Question about 2002 Buick Century

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I do not know where the charcoal filter is. Please tell me what kind of tools I will need and where it is and how to remove. My car is not passing the emission test because of a bad charcoal filter or leak in the carburator.

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HI!!
HERE IS A DESCRIPTION OF THE CANISTER AND WHAT NOT TO DO TO KEEP IT WORKING LONGER.
Operation: The charcoal canister holds the fuel vapors collected by the evaporative emissions system until the engine is started and the purge valve opens allowing the vapors to flow back into the intake manifold to be burned. The canister filter is responsible for removing dirt and foreign objects from the air before entering the bottom of the charcoal canister. Advice: Not all charcoal canisters have serviceable filters. Check the repair guides for the vehicle that you are working on.
When topping off your gas tank, it is best to stop pumping when the pump nozzle kicks off the first time. Continuing to add gas, trying to squeeze in as much as possible can overfill the system allowing raw gas to travel through the fuel vapor lines saturating the charcoal canister rendering it useless and in need of replacement.
I do not know where the charcoal filter is. - f34cdb1.jpg

THE VAPOR CANISTER IS LOCATED ON THE RIGHT OR LEFT FRONT OF THE ENGINE COMPARTMENT, JUST FOLLOW THE VACUUM HOSES FROM THE ENGINE. TO REMOVE, LABEL EVERY HOSE TO INSURE PROPER INSTALLATION, TAKE PICTURES, REMOVE THE HOSES, CUT OFF IF POSSIBLE ABOUT 3/8" FROM EVERY HOSE TO MAKE THE FITTING TIGHT IN THE NEW CANISTER. THE WAY I DO IT IS THAT I REMOVE A HOSE FORM THE OLD CANISTER, CUT A 3/8" FROM THE TIP AND INSERT THE HOSE IT IN THE NEW CANISTER, THIS WAY I MAKE SURE I DON'T MIX THEM UP. BOTH WAYS ARE ACCEPTABLE. GOOD LUCK!! DON'T FORGET TO RATE THIS POST!!

Posted on Oct 03, 2010

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Posted on Jan 02, 2017

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3 Answers

P0441 code evap


This code means that you have a problem with purge flow. This is a relatively difficult problem to diagnose and you should know that this type of problem can be challenging even for professionals with proper diagnostic tools.

You know how a container of liquid can inflate itself if left in the sun? (like one of those plastic gas cans)
Well the gas tank on your car would do the same thing if it wasn't vented. But the good ol' EPA doesn't want you venting gasoline fumes into the atmosphere so the vented fumes are filtered through a charcoal canister first. The gasoline molecules are trapped in the charcoal canister. While you are driving the vehicle at cruising speed, the purge valve is opened (by the car's computer) and allows your engine to suck in the fumes from the charcoal canister and burn them. That last bit is Purge Flow.

Check your vacuum hoses and the hoses coming from the charcoal canister to the purge valve and from the purge valve to the intake. If it all looks solid, I'd suspect your purge valve is either stuck or broken mechanically. If it is stuck you might free it up by taking it off and cleaning it. There is a way to test it but involves electrical knowledge and skill and you may have to put your mouth on it. (I'm talking about blowing air into it wile jumping power and ground to it in a very small connector).

Check that your intake is not clogged with carbon buildup where the purge valve connects. Some intakes have very small passages for purge flow that become clogged easily.

In rare cases the charcoal canister gets clogged.

My advice to novices is if you don't see anything obviously clogged or leaking, then just replace the purge valve. If that doesn't do it, take it to a good mechanic with ASE Certified Technicians.

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I don't know the name of the filter I need 1998 vw golf 2.0 4 cylinder manual


Follow the lines leading to the filter and lines leaving to see where they go,looked up Autozone's site,for filter's nothing,but I will keep looking.Does it have a odor of any kind?It may be a filter for the by-pass fumes coming from the valve cover,the fumes are usually burnt off.You can call dealer,ask for parts and ask them,they will tell you.

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1 Answer

My 1987 deville has been missing the intake hose that brings fresh air into the air pump. the hose before the inline filter is the part i need but can't determine if anything else is missing as w


The A.I.R. (Air Injection Reaction) System was included on California-emission equipped vehicles. The system is designed to provide additional oxygen to continue the combustion process after the exhaust gases leave the combustion chamber. The system begins with the outside air inlet, which is a short, L-shaped open-ended rubber hose running from the lower front passenger fender well into the canister. The black plastic round canister is located in the front passenger-side engine compartment, adjacent to the EECS (Evaporative Emission Control System) canister, which looks similiar, but the EECS canister has electrical connectors on the top. While the charcoal canister of the EECS is a sealed unit, the A.I.R. canister has a twist-off lid to access the disposable filter. The inlet hose goes into the canister, air then passes through the charcoal filter, and travels into the outlet hose (also made of black rubber), which then connects directly to a metal tube coming up the front of the engine. Please contact me if you need a diagram or photos.

Mar 13, 2012 | Cars & Trucks

1 Answer

I have a 98 Buick century that needs a new evap emission control system how do u replace it exactly and will that solve my code p0446 code problem to pass a smog test


It likely does not need the whole system in order to fix the problem. The most common cause for this code is the evap vent solenoid. It is located near the charcoal canister. If you locate the charcoal canister there will be a larger rubber hose attached to it. At the other end of that hose you will find the vent solenoid. There will be a red connector with two wires (usually red).

When the vent solenoid is unplugged air should pass freely. when power and ground are supplied no air should pass. so what you can do is remove it and see if you can blow through it. Then apply 12 volts to one pin and ground to the other and see if you can hear a click. If you can not than the solenoid is bad. If you can than try blowing through it. If you can blow through it it is bad. If you can not check for cracks along the rubber hose in between the charcoal canister and the vent solenoid.

The other thing you should check for is power to the solenoid. With the key on there should be power on one of the two pins. The computer controls the ground so unless you have a higher end scan tool you will not be able to check that yourself. If there is no power let me know and I will get you some wiring info.

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2 Answers

Where is the fuel filter located on a 2001 Malibu


if you look under the car in between the rear axle and the fuel tank it will be kind of hidden above the charcoal canister. The canister can be moved out of the way by removing the bolt with a 10mm socket.

You will need a 16mm & 20mm wrench to remove the filter. If it is rusty you may need a 16mm line wrench to get the connection broken loose.

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1 Answer

I am trying to replace the fuel filter and can't remove the inlet end. do i need a spec tool


Yes you need a special tool. I will do my best as to explain how it works. As you can see there is a small gap between where the inside of the hose that goes on and along the shaft of the filter. There is a spring in there. The tool you use inserts into that gap to open that spring. As the tool is in there you just pull off the line. They have those tools at your local auto parts store and if you just tell them you need that kind of tool they should know what you need. However there are different sizes but you can get the one that has a different size on both ends as to be sure you have the right one. Once you get the tool you will see how simple it really is. I hope you understood and I hope this helped. Good luck.

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I need picture of a 2001 chevrolet calvalier fuel filter and where its located on car engine... thanks


Look in between the rear axle and the gas tank right above the charcoal canister. Use a 16mm and a 20mm wrench on the threaded side and a 5/16"quick release tool on the other side. Sometimes the quick release side will have a black plastic piece that can be pushed into the fitting to release it from the fuel filter. Sometimes it is a blue or green clip that needs to be released to remove the line from the filter.

It is a lot easier to move the charcoal canister out of the way to replace the filter.

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