fuel gauge stuck on full

[ram1500rsm]

Yes it will reset if the old cap was not sealing rigth. Just drive couple of miles and the message should go away.

 

[Waken305]

Hello Ram forums, I’m new to the message boards. I have the exact issue as this post. Received a fuel sensor warning and gauge went to empty. Took it to the dealership near my area and had the fuel pump replaced.I picked up the truck two days ago and noticed the fuel gauge is stuck on full despite putting quite a few miles on it. I ended up takingthe truck back to the dealership and had them take a look,it appears they will have to order another fuel pump…I guess my question is, do you think a new fuel pump will fix this issue or is there another part that may need to be checked? The fuel pump won’t get here for another month, I want to make sure they order everything needed. Any advise is greatly appreciated.

 

[Jeepwalker]

Vehicles are way more complex nowadays. Lot more emission parts/wires, etc. Could be a wire not fully plugged in by the tank, something with the evap module, or mayby a fluke new issue(??). I'm glad you're giving them a chance to make it right. Not all batters hit the ball out of the park on the first pitch, ...or swing.

 

[Ron_M]

Hello. I was wondering if OP problem was ever resolved? I have the exact same issue on my 2014 Express. Gauges were reset via the Chrysler tool. Plan is to check the connectors to ensure they are seated and maybe disconnect battery power for 15 minutes.

 

[Dean2]

The "Check Fuel Cap" message will reset itself but the cause maybe related to the problem with your recently installed fuel sending module.
The reason why the fuel cap message shows up it the truck detects an air leak within the fuel system.

Very likely to be the issue. I find it unlikely the gas cap has now failed this close to the pump fix. If they didn't seat the new pump and seal properly you will get an air leakage and the fuel cap warning will pop on.

Will be interested to hear what the issue was.

 

[Gom]

I can't believe I never updated this post. I know I have mentioned this in other threads but here was the final story on the fuel pump replacement.
So I had to take the truck back again, they were convinced that it was a fuel cap issue and I asked if the dropped the tank and they said they were confident in their diagnosis. Cleared all codes, gave it back.
Fine.
I need to fill it up, it's empty.
Gas nozzle clicks off after a couple seconds and then clicks off immedietly. I was getting hot at this point because I am convinced it's a venting issue of some type.
So I go to a different gas station to make sure it's not the pump.
Same thing, can't pump gas into it.
So, done with this mechanic.
Off to the dealer.
Explain the story.
Next day I get a call from them and they tell me the independent shop left a tool on top of the tank and it was pinching the vent line. They were very appreciative of the free tool they got. No charge for this.
They then inform me I have broken exhaust bolts. Fixed under warranty, they had to keep it another day but I was thrilled.
So the dealer didn't cost me a nickel.
People make mistakes, but if a shop refuses to stand behind their work and fix their mistakes, they are dead to me.

Needless to say never going back. Wife went back to the independent dealer one more time for just a oil change. As we pulled up to pick it up the hood didn't look shut tight. It was shut when I tugged on it but very uneven. Popped the hood, and it didn't want to pop but it finally did. A bungee cord was slammed between the hood and top of radiator. What a bunch of hacks.
Sorry I never updated this story, going off the best of my memory.

 

[Ron_M]

Thank you Gom for the update. You didn't say if your gauge now works though? Mine is stuck on full and yesterday I was "blessed" with a check engine light for P0461 fuel lever sensor. My next step is to check the electrical connections actually everything surrounding the tank.

 

[Gom]

Thank you Gom for the update. You didn't say if your gauge now works though? Mine is stuck on full and yesterday I was "blessed" with a check engine light for P0461 fuel lever sensor. My next step is to check the electrical connections actually everything surrounding the tank.

Yes, after the fuel pump replacment it worked. I think I was mistaken in thinking I had half a tank, I think I had filled it before taking it to the shop wondering if that would make the needle move and I mostly fill up at half a tank anyway. That probably was a bad move for the guy who had to drop the tank when it was full.
But long story short, they pinched the vent line after replacing pump and sensor and it was throwing the gas cap warning and I couldn't fill the tank up once it emptied.