Same fuel tank issue?

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dsherman26

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So I've been seeing various fuel tank threads about filling problems, but most of them seem to be that the faulty vent makes it shut off well before it's full, and you have to fill it slowly to overcome that. Mine has started something where it fills, but when it shuts off it's just a hair below full, though once it stopped and the gauge read 7/8ths. I can hear the fuel coming up up the neck just before it stops. If I do the taboo thing and fill it some more then I can get the gauge up to the full mark. Is it the same vent problem? It just hit 38,000 miles today, just a tad out of warranty.
 

Tulecreeper

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If you can hear the fuel coming up the neck right before it shuts off, then your tank is full. If you gauge still doesn't read "Full", then it's a gauge problem not a filler/tank problem.
 

GrantOv

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Just to provide some input to help others - I had the filling issue all winter long. Very, very slow fills in the bitter MN winter. I was pissed and almost followed dealer recommendation of updating the tank but then heard that this didn't always solve the issue. Then come late March with some mid 50's temps and overnight my problem just disappeared! I've now filled it up like 10 times at the same stations and pumps full bore. Zero issues to report.

I don't understand the mechanics of the vent tube completely but I'm guessing condensation froze and plugged this up. I'm wondering how many RAMs that were having problems, still have problems in the warmer months? And if they also park their vehicles outside year round - even in the colder weather. Just trying to line up some correlation to what I seen with my vehicle.

Also - the reason I ask is that I'm willing to bet I see this next winter since I did nothing to change the situation.
 

T-square78

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I took have had the dreadful gas tank fill issue,had to deal with what felt like 30 minutes to fill my tank for almost 2 years ( 18 1500 5.7, 26 gal. ). Then about 2 weeks ago it suddenly fixed it's self, I'm able to squeeze the gas nozzle at full flow until the tank reaches full before it cuts off.
Thinking about it, the only thing I did out of the ordinary was I ran the tank until the gas light came on for the very first time, on average the lost I'll let it go is 1/4 tank. Upon fill the tank I realized that I was able to run the pump at higher flow rate without it cutting off, full flow It is until the pump stopped. I then checked my gas gauge which read "FULL" This prompted me to try it again, and again, without fail it worked flawlessly each time there after.
It is possible that the rollover vent valve gets stuck due to over filling, but due high pressure build up in the tank it stays stuck. By running the tank extremely low it my have created a negative pressure (vacuum, suction) in the tank thus pull the valve down in the flow position. I can't prove this theory, but it the only one that makes sense in my situation and I figured I would share it with rest just in case it works.
Heck saved myself from purchasing a new tank, which I was going to do before the winter ❄️. I couldn't go another Winter with the dreaded trickle flow tank fill up.
 

mnchopper

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Mine has the same problem and it sucks there is no help from the dealers unless you want to pay big bucks, I went to arizona last winter and it was a pain in the ass but after being down there for the first two months it started to take fuel atleast up to 3/4 tank then it would be finickey and then in april it started to go back to what it was doing before, Im sure it has to do with the fuel tank venting and am thinking of adding another vent and tee it into the existing vent after the charcol canister unless there is a hose type roll over vent available that does not need to be mounted in the roof of the tank. my 2009 did not have this problem and I had over 230000 miles on it, my 2019 started at about 65000 miles.
 
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