Question about 2004 Chevrolet Monte Carlo
Replace Charcoal Canister, (Next to Gas Tank)
Posted on Dec 09, 2011
Do you know where the leak is ,or what is causing it?
Check all the EVAP hoses in the system.
Pretty hard to test without,pressure,vacuum or smoke machine and system knowledge
Posted on May 04, 2010
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Posted on Jan 02, 2017
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Evaporative Emission Control System Leak Detected (no purge flow
or large leak)
What does that mean? This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. 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.
Symptoms You likely won't notice any drivability problems.
Causes A code p0455 most likely means one or more of the following has happened:
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