Chrysler 2004 Concorde Service Manual page 1631

LH
EXHAUST GAS RECIRCULATION
SPECIFICATIONS
TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
EGR VALVE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . 19
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
REMOVAL
REMOVAL - 2.7L
REMOVAL - 3.5L
INSTALLATION
INSTALLATION - 2.7L
EXHAUST GAS
RECIRCULATION
SPECIFICATIONS
TORQUE
DESCRIPTION
EGR valve to cyl. head
EGR tube to EGR valve
EGR tube to intake
manifold
EGR tube to exhaust
manifold
EGR VALVE
DESCRIPTION
The EGR valve consists of three major components.
First there is the pintle, valve seat, and housing
which contains and regulates the gas flow. Second
there is the armature, return spring, and solenoid
coil to provide the operating force to regulate the
flow by changing the pintle position. The solenoid coil
assembly is in parallel with a diode and connects to
the two connectors in the connector assembly. The
third major component which senses pintle position
and is connected to the three connectors in the elec-
trical connector.
EXHAUST GAS RECIRCULATION
TABLE OF CONTENTS
. . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . 20
N·m
31
11
11
31
EXHAUST GAS RECIRCULATION 25 - 19
page
INSTALLATION - 3.5L
EGR TUBE - 2.7L
REMOVAL
REMOVAL - 2.7L UPPER TUBE
REMOVAL - 2.7L LOWER TUBE
INSTALLATION
INSTALLATION - 2.7L UPPER TUBE
INSTALLATION - 2.7L LOWER TUBE
EGR TUBE - 3.5L
REMOVAL - 3.5L
INSTALLATION - 3.5L
Ft. Lbs.
22.8
22.8
OPERATION
The exhaust gas recirculation flow is determined
by the engine controller. For a given set of conditions,
the engine controller knows the ideal exhaust gas
recirculation flow to optimize NOx and fuel economy
as a function of the pintle position. Pintle position is
obtained from the position sensor. The engine con-
troller adjusts the duty cycle of 128 Hz power sup-
plied to the solenoid coil to obtain the correct
position.
REMOVAL
REMOVAL - 2.7L
The EGR valve attaches to the rear of the right
cylinder head.
(1) Disconnect negative battery cable.
. . . . . . . . . . . . . . . . . . 20
. . . . . . . . . . . 21
. . . . . . . . . . 21
. . . . . . . 21
. . . . . . . 22
. . . . . . . . . . . . . . . . . . . . . . . . 22
. . . . . . . . . . . . . . . . . . . . 23
In. Lbs.
275
95
95
275
page