Chrysler Town, Dodge Caravan. Manual — part 533
VAPOR CANISTER
DESCRIPTION
There are 2 EVAP canisters on the vehicle. The
vacuum and vapor tubes connect to the top of the
canister. It is a charcoal canister (Fig. 15) or (Fig.
16).
OPERATION
All vehicles use a maintenance free, evaporative
(EVAP) canister. Fuel tank vapors vent into the can-
ister. The canister temporarily holds the fuel vapors
until intake manifold vacuum draws them into the
combustion chamber. The Powertrain Control Module
(PCM) purges the canister through the proportional
purge solenoid. The PCM purges the canister at pre-
determined intervals and engine conditions.
Purge Free Cells
Purge-free memory cells are used to identify the
fuel vapor content of the evaporative canister. Since
the evaporative canister is not purged 100% of the
time, the PCM stores information about the evapora-
tive canister’s vapor content in a memory cell.
The purge-free cells are constructed similar to cer-
tain purge-normal cells. The purge-free cells can be
monitored by the DRB III
t Scan Tool. The only dif-
ference between the purge-free cells and normal
adaptive cells is that in purge-free, the purge is com-
pletely turned off. This gives the PCM the ability to
compare purge and purge-free operation.
REMOVAL
REMOVAL
(1) Raise and support the vehicle.
(2) Remove the 2 hoses (Fig. 15).
(3) Remove bolt.
(4) Pull canister rearward to remove.
Fig. 15 FRONT EVAP CANISTER
1 - Front EVAP Canister
2 - Vent Valve
Fig. 16 REAR EVAP CANISTER
1 - Rear EVAP Canister
2 - Front EVAP Canister
3 - Vent Valve
25 - 18
EVAPORATIVE EMISSIONS
RS
REMOVAL - WITH NVLD
(1) Raise and support the vehicle.
(2) Remove the 3 hoses.
(3) Remove bolt (Fig. 17).
(4) Pull canister rearward to remove.
REMOVAL - REAR EVAP CANISTER
(1) Raise and support the vehicle.
(2) Remove 3 hoses (Fig. 16).
(3) Remove the bolt.
(4) Pull rearward to remove canister.
INSTALLATION
INSTALLATION
(1) Install canister arrow heads into the rubber
gromments (Fig. 18)
(2) Install bolt and tighten.
(3) Install hoses.
(4) Lower vehicle.
VAPOR CANISTER LOCATION
Fig. 17 MOUNTING BOLT
Fig. 18 FRONT EVAP CANISTER BRACKET
RS
EVAPORATIVE EMISSIONS
25 - 19
VAPOR CANISTER (Continued)
INSTALLATION - WITH NVLD
(1) Install canister arrow heads into the rubber
gromments (Fig. 19).
(2) Install bolt and tighten.
(3) Install hoses.
(4) Lower vehicle.
INSTALLATION - REAR EVAP CANISTER
(1) Install canister arrow heads into the rubber
gromments (Fig. 20).
(2) Install bolt and tighten.
(3) Install hoses.
(4) Lower vehicle.
Fig. 19 CANISTER MOUNTING STUDS
Fig. 20 REAR EVAP CANISTER BRACKET
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EVAPORATIVE EMISSIONS
RS
VAPOR CANISTER (Continued)
EXHAUST GAS RECIRCULATION
TABLE OF CONTENTS
page
page
EXHAUST GAS RECIRCULATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TUBE
. . . . . . . . . . . . . . . . . . . . . . . . 21
. . . . . . . . . . . . . . . . . . . . 21
VALVE
. . . . . . . . . . . . . . . . . . . . . . . . . 22
. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
. . . . . . . . . . . . . . . . . . . . . . . . 23
. . . . . . . . . . . . . . . . . . . . 23
EXHAUST GAS
RECIRCULATION
SPECIFICATIONS
TORQUE
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
EGR valve to cyl. head
2.4L
22
-
200 ±25
EGR tube to EGR valve
2.4L
11.9
-
105 ±20
EGR tube to intake
manifold 2.4L
11.9
-
105 ±20
EGR valve to adaptor
3.3/3.8L
22
-
200 ±25
EGR tube to EGR valve
3.3/3.8L
11.9
-
105 ±20
EGR tube to intake
manifold 3.3L
5.6
-
50 ±10
EGR tube to intake
manifold 3.8L
11.9
-
105 ±20
TUBE
REMOVAL - 2.4L
(1) Remove EGR tube attaching bolts at intake
manifold.
(2) Remove EGR tube attaching bolts at EGR
valve.
(3) Check for signs of leakage or cracked surfaces
on either the manifold or tube. Repair or replace as
necessary.
INSTALLATION - 2.4L
(1) Loose install EGR tube and gasket with attach-
ing bolts at intake manifold.
(2) Loose install EGR tube and gasket with attach-
ing bolts at EGR valve.
(3) Tighten bolts to EGR valve to 11.9 N·m (105
±20 ins. lbs.).
(4) Tighten bolts to Intake manifold to 11.9 N·m
(105 ±20 ins. lbs.).
RS
EXHAUST GAS RECIRCULATION
25 - 21
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