I have 96 corsica 103,000 miles
smoked vacuum lines found no leaks
replaced gas cap
replaced rubber line to charcoal canister
resealed vacuum line that attaches to intake by pcv valve
replaced charcoal canister
service engine light still comes on after a few days driveing with same code po441 no purge flow
Please help
Most likely is a bad EVAP purge valve. But check below list.
This indicates that a part of the EVAP
control system is no longer functioning correctly. The EVAP system consists of
many parts, including (but not limited to) the gas cap, fuel lines, carbon
canister, purge valve, and other hoses. The (EVAP) emission control system
prevents the escape of fuel vapors from a vehicle's fuel
system. Fuel vapors are routed by hoses to a charcoal canister for storage.
Later, when the engine is running a purge control valve opens allowing intake
vacuum to siphon the fuel vapors into the engine.
EVAP emission canister purge is controlled
by a valve which allows engine vacuum to pull stored fuel vapors from fuel tank
into the engine to be burned, rather than be vented to atmosphere. A vacuum
switch is used to detect when flow exists. If the PCM commands purge and sees
that the switch is closed (indicating no detected purge flow) P0441 is set.
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Symptoms
Likely, no symptoms will be discernible to
the driver, other than the illuminated Check Engine Light.
Causes
A code P0441 could mean one or more of the
following has happened:
With a P0441 OBD-II trouble code, diagnosis
can be tricky at times. Here are some things to try:
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check engine light is on
The alternator hot lead at the back of the alternator shorted out against the metal vacuum rubes that come from the charcoal canister that runs behind the alt. Now the engine won't turn over or run even when I turn the ign on & use a remote starter switch. The ONLY things that work are the headlights & horn. Not even the dash lights come on when I turn on the ign switch!
CODES- FOR LEAN O2 AND LOW PURGE VALVE EVAP CANISTER / FOUND VACCUM LINES ROTTED, CAN'T FIND CANISTER. ENGINE LOOSES POWER AFTER 100MI.INTERSTATE SPEED,VERY SLOW ACCEL 50-70MPH LOOSES IT COMPLETELY 49-0. SUSPECT FUEL TANK SUCTION BUILD-UP BECAUSE OF CANISTER NO PURGE
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