE
Fuel and Emissions
FUEL AND EMISSIONS SPECIFICATIONS CHART
| Location | Item | Remark | Torque |
|---|---|---|---|
| Fuel and emissions | A/F sensor | 44 N.m (4.5 kgf.m, 33 lbf.ft) | |
| ECT sensor 1 | 12 N.m (1.2 kgf.m, 8.7 lbf.ft) | ||
| ECT sensor 2 | 12 N.m (1.2 kgf.m, 8.7 lbf.ft) | ||
| EGR pipe bolts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| EGR pipe nuts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| EGR valve nuts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| EVAP canister cover bolts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| Fuel joint hose bolt | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| Fuel tank locknut | 70 N.m (7.1 kgf.m, 51 lbf.ft) | ||
| Fuel tank support straps bolts | 64 N.m (6.5 kgf.m, 47 lbf.ft) | ||
| Knock sensor | 31 N.m (3.2 kgf.m, 23 lbf.ft) | ||
| Rocker arm oil pressure switch | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| Secondary HO2S | 44 N.m (4.5 kgf.m, 33 lbf.ft) | ||
| Throttle body bolts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| Throttle body nuts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| Under floor TWC self-locking nuts (front side) | Use new nuts | 33 N.m (3.4 kgf.m, 25 lbf.ft) | |
| Under floor TWC self-locking nuts (rear side) | Use new nuts | 54 N.m (5.5 kgf.m, 40 lbf.ft) | |
| Warm up TWC bracket bolts | 22 N.m (2.2 kgf.m, 16 lbf.ft) | ||
| Warm up TWC (front bank) upper self-locking nuts | Use new nuts | 31 N.m (3.2 kgf.m, 23 lbf.ft) | |
| Warm up TWC (rear bank) upper self-locking nuts | Use new nuts | 31 N.m (3.2 kgf.m, 23 lbf.ft) | |
| *1: Parts to be tightened in a particular order. *2: Follow the S/M procedures closely for torque, sequence, and special steps. |
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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.