Gas pump keeps shutting off

[descolline]

I have the same problem. 07 model. I did not have the problem during first winter, but this year two fill-up & both times I had to fill very, very slowly. I am in northern NM & it seems to be worse when the weather is cold.

[Gwydion]

I have the same issue on my '08 purchased this summer. Sometimes everything works fine, but at others pumping stops immediately. I find if I pull out the nozzle a little bit (not too much) I can pump freely and autostop still works.

[edthefox5]

This has been discussed forever here. I have learned with my 07 to let it air out a little before fueling after my first gas belching episode. The zero fuel vapor emissions mission and the fuel recovery system on this car coupled with the plastic bladder has made this car very hard to fuel. Try this and you will have no more problems:
When you go to the gas station open the gas fuel cap. Leave it open without the gas pump in it and go inside for a bit. Those few minutes of tank venting will allow the tank to breath and expel trapped air and allow the bladder to relax. By the time you come out it will be good to go. Stick the pump in it on very slow fill and hang the pump up on the first auto click off and your fueling troubles will be over. I have cut a piece of wood 1/2 inch wide to jam under the pump handle which pumps very slow. It now clicks off on a full tank first click. Perfect.

[PaulTomblin]

I got my Prius this September. So far I've only had to fill it up 9 times, and until yesterday every time but one I've had this problem with the first gallon or two, but then it would settle down and I could fill normally. But yesterday's fill up was an exercise in frustration and anger - it would only pump for a second without shutting off no matter how slowly I filled. It's the first time I've filled it up in below freezing temperatures, so I wonder if that is the problem.

I tried various combinations of pumping very slowly with the nozzle fully in, partly out, twisted to one side or the other. I even tried pumping with the nozzle not through the restrictor at all, and the gas was going down through the hole at first but after a second a big slug of gas came shooting out. All in all, I spent about 15 minutes at one gas station getting ~4.5 gallons, and then another 15 minutes at another station getting another ~4 gallons.

Every other car I've owned, including two Corollas, has had a hole in that restrictor plate for air to come back out. I assume that the Prius supposedly doesn't need it because of this flexible bladder people have been talking about in this thread.

My wife's 2005 Prius doesn't have this problem. Is is possible that my car's bladder isn't flexible enough?

[deetee]

YOU MAY HAVE SUGAR IN YOUR GAS TANK!!! I just found this out because my car did the exact same thing yours did. I took it to the shop because my car kept stalling. See if someone will take a look at it for you. It may cost you about $100-$200 to fix it.

[qbee42]

Originally Posted by deetee

YOU MAY HAVE SUGAR IN YOUR GAS TANK!!! I just found this out because my car did the exact same thing yours did. I took it to the shop because my car kept stalling. See if someone will take a look at it for you. It may cost you about $100-$200 to fix it.

This thread is about filling issues, not stalling engines.

Tom