sensor DODGE RAM SRT-10 2006 Service Repair Manual

6. Remove power steering pump (Refer to 19 -
STEERING/PUMP - REMOVAL).
7. Remove access plugs (1,2) from left and right cyl-
inder heads for access to chain guide fasteners.
8. Remove the oil fill housing to gain access to the
right side tensioner arm fastener.
9. Remove crankshaft damper (Refer to 9 - ENGINE/
ENGINE BLOCK/VIBRATION DAMPER -
REMOVAL) and timing chain cover (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
10. Collapse and pin primary chain tensioner (1).
CAUTION: Plate behind left secondary chain ten-
sioner could fall into oil pan. Therefore, cover pan
opening.
11. Remove secondary chain tensioners.
12. Remove camshaft position sensor (1) from right
cylinder head.

SOLENOID-MDS
DESCRIPTION
The Multi Displacement System selectively deactivates cylinders 1,4,6,and 7, to improve fuel economy. It has two
modes of operation :
8 cylinders for acceleraton and heavy loads.
4 cylinders for cruising and city traffic.
The main components of the Multi Displacement System are :
Unique MDS camshaft.
Deactivating roller tappets.
4 control valves/solenoids.
control valve/solenoid wiring harness.
oil temp sensor.
OPERATION
Cylinder Deactivation
Trap an exhaust charge from a normal combustion event
Normal combustion event
Don’t open the exhaust valve
Don’t open the intake valve
Piston is an air spring
Cylinders deactivated in firing sequence
Cylinder Reactivation
Open the exhaust valve
Empty the cylinder
Open the intake valve
Normal combustion event
Cylinders reactivated in firing sequence
DIAGNOSIS AND TESTING
The Multi Displacement System has the following detectible issues:
Solenoid circuit
Fail to deactivate a cylinder(s)
Fail to reactivate a cylinder(s)
Low oil pressure
CONDITION POSSIBLE CAUSES CORRECTION
MDS does not activate 1. Low oil pressure 1. Check for proper oil pressure
2. Bad oil temp sensor 2. Replace oil temp sensor
3. Malfunctioning MDS Solenoid 3. Replace Solenoid
4. Malfunctioning MDS Tappet 4. Replace Tappet
MDS Does Not Deactivate 1. Low oil pressure 1. Check for proper oil pressure
2. Bad oil temp sensor 2. Replace oil temp sensor
3. Malfunctioning MDS Solenoid 3. Replace Solenoid
4. Malfunctioning MDS Tappet 4. Replace Tappet

MANIFOLD - INTAKE
DESCRIPTION
The intake manifold is made of a composite material and features long runners which maximizes low end torque.
The intake manifold uses single plane sealing which consist of eight individual press in place port gaskets to prevent
leaks.
DIAGNOSIS AND TESTING - INTAKE MANIFOLD LEAKAGE
An intake manifold air leak is characterized by lower than normal manifoldvacuum. Also, one or more cylinders may
not be functioning.
WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING. DO NOT STAND IN ADIRECT LINE
WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR THE FAN. DO NOT WEAR
LOOSE CLOTHING.
1. Start the engine.
2. Spray a small stream of water at the suspected leak area.
3. If a change in RPM is observed 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 electrical connectors for the following components:
Manifold Absolute Pressure (MAP) Sensor
Intake Air Temperature (IAT) Sensor
Throttle Position (TPS) Sensor
Coolant Temperature (CTS) Sensor
4. Disconnect brake booster hose and positive crankcase ventilation (PCV)hose.
5. Remove generator and set aside.
NOTE: It is not necessary to remove lines or remove freon from A/C compressor.
6. Remove air conditioning compressor and set aside..
7. Bleed fuel system (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - STANDARD PROCEDURE).
8. Remove intake manifold retaining fasteners in a crisscross pattern starting from the outside bolts and ending at
themiddlebolts.
9. Remove intake manifold and IAFM as an assembly.
CLEANING
NOTE: There is NO approved repair procedure for the intake manifold. If severe damage is found during
inspection, the intake manifold must be replaced.
Before installing the intake manifoldthoroughly clean the mating surfaces. Use a suitable cleaning solvent, then air
dry.

INSPECTION
1. Inspect the intake sealing surface for cracks, nicks and distortion.
2. Inspect the intake manifold vacuum hose fittings for looseness or blockage.
3. Inspect the manifold to throttlebody mating surface for cracks, nicks and distortion.
INSTALLATION
1. Install intake manifold seals.
2. Position intake manifold and IAFM.
3. Install intake manifold retaining bolts, and tighten in sequence from the middle bolts towards the outside in a
crisscross pattern. Torque fasteners to 12 Nꞏm (105 in. lbs.).
4. 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
5. Install generator.
6. Install A/C compressor.
7. Connect Brake booster hose and Positive crankcase ventilation (PCV) hose.
8. Install resonator assembly and air inlet hose.
9. Connect negative cable to battery.

EXCESSIVE BLACK SMOKE
POSSIBLE CAUSE CORRECTION
Engine Control Module (ECM) not calibrated or ECM
has incorrect calibration.Refer to Powertrain Diagnostic Procedures Information.
Exhaust system restriction is above specifications. Check exhaust pipesfor damage/restrictions. Repair as
necessary.
Fuel grade is not correct or fuel quality is poor. Temporarily change fuel brands and note condition.
Change brand if necessary.
Fuel injection pump malfunctioning. A DTC may have been set. If so, refer toPowertrain
Diagnostic Procedures Information.
Fuel injector malfunctioning. A DTC may have been set. Perform “Cylinder
Performance Test
orCylinder Cutout Testusing DRB
scan tool to isolate individual cylinders. Also refer to
Powertrain Diagnostic Procedures Information and, to
(Refer to 14 - FUEL SYSTEM/FUEL INJECTION/FUEL
INJECTOR - DIAGNOSIS AND TESTING).
Fuel return system restricted. Check fuel return lines for restriction (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY - DIAGNOSIS AND
TESTING).
Intake manifold restricted. Remove restriction.
Manifold Air Pressure (Boost) Sensor or sensor circuit
malfunctioning.A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information.
Raw fuel in intake manifold. Fuel injectors leaking on engine shutdown. DoFuel
Injector Test (Refer to 14 - FUEL SYSTEM/FUEL
INJECTION/FUEL INJECTOR - DIAGNOSIS AND
TESTING).
Turbocharger air intake restriction. Remove restriction.
Turbocharger damaged. (Refer to 11 - EXHAUST SYSTEM/TURBOCHARGER
SYSTEM/TURBOCHARGER - INSPECTION).
Turbocharger has excess build up on compressor
wheel and/or diffuser vanes.(Refer to 11 - EXHAUST SYSTEM/TURBOCHARGER
SYSTEM/TURBOCHARGER - CLEANING).
Turbocharger wheel clearance out of specification. (Refer to 11 - EXHAUSTSYSTEM/TURBOCHARGER
SYSTEM/TURBOCHARGER - INSPECTION).
EXCESSIVE WHITE SMOKE
POSSIBLE CAUSE CORRECTION
Air in fuel supply: Possible leak in fuel supply side.(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL
TRANSFER PUMP - DIAGNOSIS AND TESTING).
Coolant leaking into combustion chamber. Do pressure test of cooling system (Refer to 7 -
COOLING - DIAGNOSIS AND TESTING).
Diagnostic Trouble Codes (DTC’s) active or multiple,
intermittent DTC’s.Refer to Powertrain Diagnostic Procedures Information.
In very cold ambient temperatures, engine block heater
is malfunctioning (if equipped).(Refer to 7 - COOLING/ENGINE/ENGINE BLOCK
HEATER - REMOVAL).
Engine coolant temperature sensor malfunctioning. A DTC should have beenset. Refer to Powertrain
Diagnostic Procedures Information. Also check
thermostat operation (Refer to 7 - COOLING/ENGINE/
ENGINE COOLANT THERMOSTAT - DIAGNOSIS AND
TESTING).
Engine Control Module (ECM) not calibrated or has
incorrect calibration.A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information.

EXCESSIVE WHITE SMOKE
POSSIBLE CAUSE CORRECTION
Fuel filter plugged. Refer to Powertrain Diagnostic Manual for fuel system
testing.
Fuel grade not correct or fuel quality is poor. Temporarily change fuel brands and note condition.
Change brand if necessary.
Fuel heater element or fuel heater temperature sensor
malfunctioning. This will cause wax type build-up in fuel
filter.Refer to Fuel Heater Testing (Refer to 14 - FUEL
SYSTEM/FUEL DELIVERY/FUEL HEATER -
DIAGNOSIS AND TESTING).
Fuel injector malfunctioning. A DTC should have been set. Perform “Cylinder
Performance Test
orCylinder cutout Testusing DRB
scan tool to isolate individual cylinders. Also refer to
Powertrain Diagnostic Procedures Information and,
(Refer to 14 - FUEL SYSTEM/FUEL INJECTION/FUEL
INJECTOR - DIAGNOSIS AND TESTING).
Fuel injector hold-downs loose. Torque to specifications.
Fuel injector protrusion not correct. Check washer (shim) at bottom of fuel injector for
correct thickness. (Referto 14 - FUEL SYSTEM/FUEL
INJECTION/FUEL INJECTOR - INSTALLATION)
Fuel injection pump malfunctioning. A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information.
Fuel supply side restriction. Refer to Powertrain Diagnostic Manual for fuel system
testing.
Fuel transfer (lift) pump malfunctioning. A DTC may have been set. Refer toPowertrain
Diagnostic Procedures Information.
Intake/Exhaust valve adjustments not correct (too tight). (Refer to 9 - ENGINE/CYLINDER HEAD/INTAKE/
EXHAUST VALVES & SEATS - STANDARD
PROCEDURE).
Intake manifold air temperature sensor malfunctioning. A DTC should havebeen set. Refer to Powertrain
Diagnostic Procedures Information.
Intake manifold heater circuit not functioning correctly in
cold weather.A DTC should have been set. Refer to Powertrain
Diagnostic Procedures Information. Also check heater
elements for correct operation.
Intake manifold heater elements not functioning
correctly in cold weather.A DTC should have been set if heater elements are
malfunctioning. Refer to Powertrain Diagnostic
Procedures Information.
Internal engine damage (scuffed cylinder). Analyze engine oil and inspect oil filter to locate area of
probable damage.
Restriction in fuel supply side of fuel system. Refer to Powertrain Diagnostic Manual for fuel system
testing.
EXCESSIVE BLUE SMOKE
POSSIBLE CAUSE CORRECTION
Dirty air cleaner or restricted turbocharger intake duct. Check Filter Minder
at air filter housing. (Refer to 9 -
ENGINE/AIR INTAKE SYSTEM/AIR CLEANER
ELEMENT - REMOVAL).
Air leak in boost system between turbocharger
compressor outlet and intake manifold.Service air charge system..
Obstruction in exhaust manifold. Remove exhaust manifold and inspect forblockage
(Refer to 9 - ENGINE/MANIFOLDS/EXHAUST
MANIFOLD - REMOVAL).

34. Remove lower fan shroud bracket (3) from
engine.
35. Remove upper fan shroud brackets from engine.
36. Disconnect engine block heater connector.
37. Disconnect A/C compressor and pressure sensor
electrical connectors.
38. Remove the passenger battery ground cable from
the engine block. Remove the driver side battery
ground cable from the engine block.
39. Remove power steering pump from engine by
removing 3 bolts.
40. Disconnect the ECM power connector.
41. Disconnect the ECM ground wire from the hydro-
form screw.
42. Disconnect the fuel supply and return hoses.
43. Remove the cylinder head cover (1). (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) -
REMOVAL).
44. Disconnect the wire harnesses from the injectors (3).
45. Remove the cylinder head cover carrier gasket (2).

19. Connect fuel supply and return hoses.
20. Connect ECM ground to hydroform screw. Con-
nect ECM power connector.
21. Install the power steering pump.
22. Install the damper and speed indicator ring.
Torque to 40 Nꞏm (30 ft. lb) plus 60 degrees.
23. Install lower fan shroud bracket (3). Torque to 24
Nꞏm (18 ft. lb).
24. Install upper fan shroud brackets, but do not
tighten fasteners at this time.
25. Connect the engine block heater connection.
26. Connect the A/C compressor and pressure sensor
connectors
27. Install the charge air cooler (2). Install and tighten
the charge air cooler mounting bolts (1) to 2 Nꞏm
(17 in. lbs).
28. Connect the charge air cooler tubes (4). Torque all
clampsto8Nꞏm(72in.lbs).

CYLINDER HEAD
DESCRIPTION
The cylinder head is constructed of cast iron and is a one piece cross flow design with four valves per cylinder. The
arrangement of two intake and two exhaust valves per cylinder allows for a centrally located injector. The cylinder
head also includes an integral intake manifold, an integral thermostat housing, and a longitudal fuel return rifle,
which exits at the rear of the head. The 24 valve design also includes integrally cast valve guides and hardened
intake and exhaust valve seat inserts.
REMOVAL
1. Disconnect battery negative cables.
2. Raise vehicle on hoist.
3. Drain engine coolant.
4. Disconnect exhaust pipe from turbocharger elbow.
5. Remove turbocharger drain tube bolts at turbocharger. Cap off ports to prevent dirt or foreign material from enter-
ing.
6. Lower vehicle.
7. Disconnect air inlet temperature/pressure sensor.
8. Remove air cleaner housing and snorkel from the vehicle. Cap off turbocharger air inlet to prevent intrusion of
dirt or foreign material.
9. Disconnect cab heater core supply and return hoses from the cylinder head and heater pipe.
10. Disconnect turbocharger oil supply line at the turbocharger end. Cap off open ports to prevent intrusion of dirt
or foreign material.
11. Remove exhaust manifold-to-cylinder head bolts, spacers, heat shield, retention straps, and cab heater plumb-
ing. Remove exhaust manifold and turbocharger from the vehicle as an assembly.
12. Remove cooling fan/drive/shroud assembly. (Refer to 7 - COOLING/ENGINE/RADIATOR FAN - REMOVAL)
13. Remove accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
14. Remove cooling fan support from cylinder block.
15. Remove upper generator bolt, loosen lower generator bolt, and rotate generator away from cylinder head.
16. Disconnect radiator upper hose from the thermostat housing.
17. Disconnect the Intake Air Temperature/Manifold Air Pressure, and Coolant Temperature sensor connectors.
18. Remove the engine harness to cylinder head attaching bolts and P-clipsat front of head.
19. Remove the intake air grid heater wires from the grid heater.
20. Remove engine oil level indicator tube attaching bolt at fuel filter housing bracket and inlet air connection..
21. Remove the charge air cooler-to-air inlet housing pipe.
22. Remove the engine wire harness attaching bolt and wire harness push-infastener from air inlet housing.
23. Remove the air inlet housing and intake grid heater from the intake manifold cover.
24. Remove the two grid heater harness-to-cylinder head attaching bolts at front of cylinder head.
NOTE: Extreme care should be used to keep dirt/debris from entering the fuel lines. Plastic caps should be
used on the ends of the fuel lines.
25.Remove the high pressure pump to fuel rail fuel line as follows:
a. Loosen fuel line nuts at fuel pump and at fuel rail.
b. Use a back-up wrench on the fitting at the fuel pump to keep it from loosening.
26. Remove the fuel rail to cylinder head fuel lines as follows:
a. Loosen No. 6 high pressure fuel line shield and position out of way.
b. Loosen the fuel line nuts at the fuel rail and at the cylinder head. Use a back-up wrench on HPC nut.
c. Remove the fuel line bracket bolts at the intake manifold cover.

27. Remove the engine lift bracket from the rear of the cylinder head.
28. Remove the fuel rail as follows:
a. Remove fuel rail pressure sensor connector.
b. Remove banjo fitting at pressure limiting valve.
c. Remove fuel rail bolts and fuel rail.
29. Remove the low pressure lines as follows:
a. Remove the fuel drain banjo fitting on the front side of fuel filter housing.
b. Remove the fuel drain banjo fitting on rear side of fuel filter housing.
c. Remove the fuel drain line support bracket on rear side of filter housing.
d. Disconnect fuel drain hose.
e. Remove banjo fitting at bottom of fuel filter housing.
f. Disconnect fuel supply hose at fuel filter.
30. Disconnect fuel heater, and water in fuel sensor.
31. Remove the fuel filter assembly-to-cylinder head bolts and remove filter assembly from vehicle.
32. Remove wire harness P-clip from cylinder head (located behind filter housing).
NOTE: For early builds. Verify that the cylinder head cover ground spring is retained in the cylinder head
cover.
33. Remove the cylinder head cover (Refer to 9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S) -
REMOVAL).
34.For early builds.Disconnect rocker housing injector harness connectors.
35. Remove injector harness nuts from injectors.