Question about 1998 Toyota Corolla

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Check engine light came on. Failed inspection they said it was the cannister purge valve. They want $462 to repair. My husband has alot of engine repair knowledge, can he fix it

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  • jodywhited Oct 01, 2010

    the repair shop said that two codes came up P0441 and P0446 that could be several things but in his experience 90% of the time it is the purge valve. It was an expensive chance to take on the off chance it wasn't it. If this is the part we need any recommendations where to get it, they quoted us $350

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The purge valve is the small electrical valve that allows the ECU to let fuel vapours trapped in the charcoal canister to be released down a pipe to the inlet manifold for inclusion in the combustion process when the throttle is open. The replacement part will be much, very much cheaper than $462 and once located is very simple to exchange. The swap should take no longer than half an hour at most. The valve is a small electrical device (often circular in shape) that lies on the pipe from the charcoal EVAP canister to the inlet manifold plenum. The valve cycles on and off according to how the engine is being used. The purge valve does not open during idle (when throttle is closed) as this would compromise the inlet vacuum engine at this slow speed and upset the smooth running. If, as you say, your husband has good repair experience then this will be one of his easier jobs.

Posted on Sep 28, 2010

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  • Joseph Prosser Oct 01, 2010

    The 0441 code refers to the purge valve and the 0446 refers to the vent valve and I'll return to this fact later on. Firstly the sourcing of a Toyota purge valve outside of the dealer net work is difficult and so may pay over the odds for such a simple device. The dealership will want you to buy a new charcoal canister etc. along with it . OK the purge valve I described earlier as 'circular', in fact only the diaphragm is circular, the solenoid, (two wire) electrical connection is a bit rectangular along with two tube mount extensions and a bracket. It is located next to the air cleaner. The solenoid opens a valve between the two two tube extensions. It might just be repairable...so do the following tests on it . There are basically three possible failure modes: 1) stuck valve due to carbon dust from the charcoal canister being drawn into the mechanism - might be possible to clear when stripped down 2) sticky plunger action due to corrosion - might be possible to polish up with steel wool when stripped down 3) broken windings in the solenoid - can be checked by testing for electrical continuity with a voltmeter between the two electrical contacts in the connecting socket. If there is continuity put a tube on to one of the tube mounts and **** or blow into this tube, there should be resistance. Now apply 12 volts ( a couple of trailing wires from the battery terminals should be OK) to the socket pins and again ****/blow into the tube. If the air flow resistance disappears then the solenoid appears to be working, but maybe inefficiently. If there is resistance all the time to air flow then open the solenoid up and see if there is anything obviously mechanically wrong that can be fixed with a clean up. When taking it apart be aware that it will need to put back together so take great care not to break anything in the process.
    Now to the two codes. There is some evidence that when the two codes show at the same time that there may be a fault with the vapour pressure sensor on the 3 way switching valve, especially on the 98 and 99 models (Toyota quickly changed the design to avoid this weakness on 2000 models and later). So if you renew the purge valve and the issue still persists keep this potential other cause in mind.

  • T. McKee Nov 03, 2012

    Got the 441 & 446 code too. Been driving it for 2 mo. Runs fine.

  • T. McKee Nov 03, 2012

    got the 441 & 446 code too. Been driving 2 mo.. Running fine.

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Yes he can,and I wouldn't put any auto knowledge to waste.
The part may be dealer only, and cost a lot,but why pay for labor, you will be done in 30 minuites.
I would scan for the code ,and be sure the code will relate to a part. Most codes only indicate a system failure ,not a part that needs to be changed.

Posted on Sep 28, 2010

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I have a blinking check engine light and I have went to have the codes checked out and they show a bad gas cap but the car has a rough idle and I have just rebuilt the engine. the car sounds as though it...


Hi, if the trouble code was P0455, it could be a purge valve that has failed or jammed open. This can easily happen when the vapor cannister screen fails and allows charcoal into the purge line. The charcoalcan then block the closing of the purge valve and allow purge flow during idle. Remove the purge valve and see if it's open. If it's jammed, clean it out. If there is charcoal in it, replace the vapor cannister. If the valve just doesn't close due to a broken return spring, replace the valve.
If the valve is fine, turn your attention to the parts in the back of the car. Look for a busted hose on the cannister or a crack in the cannister, but this would not explain the idle issues. Please let me know if you have questions, and thanks for using FixYa.
purge valve:

jturcotte_1361.gif

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jturcotte_1362.gif

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If you have P0455, check the EVAP hose from the fuel tank to the charcoal cannister for leaks. Inspect the cannister and the hose to the purge valve. Make sure the purge valve is not stuck open.
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I have a 03 dodge ram 1500 and got the codes p0440 and p0441. changed gas cap. where are all the parts located


P0441 - Evaporative Emission Control System Incorrect Purge Flow The "EVAP purge flow" faults are issues between the carbon cannister and the intake. The EVAP leak detection generally concerns the fuel tank to carbon cannister plumbing. A little background. The EVAP or evaporative emission system is a control system to keep vapors from evaporation in the fuel tank from getting into the atmosphere. The fuel tank is not vented, but rather the vapors are piped to the carbon cannister (usually located behind the pass. side front wheel) where the charcoal element absorbs the vapor. This is actually a vapor "storage" device. Under certain engine operating conditions, the ECU activates the Cannister Purge Valve (N80) which opens and allows the engine vacuum to **** the fuel vapors back out of the carbon cannister. This purges the vapor, allowing the cannister to absorb more vapor. This evap system has been on vehicles since the '70s. As part of the OBDII standard effective for 1996 cars and newer, it was mandated that leaks in the systems must be detected and reported as a fault which will set the Check Engine Light (CEL). To detect leaks, the system is pressurized by a pump so that leaks can be detected by a lack of appropriate pressure in the system. If there is a leak, such as a cracked vent hose, loose (or leaky) gas cap, poorly installed or defective O-rings on the fuel level senders on the fuel tank, etc. a code will be set. On the cannister to intake side, leaks are detected by deviations in the idle control system. If you have leaks in the lines from the carbon cannister to the intake, intake leaks, a defective purge valve, etc you will often get purge flow faults. My first recommendation is to closely inspect all the small vacuum lines connected to the intake manifold. The corrugated plastic lines are often the culprits, as well as the fabricate covered vacuum lines. Also consider replacing the gas cap.

Nov 09, 2009 | 2005 Dodge Ram 1500

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Yes. The evaporative emission system is comprised of a cannister to capture and store gas vapors, a purge valve solenoid that opens when certain engine conditions are met, and purges the vapors from the cannister to be burned in the combustion process rather than being released into the atmosphere, A key component of this system is the plain, old ordinary gas cap. If the cap was faulty it could cause problems in the evap system, which apparently caused you to fail the smog test. Hope this helped and best wishes.

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3 Answers

P0441 code means what ?


Evaporative Emission Control System Incorrect Purge Flow
The "EVAP purge flow" faults are issues between the carbon cannister and the intake. The EVAP leak detection generally concerns the fuel tank to carbon cannister plumbing.
A little background. The EVAP or evaporative emission system is a control system to keep vapors from evaporation in the fuel tank from getting into the atmosphere. The fuel tank is not vented, but rather the vapors are piped to the carbon cannister (usually located behind the pass. side front wheel) where the charcoal element absorbs the vapor. This is actually a vapor "storage" device. Under certain engine operating conditions, the ECU activates the Cannister Purge Valve (N80) which opens and allows the engine vacuum to **** the fuel vapors back out of the carbon cannister. This purges the vapor, allowing the cannister to absorb more vapor. This evap system has been on vehicles since the '70s.
As part of the OBDII standard effective for 1996 cars and newer, it was mandated that leaks in the systems must be detected and reported as a fault which will set the Check Engine Light (CEL). To detect leaks, the system is pressurized by a pump so that leaks can be detected by a lack of appropriate pressure in the system. If there is a leak, such as a cracked vent hose, loose (or leaky) gas cap, poorly installed or defective O-rings on the fuel level senders on the fuel tank, etc. a code will be set. On the cannister to intake side, leaks are detected by deviations in the idle control system. If you have leaks in the lines from the carbon cannister to the intake, intake leaks, a defective purge valve, etc you will often get purge flow faults.
My first recommendation is to closely inspect all the small vacuum lines connected to the intake manifold. The corrugated plastic lines are often the culprits, as well as the fabricate covered vacuum lines. Also consider replacing the gas cap.

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1 Answer

2000 blazer runs rough after gas tank was overfilled


there is a vapour purge line from the tank to a charcoal cannister. The line& cannister has been contaminated with liquid gas. When the engine attempts a normal purge from cannister it gets loaded with raw gas, causing rough running and cherck engine light. Replace cannister. Never over fill gas tank, especially on hot sunny days

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2 Answers

I have a p0441 fault on my 2003 dodge neon. i changed the canister purge solenoid and the light went off for about a month and just came back on what could cause this?


Evaporative Emission Control System Incorrect Purge Flow The "EVAP purge flow" faults are issues between the carbon cannister and the intake. The EVAP leak detection generally concerns the fuel tank to carbon cannister plumbing. A little background. The EVAP or evaporative emission system is a control system to keep vapors from evaporation in the fuel tank from getting into the atmosphere. The fuel tank is not vented, but rather the vapors are piped to the carbon cannister (usually located behind the pass. side front wheel) where the charcoal element absorbs the vapor. This is actually a vapor "storage" device. Under certain engine operating conditions, the ECU activates the Cannister Purge Valve (N80) which opens and allows the engine vacuum to **** the fuel vapors back out of the carbon cannister. This purges the vapor, allowing the cannister to absorb more vapor. This evap system has been on vehicles since the '70s. As part of the OBDII standard effective for 1996 cars and newer, it was mandated that leaks in the systems must be detected and reported as a fault which will set the Check Engine Light (CEL). To detect leaks, the system is pressurized by a pump so that leaks can be detected by a lack of appropriate pressure in the system. If there is a leak, such as a cracked vent hose, loose (or leaky) gas cap, poorly installed or defective O-rings on the fuel level senders on the fuel tank, etc. a code will be set. On the cannister to intake side, leaks are detected by deviations in the idle control system. If you have leaks in the lines from the carbon cannister to the intake, intake leaks, a defective purge valve, etc you will often get purge flow faults. My first recommendation is to closely inspect all the small vacuum lines connected to the intake manifold. The corrugated plastic lines are often the culprits, as well as the fabricate covered vacuum lines. Also consider replacing the gas cap.

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7 Answers

I have fault code P0441 showing up on my 2003 Dodge Durango. Not sure what this code is, or how to correct it..


P0441--
Evaporative Emission Control System Incorrect Purge Flow.

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.

A code P0441 could mean one or more of the following has happened:

* Bad vacuum switch
* Broken or damaged EVAP line or canister
* Open in PCM purge command circuit
* Open or short in Voltage feed circuit to Purge Solenoid
* Faulty purge solenoid
* Restriction in EVAP solenoid, line or canister
* Corrosion or resistance in purge connector
* Bad PCM

Here are a few solutions that should be followed to fix this issue.

* Common Chrysler fix - Replace Leak Detection Pump / LDP
* Repair damaged EVAP lines or canister
* Repair open or short in voltage feed circuit to Purge Solenoid
* Repair open in PCM purge command circuit
* Replace purge Solenoid
* Replace vacuum switch
* Repair restriction in Evap line or canister or solenoid
* Repair resistance in purge connector
* Replace PCM


Please rate and god bless:)

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1 Answer

Engine light still on


this is the valve that connects to the carbon cannister, try to clean out the whole throttle body, all breather pipes going to and from the throttle body and the purge valve ( carbon cannister )

Feb 18, 2009 | 1998 Audi A6

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