Attach a handheld vacuum pump to the purge valve residing on the canister's topside. Turn the hand pump on and observe the valve. Listen and look at the purge valve as the hand pump remains on. Detach the hand pump from the purge valve. Where is the EVAP purge valve located? How long does it take for EVAP monitor to reset?
Start the engine and idle for four minutes, then drive in stop-and-go traffic for five minutes using smooth accelerations and decelerations. Stop and idle for 4 minutes. The EVAP monitor should be complete.
How much does it cost to replace an EVAP system? The fuel evaporative system EVAP controls emission by housing vapors from evaporated fuel and sending them back to the fuel tank to be reused. How much does it cost to replace a canister purge valve? How do you remove an EVAP canister? Does EVAP system affect performance? Since the EVAP system is a closed system, any small leak or failed sensor will generate a system fault.
Obviously, the indication that there is a problem will start with the check engine light. You typically will not notice any change in the performance of the car due to an EVAP leak. What is consensual pupillary response? What is the difference between associative and nonassociative learning? In the meantime, you'll notice that the EVAP canister has an electrical harness attached to the unit. Remove this harness by inserting a small, flat blade screwdriver into a slot that contains a small plastic clip.
Lower the clip with the screwdriver and carefully remove the electrical harness from the EVAP canister. Remove all three of these hoses and clearly mark which hose attaches to the specific male fitting on the EVAP emissions control canister. Do this by using masking tape and marking descriptions on the tape, then wrapping tape on each hose. The EVAP emissions control canister is attached to a bracket in two ways.
First, there are two bolts that secure the canister to a bracket. On some vehicles, a secondary set of clips secures the canister to the vehicle's undercarriage.
There are commonly one or two bolts. Remove these bolts using a ratchet, extension and a 10mm socket in most cases it will be a 10mm. In many cases this part is attached to a series of clips on the backside. You can gain access to these clips after you remove the bolts. Using a flat blade screwdriver, carefully depress on the clip and slide the EVAP emissions canister off the bracket. Once all wires, hoses, and clips have been removed, the canister should easily come off. Remove the old canister and inspect it for any corrosion, holes or burn marks that may have contributed to failure.
The installation of this component is an exact reversal to the removal. Prior to installing the new canister, inspect the condition of the vent hoses. If they are worn, cracked or are showing signs of age, replace them. Step Attach bolts and clips. Step Reattach vent hose and electrical harness. Anything that was removed should be reinstalled as before. Step Clean up underneath vehicle. Before you finish the job, make sure to remove all tools, debris, and hardware from under the vehicle to avoid running over them with your vehicle.
A test drive for this repair is actually very short, due to the fact that in many cases, the failure of this part will show up at idle or start up.
However, before you complete the test drive, it's important to start the vehicle and clear any error codes that previously were downloaded. This will give you a "clean slate" in which to test the new EVAP emissions control canister. Step 2: Check the dashboard to verify that the Check Engine Light does not come on. If it does, you should shut the vehicle off and complete a diagnostic scan. Step 3: Shut off the vehicle.
After verifying that the check engine or other lights are gone, shut the vehicle off. If error codes continue to display, recheck your connections to the canister as it's possible that the vent lines are installed incorrectly. Step 4: Take the vehicle on a 10 mile road test. Return home and verify that the Check Engine Light does not illuminate. This job is fairly simple to complete; however, since you're working with the EVAP system and fuel system, there may be a few complex steps. This article originally appeared on YourMechanic.
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Thanks for that. The Canister purge control valve is most often located in the engine bay on a hose going from the intake to the canister. It can also be located near the fuel tank. From there, you have to factor in labor rates too. All you need to do is locate the valve and potentially remove an intake cover to finish the job. Just remember to reset the engine code by disconnecting and reconnecting the battery to finish the job!
Ask any car question in our new community! Magnus is the owner and main author of MechanicBase. He has been working as a mechanic for over 10 years, and the majority of them specialized in advanced diagnostics and troubleshooting. Certified Automotive Diagnostic Technician. Below is a more detailed list of the five most common symptoms of a faulty canister purge valve.
Contents show. Check Engine Light. Increased Emissions.
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