I got back from a 7 month deployment to Afghanistan in October. Ever since I got back, it has been hard to put gas into the tank. The gas pump (at the gas station) constantly shuts off when trying to fill the tank. It takes about 10 to 15 minutes to fill the tank at the gas station. It's not the nozzle, and not gas station ion pump.

When I turn the ignition off on my truck, I can hear the leak detection pump, or something in the same vicinity run for about 5-10 seconds. When I had issues with the pump in the past, it ran like this as well.

I replaced the vacuum leak detector pump about a year ago, it had corrorde, and given me a P0499 fault code. I currently do not have the check engine light on, or any fault codes, but I would like to correct the issue with filling the gas tank.

I did not have any issues with the truck prior to parking it last March. However, when I got back in October it had issues.

Any ideas? Thank you!

 

Try letting the truck idle for 90 seconds at the pump before shutting it off and pumping.
That's one of the steps in a TSB regarding this issue.

 

Do you drive in any dusty or dirty locations?

 

Mxstar,

Below is a copy of the TSB talked about in the post above.

NUMBER: 14-001-09 REV. A
GROUP: Fuel
DATE: September 1, 2009

SUBJECT:
Hard To Fill With Fuel Or Fuel Nozzle Shuts Off Repeatedly
MODELS:
2004 -2008 (CS) Pacifica
2009 (DS) Ram Truck (1500)
2007 - 2009 (DH) Ram Truck (1500/2500 Pick Up)
2004 - 2009 (DR) Ram Truck (1500 / 2500 Pick Up)
2005 - 2009 (HB) Durango
2007 - 2009 (HG) Aspen
2005 - 2009 (ND) Dakota
2009 (JC) Journey
2007 - 2009 (JK) Wrangler
2007 - 2009 (J1) Sebring (China CKD)
2007 - 2009 (JS) Sebring/Sebring Convertible/Avenger
2006 - 2009 (K1) Cherokee (CKD)
2007 - 2009 (KA) Nitro
2008 - 2009 (KK) Liberty
2008 - 2009 (KK) Cherokee (International Markets)
2005 - 2007 (KJ) Liberty
2005 - 2007 (KJ) Cherokee (International Markets)
2005 - 2009 (LE) 300C/300C Touring (International Markets)
2005 - 2009 (LX) 300/Magnum/Charger
2007 (L2) 300 (China)
2008 - 2009 (LC) Challenger
2004 - 2009 (PT) Chrysler PT Cruiser
2007 (R2) Caravan/Voyager (CKD)
2005 - 2007 (RG) Chrysler Voyager (International Markets)
2003 - 2007 (RS) Town & Country/Caravan/Voyager
2008 - 2009 (RT) Town & Country/Grand Caravan
2008 - 2009 (RT) Town & Country/Grand Voyager (International
Markets)
2005 - 2006 (TJ) Wrangler
2005 - 2009 (WH) Grand Cherokee (International Markets)
2005 - 2009 (WK) Grand Cherokee
2006 - 2009 (XH) Commander (International Markets)
2006 - 2009 (XK) Commander
NOTE: This bulletin applies to all vehicles equipped with a gasoline engine.
DISCUSSION:
Customer may report that the vehicle is hard to fill with fuel or that the fuel pump nozzle
shuts off repeatedly while trying to fill vehicle.
This customer complaint can occur due to a number of different causes. The fuel tank is
the least likely cause of this condition. The following Diagnostic procedure can be used to
diagnose the issues.
DIAGNOSIS:
1. Is the vehicle a LX/LE/LC/L2?
a. Yes >> proceed to Step #2
b. No >> proceed to Step #4
2. Idle the vehicle 60 to 90 seconds upon stopping.
3. Does tank refill properly?
a. No >> proceed to Step #4
b. Yes >> Inform the customer to idle the vehicle for 60 to 90 seconds upon stopping if
vehicle was driven aggressively. This is due to the fact that on the LX/LE/LC/L2 the
fuel tank is a unique saddle tank design and needs 30 to 60 seconds while the
engine is running to level the fuel in both half's of the fuel tank. Allowing the vehicle
to idle for this amount of time will let the fuel pump transfer fuel to the left side tank,
opening the control valve and allowing normal fuel filling.
4. Disconnect the vapor recirculation tube at the fuel tank.
5. Attempt to refill fuel tank.
6. Does tank refill properly?
a. Yes >> Proceed to Step #7
b. No>> Proceed to Step #11.
7. Reconnect the vapor recirculation tube at the fuel tank.
8. Disconnect the other end of the vapor recirculation tube at the fuel filler tube.
9. Attempt to refill fuel tank.
10. Does tank refill properly?
a. Yes >> Replace fuel filler tube.
b. No >> Replace the vapor recirculation tube.
11. Disconnect the control valve to EVAP canister tube at the fuel tank.
14-001-09 REV. A -2-
12. Reconnect the vapor recirculation tube at the fuel tank.
13. Does tank refill properly?
a. No >> Replace Fuel Tank.
b. Yes >> Proceed to Step #14.
14. Reconnect the control valve to EVAP canister tube at the fuel tank.
15. Disconnect the control valve to EVAP canister tube at the EVAP canister.
16. Attempt to refill fuel tank.
17. Does tank refill properly?
a. Yes >> Blockage is in the EVAP Canister, or ESIM, or Clean air hose (ESIM vent
hose), or filter. Diagnose appropriately.
b. No >> Replace the control valve to EVAP canister tube.
POLICY:
Information Only

 

No, just the saltwater air that Hawaii offers. I was wondering if the vacuum leak detect pump had gone bad again. It went out before, the terminals were corroded. Just a pain to check. Either drop the tank or remove the bed...

 

Awesome place to start! Thanks for all of the help guys! I don't think it's the let it sit for 60-90 seconds though. The truck took fuel fine before I left, it's just after it sit that it's now having problems. This is a good checklist though.

Thanks for the advice!

 

You are correct about the 60-90 seconds sitting part as that pertains to different models than what you have.

 

I tried the stuff in the bulletin, and according to it, I need to replace the fuel filler tube. Any ideas what would cause that to need to be replaced? It was fine, but the truck sat for 7 months and that is when I had the problem. I don't see any cracks in the filler tube or deteriorated tubing.

I had codes P0456 and P0457, I cleared them, and they haven't came back after about 20 miles on the truck. I am getting the gascap message on the odometer. I tried replacing the gas cap as well. I disconnected the battery after replacing the gas cap, but the gascap message came back.

Thanks for any additional assistance. Just seems really strange to me the filler tube needs to be replaced. I want to make sure before I drop the money on it as it seems a little pricey.

 

So are you dealing with a hard to fill issue or are you trying to get the gas cap light to turn off? I cannot confirm why the filler tube replacement is listed in the TSB but I can tell you that it is only listed as a cause for slow fuel fill, not as a possibility of why the cascap light is coming on.

 

The tank is hard to fill and I get the gas cap message on the odometer. It seems really strange. I haven't found any cracked hoses either. I have tried resetting the computer by disconnecting the battery, but the gas cap message on the odometer pops back up.

The check engine light is not on. I did have P0456 and P0457 a couple of weeks ago, but they have not came back.

Thanks a lot for your help!