ENGINE - 4.7L SERVICE INFORMATION
DESCRIPTION - 4.7L ENGINE
The 4.7 liter (287 CID) eight-cylinder engine is an 90° single overhead camshaft engine. The cast iron cylinder block is made up of two different components; the first component is the cylinder bore and upper block, the second component is the bedplate that comprises the lower portion of the cylinder block and houses the lower half of the crankshaft main bearings. The cylinders are numbered from front to rear with the left bank being numbered 1,3,5 and 7, and the right bank being numbered 2,4,6 and 8. The firing order is 1–8–4–3–6–5–7–2.
The engine serial number (1) is located at the right front side of the engine block.
REMOVAL - ENGINE
1. Remove the strut tower support (1).
2. Release fuel rail pressure (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - STANDARD PROCEDURE) then disconnect the fuel supply quick connect fitting at the fuel rail (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/QUICK CONNECT FITTING - STANDARD PROCEDURE).
3. Disconnect the battery negative and positive cables.
4. Disconnect two ground straps from the lower left hand side and one ground strap from the lower right hand side of the engine.
5. Remove the through bolt retaining nut and bolt (3) from both the left and right side engine mounts.
6. Disconnect crankshaft position sensor (1).
7. Remove exhaust crossover pipe from exhaust manifolds.
8. Remove structural cover (Refer to 9 - ENGINE/ENGINE BLOCK/STRUCTURAL COVER - REMOVAL).
9. Remove starter (4) (Refer to 8 - ELECTRICAL/STARTING/STARTER MOTOR - REMOVAL).
10. Drain cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
11. Remove torque converter bolts (3) (Automatic Transmission Only).
12. Remove transmission to engine mounting bolts (3).
13. Disconnect the engine block heater power cable from the block heater, if equipped.
14. Lower vehicle.
15. Remove throttle body resonator assembly and air inlet hose.
16. Disconnect throttle and speed control cables.
17. Disconnect tube from both the left and right side crankcase breathers (1). Remove breathers.
18. Discharge A/C system (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT - STANDARD PROCEDURE).
19. Remove A/C compressor (2) (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/A/C COMPRESSOR - REMOVAL).
20. Remove shroud, fan assembly (Refer to 7 - COOLING/ENGINE/FAN DRIVE VISCOUS CLUTCH - REMOVAL) and accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
21. Disconnect transmission oil cooler lines at the radiator.
22. Disconnect radiator upper and lower hoses.
23. Remove radiator (Refer to 7 - COOLING/ENGINE/RADIATOR - REMOVAL), A/C condenser (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/A/C CONDENSER - REMOVAL) and transmission oil cooler.
24. Remove generator (3) (Refer to 8 - ELECTRICAL/CHARGING/GENERATOR - REMOVAL).
25. Disconnect the two heater hoses from the timing chain cover and heater core.
26. Unclip (2) and remove heater hoses (1) and tubes from the intake manifold.
27. Disconnect engine harness at the following points:
- Intake air temperature (IAT) sensor (4)
- Fuel Injectors
- Throttle Position (TPS) Switch (2)
- Idle Air Control (IAC) Motor (3)
- Engine Oil Pressure Switch
- Engine Coolant Temperature (ECT) Sensor
- Manifold absolute pressure (MAP) Sensor
- Camshaft Position (CMP) Sensor
- Coil Over Plugs
28. Disconnect the vacuum lines at the throttle body and intake manifold.
29. Remove power steering pump and position out of the way.
30. Install Special Tools 8400 Lifting Studs, into the cylinder heads.
31. Install Engine Lifting Fixture Special Tool 8347 (3) following these steps.
- Holding the lifting fixture at a slight angle, slide the large bore in the front plate over the hex portion of the lifting stud.
- Position the two remaining fixture arms onto the two Special Tools 8400 Lifting Studs, in the cylinder heads.
- Pull foward and upward on the lifting fixture so that the lifting stud rest in the slotted area below the large bore.
- Secure the lifting fixture to the three studs using three 7/16 – 14 N/C locknuts.
- Make sure the lifting loop in the lifting fixture is in the last hole (closest to the throttle body) to minimize the angle of engine during removal.
32. Disconnect body ground strap (3) at the right side cowl.
33. Disconnect body ground strap (2) at the left side cowl.
NOTE: It will be necessary to support the transmission in order to remove the engine.
34. Position a suitable jack under the transmission.
35. Remove engine from the vehicle.
INSTALLATION - ENGINE
1. Position engine in the vehicle.
2. Remove jack from under the transmission.
3. Remove Engine Lifting Fixture Special Tool 8347 (3).
4. Remove Special Tools 8400 Lifting Studs.
5. Position both the left and right side engine mount brackets and install the through bolts (3) and nuts. Tighten to 95 N·m (70 ft. lbs.)
6. Install transmission to engine mounting bolts (3). Tighten the bolts to 41 N·m (30 ft. lbs.).
7. Install torque converter bolts (3).
8. Connect both left (3) and right (2) side body ground straps.
9. Position generator wiring behind the oil dipstick tube, then install the oil dipstick tube upper mounting bolt.
10. Install power steering pump.
11. Connect fuel supply line quick connect fitting (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/QUICK CONNECT FITTING - STANDARD PROCEDURE).
12. Connect the vacuum lines at the throttle body and intake manifold.
13. Connect engine harness at the following points:
- Intake Air Temperature (IAT) Sensor (4)
- Idle Air Control (IAC) Motor (3)
- Fuel Injectors
- Throttle Position (TPS) Switch (2)
- Engine Oil Pressure Switch
- Engine Coolant Temperature (ECT) Sensor
- Manifold Absolute Pressure (MAP) Sensor
- Camshaft Position (CMP) Sensor
- Coil Over Plugs
14. Position and install heater hoses (1) and tubes onto intake manifold.
15. Install the heater hoses onto the heater core and the engine front cover, and install clips (2).
16. Install generator (3) (Refer to 8 - ELECTRICAL/CHARGING/GENERATOR - INSTALLATION).
17. Install A/C condenser (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/A/C CONDENSER - INSTALLATION), radiator (Refer to 7 - COOLING/ENGINE/RADIATOR - INSTALLATION) and transmission oil cooler.
18. Connect radiator upper and lower hoses.
19. Connect the transmission oil cooler lines to the radiator.
20. Install accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION), fan assembly and shroud (Refer to 7 - COOLING/ENGINE/FAN DRIVE VISCOUS CLUTCH - INSTALLATION).
21. Install A/C compressor (2) (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/A/C COMPRESSOR - INSTALLATION).
22. Install both breathers (1). Connect tube to both crankcase breathers.
23. Connect throttle and speed control cables.
24. Install throttle body resonator assembly and air inlet hose. Tighten clamps 4 N·m (35 in. lbs.).
25. Raise vehicle.
26. Connect crankshaft position sensor (1).
27. Install starter (4) (Refer to 8 - ELECTRICAL/STARTING/STARTER MOTOR - INSTALLATION).
CAUTION: The structural cover requires a specific torque sequence. Failure to follow this sequence may cause severe damage to the cover.
28. Install structural cover (Refer to 9 - ENGINE/ENGINE BLOCK/STRUCTURAL COVER - INSTALLATION).
29. Install exhaust crossover pipe.
30. Install engine block heater power cable, If equipped.
31. Install the strut tower support (1).
32. Check and fill engine oil.
33. Recharge the A/C system (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT - STANDARD PROCEDURE).
34. Refill the engine cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).
35. Connect the battery positive and negative cables.
36. Start the engine and check for leaks.