Dodge Viper SRT-10 (ZB). Manual — part 200
SPECIAL TOOLS
FUEL
ACCELERATOR PEDAL
DESCRIPTION
CAUTION: When servicing the accelerator pedal, do
not damage or kink the core wire inside the cable
sheathing.
For the removal of the pedal assembly refer to
Brakes section and then Adjustable Pedal Assembly.
The accelerator pedal is part of pedal assembly and
is not serviced separately. For cable removal/installa-
tion refer to Throttle Cable in this section.
REMOVAL
CAUTION: When servicing the accelerator pedal, do
not damage or kink the core wire inside the cable
sheathing.
For the removal of the pedal assembly refer to
Brakes section and then Adjustable Pedal Assembly.
The accelerator pedal is part of pedal assembly and
is not serviced separately. For cable removal/installa-
tion refer to Throttle Cable in this section.
Test Kit, Fuel
Adapters, Fuel Pressure Test—6539 and/or 6631
Spanner Wrench—6856
Fuel Line Adapter 1/4
O2S (OXYGEN SENSOR) REMOVAL/INSTALLER-
C4907
Oxygen sensor tool
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FUEL INJECTION
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FUEL INJECTION (Continued)
CRANKSHAFT POSITION
SENSOR
DESCRIPTION
The crankshaft position sensor is located in the
passengers side of the engine block, below the
exhaust manifold at the rear of the engine (Fig. 1).
OPERATION
There are 5 sets of slots on flywheel ring gear.
Each set contains 2 slots, for a total of 10 slots. Basic
timing is determined by the position of the last slot
in each group. Once the Powertrain Control Module
(PCM) senses the last slot, it determines crankshaft
position (which piston will be next at TDC) from the
camshaft position sensor input. It may take the PCM
up to one engine revolution to determine crankshaft
position during cranking.
The PCM uses the camshaft position sensor to
determine injector sequence. Once crankshaft posi-
tion has been determined, the PCM begins energizing
the injectors in sequence. The PCM determines igni-
tion timing from the crankshaft timing sensor.
REMOVAL
The sensor is located at the rear lower passenger
side of motor (Fig. 1).
(1) Disconnect electrical connector from crankshaft
position sensor (Fig. 2).
(2) Remove sensor mounting bolt.
(3) Pull sensor out. A light tap to top of sensor
may ease removal.
INSTALLATION
(1) Slide the sensor into the hole.
(2) Install and tighten the mounting bolt to 11
N·m (95 in. lbs.) torque.
(3) Connect the electrical connector to the sensor
and lock.
FUEL INJECTORS
DESCRIPTION
The fuel injectors are electrical solenoids (Fig. 3).
The injectors are positioned in the intake manifold
with the nozzle ends directly above the intake valve
port.
Fig. 1 CRANKSHAFT POSITION SENSOR
Fig. 2 CRANKSHAFT POSITION SENSOR
ASSEMBLY
Fig. 3 FUEL INJECTOR & CLIP
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FUEL INJECTION
14 - 31
OPERATION
The injector contains a pintle that closes off an ori-
fice at the nozzle end. When electric current is sup-
plied to the injector, the armature and needle move a
short distance against a spring, allowing fuel to flow
out the orifice. Because the fuel is under high pres-
sure, a fine spray is developed in the shape of a hol-
low cone. The spraying action atomizes the fuel,
adding it to the air entering the combustion chamber.
The injectors are positioned in the intake manifold.
REMOVAL
(1) Release fuel system pressure. Refer to Fuel
Pressure Release Procedure in this section.
(2) Remove the battery cover and disconnect nega-
tive battery cable.
(3) Remove the air cleaner assembly, refer to the
Engine/Air Intake System/Air Cleaner Housing for
more information.
(4) Disconnect the electrical connector to the MAP
sensor and Coolant Temperature sensor (Fig. 4).
(5) Disconnect the electrical connector to the TPS
and Idle Air Control (Fig. 5).
(6) Remove the wiring harness from the wiring
clips under thew throttle body (Fig. 6).
Fig. 4 MAP & COOLANT TEMP. SENSOR
1 - Fuel Rail
2 - MAP Sensor
3 - Coolant Temperature Sensor
4 - Fuel Injector
Fig. 5 TPS & IDLE AIR CONTROL
1 - Throttle Position Sensor
2 - Idle Air Control Motor
3 - Fuel Rail
4 - Connector Fuel Line for Fuel Rails
Fig. 6 WIRING CLIP
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FUEL INJECTION
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FUEL INJECTORS (Continued)
(7) Disconnect the electrical connector from the
fuel injectors (Fig. 7).
(8) Disconnect the fuel line quick connector (Fig.
8).
(9) Remove the bolts for the fuel rail (Fig. 9).
(10) Pull fuel rail and injectors straight up and out
of the intake manifold.
(11) Move the fuel rail forward and out from under
the intake manifold and throttle body (Fig. 10).
Fig. 7 FUEL INJECTOR CONNECTOR
Fig. 8 FUEL CONNECTION
Fig. 9 FUEL RAIL
Fig. 10 THROTTLE BODY
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FUEL INJECTION
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FUEL INJECTORS (Continued)
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