Dodge Dakota (ND). Manual — part 831

1. Start the engine.

2. Spray a small stream of water (spray bottle) at the suspected leak area.

3. If engine RPM’S change, the area of the suspected leak has been found.

4. Repair as required.

REMOVAL

1. Disconnect negative cable from battery.

2. Remove resonator assembly and air inlet hose.

3. Disconnect throttle and speed control cables.

4. Disconnect electrical connectors for the following components: Refer to FUEL SYSTEM for component locations.

•

Manifold Absolute Pressure (MAP) Sensor

•

Intake Air Temperature (IAT) Sensor

•

Throttle Position (TPS) Sensor

•

Coolant Temperature (CTS) Sensor

•

Idle Air Control (IAC) Motor

5. Disconnect vapor purge hose, brake booster hose, speed control servo hose, positive crankcase ventilation

(PCV) hose.

6. Disconnect generator electrical connections.

7. Disconnect air conditioning compressor electrical connections.

8. Disconnect left and right radio suppressor straps.

9. Disconnect and remove ignition coil towers.

10. Remove top oil dipstick tube retaining bolt and ground strap.

11. Bleed fuel system (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - STANDARD PROCEDURE).

12. Remove fuel rail.

13. Remove throttle body assembly and mounting bracket.

14. Drain cooling system below coolant temperature level (Refer to 7 - COOLING - STANDARD PROCEDURE).

15. Remove the heater hoses from the engine front cover and the heater core.

16. Unclip and remove heater hoses and tubes from intake manifold.

17. Remove coolant temperature sensor (Refer to 7 - COOLING/ENGINE/ENGINE COOLANT TEMP SENSOR -

REMOVAL) .

18. Remove intake manifold retaining fasteners in reverse order of tightening sequence.

19. Remove intake manifold.

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ENGINE - 3.7L SERVICE INFORMATION

ND

INSTALLATION

1. Install intake manifold gaskets.

2. Install intake manifold.

3. Install intake manifold retaining bolts and tighten in

sequence shown in to 12 N·m (105 in. lbs.).

4. Install left and right radio suppressor straps.

5. Install throttle body assembly.

6. Connect throttle cable and speed control cable to

throttle body.

7. Install fuel rail.

8. Install ignition coil towers.

9. Position and install heater hoses and tubes onto

intake manifold.

10. Install the heater hoses to the heater core and

engine front cover.

11. Connect electrical connectors for the following

components:

•

Manifold Absolute Pressure (MAP) Sensor

•

Intake Air Temperature (IAT) Sensor

•

Throttle Position (TPS) Sensor

•

Coolant Temperature (CTS) Sensor

•

Idle Air Control (IAC) Motor

•

Ignition coil towers

•

Fuel injectors

12. Install top oil dipstick tube retaining bolt and ground strap.

13. Connect generator electrical connections.

14. Connect Vapor purge hose, Brake booster hose, Speed control servo hose, Positive crankcase ventilation

(PCV) hose.

15. Fill cooling system (Refer to 7 - COOLING - STANDARD PROCEDURE).

16. Install resonator assembly and air inlet hose.

17. Connect negative cable to battery.

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ENGINE - 3.7L SERVICE INFORMATION

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MANIFOLD-EXHAUST

DESCRIPTION

The exhaust manifolds( 1 and 2) are log style with a
patented flow enhancing design to maximize perfor-
mance. The exhaust manifolds are made of high sili-
con molybdenum cast iron. A perforated core graphite
exhaust manifold gasket is used to improve sealing to
the cylinder head.

The exhaust manifolds are covered by a three layer
laminated heat shield ( 1 and 3) for thermal protection
and noise reduction. The heat shields(1 and 3) are
fastened with a torque prevailing nut that is backed off
slightly to allow for the thermal expansion of the
exhaust manifold.

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ENGINE - 3.7L SERVICE INFORMATION

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REMOVAL

RIGHT EXHAUST MANIFOLD

1. Disconnect the negative cable from the battery.

2. Raise and support the vehicle.

3. Remove the bolts and nuts attaching the exhaust

pipe to the engine exhaust manifold.

4. Lower the vehicle.

5. Remove the exhaust heat shield (1).

6. Remove bolts, nuts (2) and washers attaching

manifold to cylinder head.

7. Remove manifold and gasket from the cylinder

head.

LEFT EXHAUST MANIFOLD

1. Disconnect the negative cable from the battery.

2. Raise and support the vehicle.

3. Remove the bolts and nuts attaching the exhaust

pipe to the engine exhaust manifold.

4. Lower the vehicle.

5. Remove the exhaust heat shields (1).

6. Remove bolts, nuts (2) and washers attaching

manifold to cylinder head.

7. Remove manifold and gasket from the cylinder

head.

INSTALLATION

RIGHT EXHAUST MANIFOLD

CAUTION: If the studs came out with the nuts when removing the engine exhaust manifold, install new
studs. Apply sealer on the coarse thread ends. Water leaks may develop at the studs if this precaution is
not taken.

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ENGINE - 3.7L SERVICE INFORMATION

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