Fiat 500 Forum banner

41 - 56 of 56 Posts

·
Registered
Joined
·
44 Posts
Just have to pull the gun out of the tank a bit, if the sensor detects (by smelling) that the density of gas is high enough, the gun jumps.
 

·
Registered
Joined
·
393 Posts
This happened to me once. I just sort of shoved it (the nozzle) in and out and in and out and that was that. No problems since.
 

·
Registered
Joined
·
2 Posts
This is still happening to me, definitely a venting issue. I’ve found it a bit easier to fill the tank when it’s cooler weather or at night (I’m in Florida), I have to hold the nozzle as far out of the filler neck as possible or it constantly clicks off. Has anyone replaced the charcoal canister? Thanks!?!?
 

·
Registered
Joined
·
1 Posts
This is still happening to me, definitely a venting issue. I’ve found it a bit easier to fill the tank when it’s cooler weather or at night (I’m in Florida), I have to hold the nozzle as far out of the filler neck as possible or it constantly clicks off. Has anyone replaced the charcoal canister? Thanks!?!?
On another forum this solution worked for several people - I have not tried it yet as I just read it this morning - my car has the same problem filling with gas - try this :
Remove the two 16mm bolts on front of the rear seat and lift it. I did not remove it, just pushed it up. Take out the four screws holding the tank cover off, and pull it up. You will see the top of the gas tank valve assy. The big hose is the vent. Give the top a whack and see if it fixes it. Mine worked like a champ.
 

·
Registered
Joined
·
913 Posts
Roll over valve is stuck in the sealed position trapping air pressure in the tank. Rap on it as suggested. If this happens repeatedly due to being gummed up, keeping a full tank for a while might help cleanse it of what residue might be causing it to stick.
 

·
Registered
Joined
·
2 Posts
On another forum this solution worked for several people - I have not tried it yet as I just read it this morning - my car has the same problem filling with gas - try this :
Remove the two 16mm bolts on front of the rear seat and lift it. I did not remove it, just pushed it up. Take out the four screws holding the tank cover off, and pull it up. You will see the top of the gas tank valve assy. The big hose is the vent. Give the top a whack and see if it fixes it. Mine worked like a champ.
My 2012 had the same problem. Your fix worked. I used a small rubber mallet all around te base a
nd a couple of taps on the tube assembly. Thank you!
 

·
Registered
Joined
·
1 Posts
Hi, I have a 2012 500 S and I have had the same problem. I had one mechanic look at it once, he said he just took a hose brush too it to see if there was any gunk or anything blocking the passage. Said his brush came out clean, so he didn't charge me anything because he didn't think he did anything. But for about 7 months the problem went away. Now its back again. I have tried pulling back the ring from the nozzle, and going to different gas stations. Still the problem persists. Which the gas station thing doesn't make sense anyway because I usually go to the same station by my house which works when the tank isn't giving me problems, and it doesn't work when it is.
I am going to try and see if I can get someone to just take a brush to it again, because that worked for a bit. but if it doesn't think time I might try some of the other suggestions.
 

·
Registered
Joined
·
972 Posts
It sounds like his brush bumped the roll-over valve, where the rubber hose attaches to the tank. A permanent fix is to replace the tank.

I had a mechanic tell me about using a plumber's snake to bump the valve on some cars. I guess he wasn't pulling my leg.
 

·
Registered
Joined
·
1 Posts
I bought a new car and gave my 2012 Fiat Abarth to my Fiance. She told me it was taking forever to fill the tank, must say I thought she was doing something wrong, until I tried it myself...took ~15 minutes to fill the tank, had to dribble it in. Took it to a mechanic, he said the tank would have to be replaced, that it's a known problem with the rollover valve in Chrysler autos.(of course Fiat is Mopar/Chrysler)
Thinking there must be some way to resolve this w/out spending $2K and why would they put a valve inside the tank, that can't be replaced, GRRRR!
Saw another thread where a guy tapped the top of the tank with a rubber mallet, going to give that a try, before doling out $2K for a new tank.
 

·
Registered
Joined
·
3 Posts
Hi all,

I've searched and haven't found anything that matches, but apologies I'd I missed something...

When I stop to fill up the gas tank the pump constantly clicks off, as if its full. This has happened both times (still so new that I've only had to do this twice), at two different stations. I've tried positioning the nozzle differently, squeezing for slower flow rate, but nothing helps. So I've had to go with my best guesstimate based on the amount of fuel I think I've used and fill-click, fill-click, fill-click until I get close to that point. Apart from making it impossible to check mileage or know when the tank is full, it's really annoying!

Anyone else run into this? For the record, I've been filling gas tanks on cars for a whole lotta years, and this is definitely an anomaly.

Thanks in advance for any tips or commiseration!

- Kevin


Sent from AutoGuide.com App
Had the same problem with my wife's 2012. It is a stuck rollover valve to prevent gas from escaping should the vehicle turn upside down in an accident. Finally fixed it but have not yet gone through a full tank. I did fill it with ease after the fix. Steps I used: 1. Removed 2 16mm bolts and lifted back seat bottom. and tied it up against rear headrest. 2. Removed 4 Philips head screws and cover plate from location above gas tank. This will expose the hoses attached to the top of the tank. 3. Vacuum all dust and debris from the canister. You will see 3 hoses. A large and small one on the left and a small one on the right. There is also a 12V electrical connector coming off the rear. The top of the canister is semi transparent. I then carefully depressed the retention pins on the Small Left Side hose and removed the hose. 4. Open the gas filler cap. (You now need an air compressor and about 12 inches of .25 inch inside diameter gasoline or similar hose.) 6. Set the air compressor to 90 psi and attach a trigger activated tapered nozzle to it. 7. Gently attach one end of the hose to the fitting for the removed Small Left Side hose. 8. Depress the trigger in a series of short bursts. You should hear the stuck rollover ball pop free as you stop each burst. I continued with the air bursts about 50 or 60 times and you can see the either a flap or the ball move inside the translucent top of the canister. 9. Reattach hose and reassemble all items. This should solve the problem. It did for me.

Good luck and follow up. Hopefully my wife's will not stick again. She is at 70,000 miles and this little car has been flawless.

Ray. navyvet67
 

·
Registered
Joined
·
2 Posts
Thanks all, for the quick feedback. Looks like maybe this is just a sensitive filler neck and maybe more prone to being triggered by more aggressive/higher pressure pumps? I'll keep trying to find the sweet spot, then, for the pump nozzle and see if I can get it to stop clicking off constantly.

The good news is that my mileage so far has been so good that I don't get many opportunities to keep testing this process. :)

- Kevin


Sent from AutoGuide.com App
I'm having the same issue with my care & I've had it for 5 years now & this just started! Several different gas stations & pumps. Not sure what's wrong with it! I've tried pulling it out, pumping slower etc... & still same issue!
 
41 - 56 of 56 Posts
Top