Dodge Intrepid User Manual

EVAPORATIVE EMISSIONS
TABLE OF CONTENTS
page page
EVAPORATIVE EMISSIONS
OPERATION - EVAPORATION CONTROL
SYSTEM ............................11
EVAP/PURGE SOLENOID
DESCRIPTION .........................12
OPERATION ...........................12
REMOVAL .............................12
INSTALLATION .........................12
FUEL FILLER CAP
DESCRIPTION .........................13
OPERATION ...........................13
NATURAL VAC LEAK DETECTION ASSY
DESCRIPTION .........................13
OPERATION ...........................13
REMOVAL .............................14
INSTALLATION .........................14
ORVR
DESCRIPTION .........................15
OPERATION ...........................15
PCV HOSE
DESCRIPTION .........................16
REMOVAL .............................16
INSTALLATION .........................16
PCV VALVE
DESCRIPTION .........................17
OPERATION ...........................17
DIAGNOSIS AND TESTING - PCV SYSTEM . . . 18
VAPOR CANISTER
OPERATION ...........................18
REMOVAL .............................18
INSTALLATION .........................19
EVAPORATIVE EMISSIONS
OPERATION - EVAPORATION CONTROL
SYSTEM
The evaporation control system prevents the emis-
sion of fuel tank vapors into the atmosphere. When
fuel evaporates in the fuel tank, the vapors pass
through vent hoses or tubes to an activated carbon
filled evaporative canister. The canister temporarily
holds the vapors. The Powertrain Control Module
(PCM) allows intake manifold vacuum to draw
vapors into the combustion chambers during certain
operating conditions (Fig. 1).
All engines use a proportional purge solenoid sys-
tem. The PCM controls vapor flow by operating the
purge solenoid. Refer to Proportional Purge Solenoid
in this section.
NOTE: The evaporative system uses specially man-
ufactured hoses. If they need replacement, only use
fuel resistant hose. Also the hoses must be able to
pass an Ozone compliance test.
NOTE: For more information on Onboard Refueling
Vapor Recovery (ORVR), refer to the Fuel Delivery
section.
LH EVAPORATIVE EMISSIONS 25 - 11

Dodge Intrepid Specifications

General

Brand	Dodge
Model	Intrepid
Category	Automobile
Language	English