Can't Fill Gas Tank On My 2001 Blazer - Pump Shuts Off


Problem with my 2001 Chevy Blazer 4.3. Check Engine code P0446. Changed a vent valve on intake, but did not fix issue.
I had the trouble code pulled from my blazer which was P0446, before i tried to attempt to fix this issue i was out and needed fuel, but when i went to put fuel in the blazer i started to pump the fuel into the tank and the pump would only stay on for about 3 to 5 seconds and shut off.

I tried 3 different fueling stations to make sure is wasn't a gas pump issue. I have filled this truck up 100 times or better without any issues until today. I also noticed a lot of pressure being released from the fuel tank when i remove the fuel cap. Any help would be greatly appreciated. I suspect some type of venting problem, but not sure.

 

 

Answer: Well, first off, code P0446 does not refer to the EVAP purge valve. This is the valve on the engine that you replaced. This code is for the vent solenoid. That is in the rear of the truck, under the spare tire. This would part being bad would also explain the problem you are having filling the gas tank. When this valve sticks, is does not vent, so the gas station pump feels the back pressure and shuts off. I would go ahead and replace that valve. It is only about $15 at most large national parts stores.

 


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  • Guest - JEFF

    MY 1998 CHEVY S10 BLAZER WILL NOT START, JUST TURNS OVER , IF I SPRAY STARTING FLUID OR POUR A LITTLE GAS DOWN THROTTLE BODY, ITLL RUN UNTIL DRIES UP. IM GETTING GOOD SPARK AND CAN HEAR FUEL PUMP TURNING ON AND RUNNING JUST DOESNT SEEM TO BE GETTING GAS UP FEUL LINES AND ABSOLUTELY NO GAS PRESSURE, HELP

  • Guest - jglennon51

    I removed the vent valve and now i can fill the tank

  • Guest - Levi

    I have the same problem; have replaced the charcoal canister, EVAP vent valve, and the EVAP purge valve; still have the problem...what else could it be?

  • Guest - Tom

    In reply to: Guest - Levi

    If you have replaced these things then you may just have a plain old restitution in the full neck. It is possible someone put something in the tank. Look down the filler with a flashlight,.

  • Guest - Robert

    I have a 2002 Jimmy and had saeproblem not taking gas. The fault is not the purge valve but the charcoal canister. I remove the inside lins , closest to spare tire and voila it takes gas. The canister is plugged. Exspensive here in Canada, $450.00 but $200.00 in USA> Go figure.

  • Guest - john

    Gas tank spout fills up fast gas won't go down

  • Guest - Chevy Blazer owner

    Would a bad vent solenoid have the same affect on the fuel flow even if it came from a portable gas can? I can't even put gas in using a funnel without it constantly overflowing?

  • Guest - Aerial

    In reply to: Guest - Chevy Blazer owner

    use a gas can that has a spout with 2 channels, 1 for gas and one for vent and you'll be ok, I have to use same can for refuelling.

  • Guest - Bill

    In reply to: Guest - Chevy Blazer owner

    Yes, it can, but are you sure the gas gauge is correct? Maybe its already full.

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