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The national cost for a canister purge valve replacement in 2023 is between $70 and $340 with an average of $144​

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POPULAR VEHICLES

National average cost of a a Canister Purge Valve Replacement
for popular vehicles:

Chevrolet Impala

Avg. cost
$127

Ford F-150

Avg. cost
$119

Ford Fusion

Avg. cost
$212

Car Model

Avg. cost

$50

What is a canister purge valve and how does it work?

A canister purge valve is part of the Evaporative Emission Control (EVAP) system of a vehicle. The EVAP system captures fuel vapors that evaporate from the fuel tank and reroutes them to be burned in the engine rather than be allowed to escape into the atmosphere. Fuel vapors that vent outside result not only in a loss of fuel, but also in emissions that are harmful to the environment and people.

Also known as a purge solenoid, the canister purge valve allows the fuel tank to be vented so that pressure does not build up inside. At the same time, it prevents those vapors from escaping. Vapors that are collected are stored in a special vapor canister where they are absorbed by activated carbon (charcoal) and stored there until the engine control module (ECM) signals the canister purge valve to open. Once the valve opens, the fumes stored in the canister are drawn out by the engine and burned as part of the combustion process.

COMMON SYMPTOMS

How do I know if my vehicle needs a new canister purge valve?

A check engine light is a common sign that a canister purge valve has failed. A diagnostic scan of the vehicle will reveal a trouble code related to pressure in the EVAP system. Besides the check engine light and related trouble code, other possible symptoms include:

Difficulty starting your engine

A rough idle

Decreased fuel economy

A failed emissions test

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HOW IS THIS SERVICE PERFORMED?

How is a a Canister Purge Valve Replacement done?

To replace the canister purge valve, a technician will take the following general steps:



  • Disconnect the negative battery terminal, taking care to preserve the vehicle computer memory
  • Remove any shields, guards, covers, or ducts to gain access to the canister purge valve
  • Disconnect and remove the wiring from the valve
  • Disconnect any EVAP hoses attached to the component
  • Remove any screws or fasteners holding the device in place and remove it from the vehicle
  • Insert and fasten the new canister purge valve in place
  • Reconnect the hoses and wiring
  • Reinstall any shields, guards, covers, or ducts that were removed
  • Reconnect the battery terminal
  • Start the vehicle and verify the repair by using a scan-tool to test the EVAP system and cycle the EVAP canister purge valve

Other questions customers ask

Can you drive with a faulty canister purge valve?
The results of driving with a faulty canister purge valve depend on which position the valve is in when it fails. If the purge valve fails in the closed position, you most likely won't notice driveability issues with your vehicle. But you might find that the check engine light comes on, and you might notice poor fuel mileage. If, on the other hand, the valve fails in the open position, your engine can run rough, stall, shake, be hard to start, and suffer from poor fuel economy.
What happens if the canister purge control valve fails?
The EVAP system feeds fuel vapors into the engine to be burned rather than be released into the atmosphere. Knowing this, the engine’s computer adjusts the air to fuel ratio to compensate for the addition of fuel. If the canister purge valve fails, an excess of fuel (or a decrease) will be present inside the combustion chambers, causing your engine to run either too rich or too lean. Either is problematic for your engine.
What causes canister purge valve failure?
Canister purge valve failure can be related to a mechanical failure of the device itself, or damaged, decayed, and dirty wires leading to the valve.

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RELATED PARTS

What parts are related to a Canister Purge Valve Replacement?

Related Parts

RELATED SERVICES

What are some other common services related to a Canister Purge Valve Replacement?

Gas Cap Replacement
Fuel Filter Replacement
Fuel Evaporative Canister Replacement

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