What does a Subaru purge valve do?
The canister purge valve, also commonly referred to as the purge valve, is an important component of your Evaporative Emission Control (EVAP) system. This system restricts the fuel vapours created in your fuel tank from escaping into the atmosphere by trapping them in a charcoal canister.
Where is the purge valve on a Subaru Impreza?
The Canister vent valve solenoid/Drain Valve (top of pic next to the cylindrical drain filter) and the pressure control solenoid on the lower right located in back of the car, the Charcoal Canister (underneath everything) and the purge valve control solenoid (the separate part w/the hose) from the intake manifold. See attached.
How does the EVAP purge work on a Subaru?
One, to the charcoal purge alerting it to open, as well as one to the EVAP purge solenoid, alerting it to open under vacuum. The vapors are then drawn from the charcoal canister, by vacuum, into the intake manifold, where they are ultimately burned up. For a more in depth description we suggest doing a internet search.
Is there an EVAP system that does not require a purge valve?
A perfect example of a EVAP system that does not require the Purge Valve is the JDM Subaru ej207. This model still uses the same EVAP purge solenoid, but the mess of hoses is cleaned up considerably (only 2 hoses now). Diagram A and B cars can be setup in the identical fashion, although it does not apply to diagram C cars.
Can a Subaru purge control solenoid be replaced?
Rather, spend the $100+ and replace the unit with a new one from Subaru. There are way too many negative side affects with a broken valve (pollution, loss of power, etc). Be extra careful with cars that have 2 solenoids since this could lead to twice as many expensive parts to replace.
Is it safe to drive with bad purge valve?
While you can still drive your car with a bad purge valve, you will only expose it to further damage not only to the EVAP system, but as well as to the other parts in your vehicle. The more you drive the vehicle with a bad purge valve, the more you will harm other parts. It is necessary to fix the problem eventually.
How to troubleshoot a Subaru Impreza Forester engine?
Basically, w/the key off, connect the green connectors under the driver’s side of the dash, key to ON >>>engine OFF, and ensure all the solenoids involved are clicking and airflow isn’t continuous while clicking…the valve should open/close causing the airflow to be interrupted. History (but not a recommended troubleshooting sequence!):
What’s the cel on a 2004 Subaru Forester?
I have a 2004 Impreza TS (same as ’99-’04 Forester) that had the Check Engine LIght (CEL) on for a P1443 – ” EVAP Control System Vent Control Function Problem “. The fix was to replace Purge Valve control solenoid, P/N: 16102AA080 (16102AA490 for ’05-’07) – located under the intake manifold on the passenger side of the engine.
What causes a Subaru Impreza to stall after starting?
If the purge solenoid sticks open it draws vacuum on the canister all the time when the engine is running. It also allows fuel vapors from refueling to enter the engine right after starting, which makes the fuel mixture too rich. It basically floods the engine, which could cause it to stall.