How to test and replace EVAP canister purge control?

How to test and replace EVAP canister purge control?

Code P0443 deals with two components. The EVAP Canister Purge Control SOLENOID Valve (this video) and the Purge Control valve (this link – http://youtu.be/4z9uUwc3iV8) This was performed on a 1997 Nissan Maxima. Please check with your vehicle’s repair manual for testing parameters.

Where is the purge valve on a charcoal canister?

What the Canister Purge Valve Does The charcoal canister purge valve, or evap purge valve, is nothing more than a small, vacuum or electronically actuated air valve that is attached to the back of the intake manifold. The other end of the valve usually has a hose that runs all the way back towards the gas tank and into the charcoal canister.

Can a bad purge valve cause a vacuum leak?

There are codes directly associated with the purge valve, like the P0443. However, because the symptoms are identical to a vacuum leak, you can also get various sensor errors instead. The car’s computer doesn’t know if the vacuum leak is caused by a bad gasket or a stuck valve.

What are the symptoms of a bad EVAP canister?

Symptoms of a Bad or Failing Evaporative Emission Control Canister. Common signs include the Check Engine Light coming on, raw fuel smell coming from the back of the car, and a collapsed or leaking fuel tank.

How does a purge valve work in an EVAP system?

EVAP Purge Valve Operation. A flap in the EVAP purge valve body restricts the motion of fluid and is magnetically attracted by the voltage applied via the valve’s electrical contacts. The flap is attracted to a coil in the evaporative purge system, which closes the valve and blocks the passage of fluids.

What are the symptoms of a bad canister purge valve?

One of the first symptoms that a faulty canister purge valve may produce is a rough idle. In this case, you will notice the car running inconsistently while stopped or driving at low speeds. If the canister purge valve fails and sticks open, it will create a vacuum leak that can affect the engine idle speed and quality.

What is the function of the EVAP canister?

What is the function of Evaporative Emission Canister. The evaporative emission (EVAP) canister is a storage device for fuel vapors that are emitted by the fuel tank in hot soak conditions. When the vehicle is at normal operating conditions, the vapors are purged from the canister.