Index Chrysler Chrysler Town & Country/Voyager, Dodge Caravan, Plymouth Voyager - service repair manual 1992 year
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EVAPORATION CONTROL SYSTEM The evaporation control system prevents the emis- sion of fuel tank vapors into the atmosphere. When fuel Manifold vacuum purges the vapors at idle as well as off idle. The system is a bi-level purge system. The The evaporative system uses specially manu- factured hoses. If they need replacement, only PRESSURE RELIEF/ROLLOVER VALVE All vehicles have a combination pressure relief and rollover valve. The dual function valve relieves fuel The pressure relief valve opens at a certain pressure. When fuel tank pressure increases above the cali- vapors pressure. The evaporative (charcoal) canister refer to the Fuel Tank section of Group 14. EVAPORATIVE CANISTER All vehicles use a sealed, maintenance free, evapora- tive (charcoal) canister. The canister mounts to the Fuel tank pressure vents into the canister. The canister temporarily holds the fuel vapors until intake CANISTER PURGE SOLENOID The engine controller operates the canister purge solenoid (Fig. 3). During warm-up and for a specified When the engine reaches a specified operating tem- perature and the time delay interval has occurred, the ENGINE VACUUM SCHEMATIC—3.3L ENGINE . EMISSION CONTROL SYSTEMS 25 - 5 |