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Some customers may experience a ticking or tapping–type noise from the engine area at 2000 – 2500 rpm during acceleration that is most noticeable after a cold soak. New exhaust manifolds have been developed to minimize this condition. Parts Information PREVIOUS PART NUMBER 17140–0P010 17150–0P010 17173–0P010 CURRENT PART NUMBER 17140–0P070 17150–0P070 Same PART NAME Manifold Assembly, Exhaust, RH Manifold Assembly, Exhaust, LH Gasket, Exhaust Manifold QTY 1 1 2 Repair Procedure Replace both LH and RH exhaust manifolds. Refer to the Technical Information System (TIS), 2005 or 2006 model year Tacoma Repair Manual: 1GR–FE Engine Mechanical: Partial Engine Assy: Replacement. Warranty Information OP CODE EG5027 Applicable Warranty*: The Remove & Reinstall (R & R) of the Exhaust Manifold (P/N 17140–0P010 and 17150–0P010) due to the attached Catalytic Converter, is covered under the Toyota Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle’s in–service date. DESCRIPTION R & R Exhaust Manifolds TIME 1.6 OFP 17140–0P010 T1 T2 91 41

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1. Rotate crankshaft (6303) to zero degrees top dead center (TDC) on the compression stroke. 2. Disconnect battery ground cable (14301). 3. Drain engine cooling system. Refer to Section 03-03. 4. Remove air cleaner outlet tube (9B659) to throttle body (9E926) . Refer to Section 03-12. 5. Mark and remove vacuum lines to upper intake manifold (9424). 6. Disconnect EGR backpressure transducer hose from EGR valve to exhaust manifold tube (9D477) , loosen lower EGR valve to exhaust manifold tube nut and rotate EGR valve to exhaust manifold tube away from EGR valve (EGR valve) (9D475) . 7. Disconnect the throttle position sensor (TP sensor) (9B989), idle air control valve (IAC valve) (9F715) , EGR backpressure transducer and EGR vacuum regulator solenoid electrical connectors. 8. WARNING: COVER FUEL PRESSURE RELIEF VALVE (9H321) WITH SHOP CLOTH TO PREVENT ACCIDENTAL FUEL SPRAY INTO EYES. Relieve pressure at the fuel pressure relief valve . Refer to Section 03-04A. 9. Remove fuel tube safety clips. 10. CAUTION: Cover fuel tube ends with clean shop cloths to prevent dirt from entering opening. Disconnect fuel tubes (9291). Refer to Section 10-01. 11. Remove upper intake manifold as described. Discard old intake manifold upper gasket (9H486) . 12. Disconnect engine control sensor wiring retainers from rocker arm cover stud bolts and each fuel injector, and position the engine control sensor wiring (12A581) out of the way. 13. NOTE: Fuel injectors and fuel injection supply manifold (9F792) may be removed with lower intake manifold as an assembly. Remove fuel injection supply manifold and fuel injector. 14. Remove ignition wires from spark plugs (12405) . Refer to Section 03-07A. Remove wire harness retainers from valve cover retaining stud bolts. 15. Remove ignition coil (12029) and bracket from LH front cylinder head (6049) and set aside. Refer to Section 03-07A. 16. Disconnect upper radiator hose (8260) and heater water hoses (18472) . 17. Remove camshaft position sensor (CMP sensor) (6B288) and housing. Refer to Section 03-14. 18. Disconnect engine control sensor wiring from engine coolant temperature sensor (ECT sensor) (12A648) and the water temperature indicator sender unit (10884) . 19. If LH (front) cylinder head is being removed, perform the following: Disconnect generator electrical connectors. Remove drive belt (8620). Refer to Section 03-05. Remove drive belt tensioner (6B209). Refer to Section 03-05. Remove generator brace and generator (GEN) (10346). Remove power steering support bracket and power steering pump (3A674) as an assembly and set aside in a position to prevent fluid from leaking out. Remove oil level indicator tube retaining nut from exhaust manifold stud bolt. Rotate or remove oil level indicator tube (6754) from exhaust manifold (9430) . 20. If RH (rear) cylinder head is being removed, perform the following:

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Removal 1. Disconnect the battery ground cable. For additional information, refer to Section 414-01. 2. Drain the engine cooling system. For additional information, refer to Section 303-03. 3. Remove the air cleaner outlet tube. For additional information, refer to Section 303-12. 4. Disconnect the fuel line. For additional information, refer to Section 310-00A or Section 310-00B. 5. Remove the wiper arm and pivot shaft. For additional information, refer to Section 501-16. 6. Remove the drive belt. For additional information, refer to Section 303-05. 7. Raise the vehicle on a hoist. For additional information, refer to Section 100-02. 8. Disconnect the electrical connector at the crankshaft position (CKP) sensor. Disconnect the pin-type retainer from the A/C compressor bracket. 9. Disconnect the electrical connector from the A/C compressor. 10. Remove the oil bypass filter. 11. Disconnect the oil pressure sensor electrical connector and the power steering pressure (PSP) switch electrical connector. 12. Disconnect the exhaust gas recirculation (EGR) tube from the exhaust manifold.

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All vehicles 5. Remove the radiator. For additional information, refer to Section 303-03A. 6. If equipped, remove the A/C condenser core. For additional information, refer to Section 412-03. 7. If equipped, disconnect the climate control vacuum connector. All except supercharged vehicles 8. Remove the bolts and position the power steering reservoir aside. All vehicles 9. Disconnect the exhaust manifold to exhaust gas recirculation (EGR) valve tube lower fitting and remove the tube. 10. Disconnect the generator electrical connections and remove the generator. 11. NOTE: Battery removed for clarity. Disconnect the 38-pin, 42-pin and 16-pin electrical connectors. 12. Disconnect the electrical connector and remove the connector from the bracket. 13. Remove the bolts and the connector bracket cover. 14. Remove the 38-pin connector from the bracket. 15. Disconnect the starter relay electrical connections and position the cables aside. 16. Remove the bolts and connector bracket. 17. Compress the holding tabs and disconnect the heater hoses from the heater core. 18. Raise and support the vehicle. For additional information, refer to Section 100-02. 19. If equipped, remove the skid plate. 1. Remove the bolts. 2. Remove the skid plate. 20. Remove the A/C compressor, if equipped. For additional information, refer toSection 412-03. 21. Remove the drain plug and drain the engine oil. All except supercharged vehicles 22. Remove the starter motor. For additional information, refer to Section 303-06. 23. If equipped, install the A/C line (muffler) bracket. Manual transmission vehicles 24. Remove the clutch disc and pressure plate. For additional information, refer to Section 308-01. Automatic transmission vehicles 25. Remove the transmission fluid cooler tubes from the block mounted clip. 26. Remove the bolts and the flexplate inspection cover. 27. Remove the cylinder block opening cover. 28. Remove the torque converter-to-flexplate nuts. Discard the nuts. 29. NOTE: The upper two transmission-bolts will be removed later. Remove the lower five transmission-to-engine bolts. 30. Remove the nut and the transmission oil filler tube.

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Installation All engines 1. NOTE: Lubricate the new O-ring seals with clean engine oil to aid installation. Install new O-ring seals, as required. 2. Install the fuel injectors into the fuel injection supply manifold. 3. Position the fuel injection supply manifold and install the four bolts. 4. Connect the evaporative emission canister purge valve hose and the EGR valve vacuum hose. 4.6L engines 5. Install the exhaust manifold to EGR valve tube. 6. Connect the differential pressure feedback EGR system electrical connector. 5.4L engines 7. Install the exhaust manifold to EGR valve tube and connect the differential pressure feedback EGR system hoses. All engines 8. NOTE: 4.6L shown, 5.4L similar. Install the positive crankcase ventilation (PCV) hose. 9. Install the crankcase ventilation tube. 4.6L engines 10. Connect the brake booster vacuum tube and bracket and install the nut. 5.4L engines 11. Install the brake booster vacuum tube and bracket. 12. Connect the water heater inlet tube hose. 1. Connect the water heater inlet tube hose. 2. Compress and install the hose clamp. All engines 13. Connect the eight fuel injector electrical connectors. 14. Connect the eight ignition coil electrical connectors. 15. Connect the fuel tubes. For additional information, refer toSection 310-00A. 16. Connect the fuel pressure regulator valve vacuum hose.