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Chrysler 300M, Dodge Interpid. Manual - part 276

INSTALLATION - 3.5L

(1) Install 3 bolts and tighten to 6.7 N·m ( 60 in.

lbs.).

(2) Install link.
(3) Install electrical connector.
(4) Install the negative battery cable.

THROTTLE BODY

DESCRIPTION

The throttle body is located on the intake manifold

(Fig. 25) or (Fig. 26). Fuel does not enter the intake
manifold through the throttle body. Fuel is sprayed
into the manifold by the fuel injectors.

OPERATION

Filtered air from the air cleaner enters the intake

manifold through the throttle body. The throttle body
contains an air control passage controlled by an Idle
Air Control (IAC) motor. The air control passage is
used to supply air for idle conditions. A throttle valve
(plate) is used to supply air for above idle conditions.

Certain sensors are attached to the throttle body.

The accelerator pedal cable, speed control cable and
transmission control cable (when equipped) are con-
nected to the throttle body linkage arm.

A (factory adjusted) set screw is used to mechani-

cally limit the position of the throttle body throttle
plate. Never attempt to adjust the engine idle
speed using this screw. All idle speed functions are
controlled by the PCM.

REMOVAL

REMOVAL - 2.7L

(1) Disconnect negative cable from battery
(2) Disconnect air plenum from throttle body.
(3) Hold throttle lever in wide open position.

Remove throttle cable and speed control cables from
throttle arm.

(4) Remove throttle cable bracket.
(5) Disconnect electrical connectors from throttle

body.

(6) Remove the throttle body support bracket from

the bottom of the throttle body.

(7) Remove 3 throttle body bolts.
(8) Remove throttle body.
(9) Clean mating surfaces.

REMOVAL - 3.5L

(1) Disconnect negative cable from battery
(2) Remove wiper arms.
(3) Remove cowl screen.
(4) Remove cowl plenum.
(5) Disconnect air plenum from throttle body.
(6) Remove throttle cable bracket.
(7) Disconnect electrical connectors.
(8) Disconnect top vacuum hose.
(9) Remove the throttle body support bracket from

the bottom of the throttle body.

(10) Remove 3 throttle body bolts.
(11) Hold throttle lever in wide open position.

Remove throttle cable and speed control cables from
throttle arm.

(12) Clean mating surfaces.

Fig. 25 Throttle Body 2.7L

1 - TPS SENSOR
2 - THROTTLE BODY
3 - PCV VALVE
4 - EGR TUBE

Fig. 26 Throttle Body 3.2/3.5L

1 - TPS
2 - IAC

FUEL INJECTION

14 - 33

SHORT RUNNER VALVE (Continued)

INSTALLATION

INSTALLATION - 2.7L

(1) Install throttle body and bolts.
(2) Tighten bolts to 11.9 N·m (105 in. lbs.) torque.
(3) Install the throttle body support bracket to the

bottom of the throttle body. Tighten the bolts to 27.1
N·m (20 ft. lbs.) torque.

(4) Hold throttle lever in wide open throttle posi-

tion. Install throttle cable and speed control cable.

(5) Install throttle cable bracket and tighten bolts.
(6) Install air plenum and tighten clamp.
(7) Connect negative cable to battery.

INSTALLATION - 3.5L

(1) Hold throttle lever in wide open throttle posi-

tion. Install throttle cable and speed control cable.

(2) Install throttle body and bolts.
(3) Tighten bolts to 11.9 N·m (105 in. lbs.) torque.
(4) Install the throttle body support bracket to the

bottom of the throttle body. Tighten the bolts to 27.1
N·m (20 ft. lbs.) torque.

(5) Install vacuum hose.
(6) Install throttle cable bracket and tighten bolts.
(7) Install air plenum and tighten clamp.
(8) Install cowl plenum.
(9) Install cowl screen.
(10) Install wiper arms.
(11) Connect negative cable to battery.

THROTTLE CONTROL CABLE

REMOVAL

(1) Working from the engine compartment, hold

the throttle body throttle lever in the wide open posi-
tion. Pull the cable forward and slide it out of the
throttle body cam.

(2) From inside the vehicle, hold up the pedal and

remove the cable retainer and throttle cable from the
upper end of the pedal shaft (Fig. 1).

(3) Remove retainer clip from throttle cable and

grommet at dash panel (Fig. 2).

(4) From the engine compartment, pull the throttle

cable out of the dash panel grommet. The grommet
should remain in the dash panel.

(5) Remove the throttle cable from throttle bracket

by carefully compressing both retaining ears simulta-
neously. Then gently pull the throttle cable from
throttle bracket.

INSTALLATION

(1) From the engine compartment, push the hous-

ing end fitting into the dash panel grommet.

(2) Install the cable housing (throttle body end)

into the cable mounting bracket on the engine.

(3) From inside the vehicle, hold up the pedal and

install throttle cable and cable retainer in the upper
end of the pedal shaft (Fig. 1).

(4) At the dash panel, install the cable retainer

clip between the end of the throttle cable fitting and
grommet (Fig. 2).

(5) From the engine compartment, rotate the

throttle lever to wide open and install the throttle
cable.

THROTTLE POSITION SENSOR

DESCRIPTION

The throttle position sensor mounts to the side of

the throttle body (Fig. 27) or (Fig. 28).The sensor
connects to the throttle blade shaft. The TPS is a
variable resistor that provides the Powertrain Con-
trol Module (PCM) with an input signal (voltage).

OPERATION

The signal represents throttle blade position. As

the position of the throttle blade changes, the resis-
tance of the TPS changes.

The PCM supplies approximately 5 volts to the

TPS. The TPS output voltage (input signal to the
powertrain control module) represents throttle blade
position. The TPS output voltage to the PCM varies
from approximately 0.6 volt at minimum throttle
opening (idle) to a maximum of 4.5 volts at wide open
throttle.

Along with inputs from other sensors, the PCM

uses the TPS input to determine current engine oper-

Fig. 27 THROTTLE POSITION SENSOR 2.7L ENGINE

1 - TPS SENSOR
2 - THROTTLE BODY
3 - PCV VALVE
4 - EGR TUBE

14 - 34

FUEL INJECTION

THROTTLE BODY (Continued)

ating conditions. The PCM also adjusts fuel injector
pulse width and ignition timing based on these
inputs.

REMOVAL

REMOVAL - 2.7L

(1) Remove the negative battery cable.
(2) Disconnect the TPS electrical connector (Fig. 29).
(3) Remove the TPS mounting screws.
(4) Remove the TPS.

REMOVAL - 3.5L

(1) Disconnect the negative battery cable.
(2) Disconnect the air plenum.
(3) Disconnect the TPS electrical connector (Fig.

28).

(4) Remove the TPS mounting screws.
(5) Remove the TPS.

INSTALLATION

INSTALLATION - 2.7L

(1) The throttle shaft end of the throttle body

The TPS has slight tension when rotated into posi-
tion. If it is difficult to rotate the TPS into position,
install the sensor with the throttle shaft on the other
side of the tabs in the socket. Tighten mounting
screws to 5.1 N·m (45 in. lbs.) torque.

(2) After installing the TPS, the throttle plate

should be closed. If the throttle plate is open, install
the sensor on the other side of the tabs in the socket.

(3) Attach electrical connector to the TPS.
(4) Install the negative battery cable.

INSTALLATION - 3.5L

(1) The throttle shaft end of the throttle body

slides into a socket in the TPS. The socket has two
tabs inside it. The throttle shaft rests against the
tabs. When indexed correctly, the TPS can rotate
clockwise a few degrees to line up the mounting
screw holes with the screw holes in the throttle body.
The TPS has slight tension when rotated into posi-
tion. If it is difficult to rotate the TPS into position,
install the sensor with the throttle shaft on the other
side of the tabs in the socket. Tighten mounting
screws to 6.2 N·m (55 in. lbs.) torque.

(2) After installing the TPS, the throttle plate

should be closed. If the throttle plate is open, install
the sensor on the other side of the tabs in the socket.

(3) Attach electrical connector to the TPS.
(4) Install air plenum and tighten the clamp.
(5) Connect the negative battery cable.

Fig. 28 THROTTLE POSITION SENSOR 3.2/3.5L

ENGINE

1 - TPS
2 - IAC

Fig. 29 Throttle Position Sensor—2.7L Engine

1 - TPS SENSOR
2 - THROTTLE BODY
3 - PCV VALVE
4 - EGR TUBE

FUEL INJECTION

14 - 35

THROTTLE POSITION SENSOR (Continued)

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