Question about 2005 GMC Sierra

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Code says charcoal cannister full,or solinoid not working or connection dirty. not causing problem except engine light is on. but recently fuel mileage dropped. i suspect oxygen sensor as vehical has 150,000 miles on it.

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  • seacraft69 Sep 27, 2009

    not sure what you mean. orange engine light is on in dash.

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  • Master
  • 375 Answers

The vent solenoid may be the Fault area. Please reply with what type of light it is. Check engine light or Service engine light.

Posted on Sep 27, 2009

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3 Answers

Runs good engine lt on code p0455


A loose gas cap or bad gas cap can cause this ,or filling gas tank while it running .or it could be a small leak in the evap system

Apr 21, 2014 | 2003 Jeep Wrangler

1 Answer

Malfunction indicator light jeep 2009 wrangler


I too have had the warning on the dash indicating: "GAS CAP". It is a generic code for anything to do with the fuel cap, filler hose, or overflow, including the charcoal cannister evaporative recovery system. Sometimes it is an easy fix, to simply replace the gas cap. If people consistently twist the cap past the point where it clicks, after closing = it can wear out the cap, and prevent a good seal. However, a large majority of people have overfilled their tank too many times and the evaporative cannister is full and the overflow line is clogged or kinked. Start with the cheap solution first, gas cap.
My problem started after running the extreme obstacle course at Daytona Beach Jeep Beach 2013 at which point I pulled the cannister off the bottom and had to replace it. There are no skid plates protecting it and it would be easy for sticks etc. to get jammed up in and around that cannister while even mildly off road. Crawl under and follow the filler hose down from the passenger rear of the vehicle. The charcoal cannister is approx the size of 2 loaves of bread and sits just forward of the axle, next to the drive shaft.
Good luck.

Mar 18, 2013 | 2009 Jeep Wrangler 3.8

2 Answers

P1457 honda light off but still reads code


The light on the dash, should do a bulb check when you first start the car. (bulb should illuminate for 3 seconds) after that the light will go out. then if there is a code in the computer it will come right back on . bulb could be burned out. a po 1457 is a evap code which is fumes or fuel vapores from the fuel tank .these fumes go through vacuum lines from the tank, back to the vacuum canister under the hood. then these vapors are purged to the engine to be burned with the fuel. you need to check all vacuum hoses going from the tank ,to the charcoal canister (vacuum canister) this is most cases about the size of a coffee can .around the front of the engine compartment. black plastic. with vacuum lines going to it. if there is a vacuum hose cracked, or off .it would cause a po 1457. service manual says- evaporative emissions ( evap) control system leakage (evap canister system) this problem is hard to repair eve for the skilled tech good luck

Sep 15, 2011 | 2000 Honda Civic

3 Answers

The gas tank accepts only a gallon or so of gas before clicking off. It takes a very long time to fill the tank.


SOUND LIKE EVAP CONTROL SYSTEM NOT WORKING.COULD HAVE STOPPED UP FUEL SOAK EVAP CHARCOAL CANISTER.OR THE PURGE SOLENOID NOT WORKING ALSO GAS CAP COULD BE FAULTY.HAVE THE EVAP SYSTEM CODE SCANNED.WHEN PUMPING GAS EASE THE GAS SPOUT OUT JUST A LITTLE SO YOU CAN PUMP GAS IN TAKE.REASON CAR WONT ACCEPT GAS BECAUSE EXCESS GAS VAPORS CAUSES PRESSURE TO BUILD UP IN FUEL TANK IN WHICH WILL KEEP GAS FROM BEING PUMPED IN FUEL TANK.

May 03, 2011 | Jeep Grand Cherokee Cars & Trucks

3 Answers

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:

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EVAP system:

jturcotte_1362.gif

Mar 29, 2011 | 2000 Pontiac Firebird

2 Answers

2001 hyundai accent, trouble filling gas tank


I have 2002 Hyundai Accent. When fueling, I had to trickle the fuel in to prevent the fuel dispenser from constantly shutting off. Even then I could only get about a quarter gallon at a time between fuel shutoffs. Would take 10-15 minutes to put in 10 gallons. Very frustrating. I found and fixed the problem today. There is a charcoal cannister that is part of the Evaporative Emissions control system. It is located inside the rear fender well on the driver side, behind the driver side rear tire. You cant miss it. Actually looks like a square plastic box and it has hoses coming out of it. I removed the entire charcoal cannister assembly in about 15 minutes. Follow carefully. First, remove the electrical connector to the purge control valve (this valve assemby is mounted to the side of the charoal cannister on a bracket). No big deal. Then disconnect the three hoses that come out from the cannister assembly on the one side that faces the rear tire. Two of these hoses are small diameter about 1/4" and one is larger at about 5/8 inch diameter. Then you remove the 3 bolts that hold the whole cannister to the car frame. Then the whole piece comes out. Once I got the cannister and purge control valve out of the car as a whole assy I found the problem. The larger of the 3 hoses you disconnected as well as the port it connects to on the cannister was packed with the small charcoal pellets and actually formed a solid plug inside that larger hose. I had to stick a screw driver through that hose to knock the plug out that those charcoal pellets had formed. It all makes sense now. When you fill the tank with gas, you also push out air and vapor from the gas tank that is being displaced by the rising fuel in the tank. That vapor is supposed to go through that larger hose to the charcoal cannister where the fumes are removed by the charcoal. If that hose is plugged, like mine was, then the vapor has nowhere to go as you fill the tank and it increases pressure within the tank it causes the fuel dispenser nozzle to shutoff because it keeps detecting a pressure increase within the tank. That's my theory. I don't have the Hyundai design prints to confirm it. I had to tilt the charcoal dispenser so that the pellets came out of that larger hose port on the cannister. Like I said, even the port itself was full of pellets. So I poured out enough to clear the pellets that were in the hose port. I cleaned out the hose. Put everything back and went to go fill with gas. I filled that tank at full bore with no problem. Have the dealer or your mechanic check the ports and the hoses off the cannister. If they are filled with charcoal pellets, that is the problem. That should cost less than some of the fixes I have been reading about here.

Feb 16, 2010 | Hyundai Motor 2002 Sonata

1 Answer

Evaporative system


The system consists of a charcoal cannister that collects gas vapors from the fuel tank. It stores these vapors until certain engine conditions are met, and then a purge valve/solenoid opens and the vapors are used in the combustion process. A faulty gas cap will cause the problem if it is not sealing or venting properly. A bad purge solenoid could also not be allowing the cannister to purge and the cannister could be full.

That's a basic synopsis. Hope this helped and best wishes.

Jul 25, 2009 | 2001 BMW 5 Series

3 Answers

Strong fuel odor coming from left front fender by air filter ,also a lot of pressure build up in tank when you remove cap kmkaren56.@bellsouth.net


If the check engine light is on, take the car to an autoparts store and have them use a scan tool to retrieve any fault codes stored in the computer. Most autopart stores offer this service at no charge. There could be a problem with the evaportative emission control system. There is a charcoal cannister that stores gas vapors and when conditions are right, a purge valve opens and the vapors are used in the combustion process. The cannister can get full of vapors and if the valve/solenoid is bad, it cannot purge itself of the vapors. Also integral to the system is the gas cap. A faulty gas cap can cause problems within this system. I am not saying that the evap system is the cause, but the pressure build up in the tank makes me suspicious. Get the codes read and it will help narrow things down for you. Sure hope this helped and best wishes.

Jul 23, 2009 | Buick LeSabre Cars & Trucks

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

Jun 03, 2009 | 2002 Chevrolet Blazer

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.

Apr 22, 2009 | Dodge Neon Cars & Trucks

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