I have a 2007 v-6 w/manual Tranny. I know there are others that have this problem as I saw it on the GT side. My father has it with his lincoln. No one seems to know about the fix. there is a TSB but the recall replacement does not resolve the problem according to others who have gone through it
My theory. heat from the exhaust pipe coming too close to the gas tank (which is under presure) is raising pressure in the tank (and therefore volume) and making a refill a very time consuming process. as you slowly fill it with gasoline which is cool, temp and pressure comes down and allows more and more gasoline into the tank.
I note that this only happens when the car has been running. the hotter the exhaust the slower the refill. I refilled this morning when the car had not been running and it refilled properly without incident. It also is not as bad when driving in colder temps on the highway. The other day after running for an hour and the tank down about 11 gallons down, I could only get 3 gallons in before it went super slow.
Before I put some heat wrap or heat shielding around the exhaust, I am just curious whether others have had this and what they did if anything that actually resolved the problem other than what I am going to do.
i had this problem when i first bought my 07 gt. but for the last 5 months i havent had a problem....i didnt do anything but it somehow went away. not sure what it is....and i usually refill after driving home from work which is about 30 miles on the freeway.
I've seen several posts with pics on various car forums where the heat wrap has caught fire and burnt up the vehicle. Yes, lots of companies sell it but that doesn't mean it's good. Several exhaust manufacturers even state in thier warranties that putting heat wrap on instantly voids thier warranties.
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2005 V6Mustang coupe. Automatic. Black with Charcoal Interior
Mods: JLT CAI, Bamachips 91 race tune, single Mustang V8 muffler, Mustang V8 swaybars
Looks: smoke front turn signals, sequential taillights, 14" shorty antenna, MRT rear window louvers and a little chrome for the interior 2000 C5 Corvette convertible, Torch Red with Black Interior. Full of options, Corsa exhaust 1990 Ford Bronco 351ci engine- it runs.
I've had that same problem ever since I got mine over a year ago. I heard it was a defect on the assembly line with the tanks themselves and Ford claims this was a problem only with 05s. Mines an 06 and definately shuts me off after only getting it up to maybe 1/4 tank, but this is mostly at cheap gas stations. When I switched to Chevron, Union 76, and Shell, I stopped having that problem as much. Maybe better stations take better care of their equipment or just have better equipment, I don't know. Since I switched 3 months ago, it's happeneed only twice.
I flip the nozzle upside down. That solves it every time. From what I understand, it's covered under warrenty and some people have had the tank switched. I don't know if that solves anything.
Flip the gas pump upside down and fill it thT worked for me as well. Cant usually get a gallon in so i just do that all the time now and no problems. On th other hand i have a 05 v6 and took it to the dealership. They told me it was a warranty issue and have ordered me a new tank.Hope that helps!
I have an 05 and 07. I very seldom have the issue.
Now as soon as I pull into the station pump, the first thing I do is remove the gas cap, and then do the card swip, grade selection etc.... i think this give the tank some time to get air in it or release any vapor locks. Just a thought.
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07 Mustang GT Vert, 5 sp - Redfire His Toy
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05 Mustang V6 Coupe, 5 sp - Redfire(Her Toy)
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There've been loads of threads on the gas tank fill issue. Ford has a TSB but I think it was for the 05's and maybe some 06's. Some folks have had the tank replaced and still have the problem though. There was another possible solution that has surfaced. The tank venting system has a filter that can get clogged with road-poo. See this link for an explanation: 05+ Gas Tank Fill Problem Fix - WWW.S197FORUM.COM .
My 06 has not had the problem (yet), so I haven't gone hunting for the solution.
I read in this forum that guys who went in for the warranty gas tank replacement said it did not resolve the problem.
I saw and tried holding the pump upside down and that did not work. I saw the thread about the filter. That cant be anything other than a symptom as three days ago I could not get more than 3 gallons in (without waiting) with the car having been driven 80 miles and then the next morning with the car cold I filled up the balance of 8 gallons in one shot without a problem. If a filter was the problem, the problem would be there consistently (restrict one day and not restrict the next.
I was thinking of driving with the pressure gas cap off to see if that alleviates the problem as someone mentioned above. It might help.
all of those who had the problem go away, was it permanant? did it ever come back in the summertime? Do you live in a cold place? Remember it is still pretty warm in Miami beach this time of year. It has to be about 80 degrees out there today.
Ok so heat wrap is a bad idea. what about heat shielding? did anyone try that?
daro, I feel your pain. When I frist noticed some threads on this topic it seemed to me that the problem surfaced in colder weather more than warmer. But you live in JimmyBuffett land where it's warm all the time and are reporting the opposite.
I think driving with the gas cap loose will cause the computer to throw some codes, but might be worth a try. I don't think it'll do any permanent harm. More knowledgeable voices can comment for sure on that.
yes, where are the techical guys to figure this out?
I think it is not just heat. I think the layout of the gas tank being mid-car and the exhaust pipe (not the exhaust can) running right smack in the middle of it is complicating the matter. At certain RPM in all motors there are negative waves which suck exhaust back towards the motor. Exhaust valves then close trapping the hot exaust in the pipe for longer than normal. I think if you are unlucky enough to drive at these RPMs for too long you will keep hotter exhaust in the pipe close to the tank for longer than the engineers expected. The extra heat will cause pressure to build causing the refueling problem. This may explain the erratic nature of the problem.
This is why I think the heat shield will work. I am wondering if anyone tried this and what were their results. No one out there has tried this before?
Might have problems with a loose gas cap. I know that some of the luxury sedans will throw a check engine light if the pressurized cap isn't tight. Sheesh, everything is computerized anymore. I dread the day computers get into my bathroom and my toilet seat starts talking to me to tell me how much suction pressure it has during the flush.
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2005 V6Mustang coupe. Automatic. Black with Charcoal Interior
Mods: JLT CAI, Bamachips 91 race tune, single Mustang V8 muffler, Mustang V8 swaybars
Looks: smoke front turn signals, sequential taillights, 14" shorty antenna, MRT rear window louvers and a little chrome for the interior 2000 C5 Corvette convertible, Torch Red with Black Interior. Full of options, Corsa exhaust 1990 Ford Bronco 351ci engine- it runs.
The best explanation I got in this forum was the filter theory. And it is posted up there, but it did fix the problem. I have not done it myself but it looks like a great idea
well although i dont have a problem fillin up i have the gas gauge issue. but in my technical background of being a tech i can tell you drivin with the cap off is definately either gonna set a cap off dtc or a large evap leak code. the problem with filling up is either gonna be the tank not breathing or displacing air as you fill up due to what some have suggested as a clogged tank filter or perhaps a clogged or more likely a kinked breather hose for the tank, resulting in vaporlock. Or fuel flow impedence or restriction when filling. at the end of the filler tube at the tank there is a checkball that prevents fuel from leaving the tank and coming back up the filler tube. how it works is when fuel is entering the tank it unseats and lets the fuel in and when your done it reseats. if it doesnt unseat fully like it should the fuel will back up the tube and shut the pump off or give fueling problems. either way it should be covered under warranty as a checkball is part of the tank and could get pricey. just my professional 2 cents because nothing surprises me anymore, ive seen it all. anybody else wanna take a stab at it?
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2006 V6 Pony Package 5 spd in Satin Silver - rear tinted windows 20%, Magnaflow Dual exhaust conversion with GT bumper, custom x-pipe, CDC chin spoiler, C&L Trueflow intake with Bamachips tunes for Xcal 3, Hurst Competition Plus short throw shifter removed - back to stock, roush hood scoop, painted mirror covers, painted calipers, done for now.
that theory sounds rational and likely. since the symptom is not consistent, the question is why does it happen sometimes and not others. it could be just a random problem with a faulty check valve but it happens to me only when the car is warm or hot and not when the car is filled immediately upon starting after not being drven for many hours. since the obvious difference is heat, it seems heat from the exhaust pipe and therefore increased pressure is stopping the check valve from opening. then when the gasoline in the neck fills up, the gasoline pump shut offs but the weight (and less heat) of the gasoline overcomes the pressure and opens the check valve.
that theory sounds rational and likely. since the symptom is not consistent, the question is why does it happen sometimes and not others. it could be just a random problem with a faulty check valve but it happens to me only when the car is warm or hot and not when the car is filled immediately upon starting after not being drven for many hours. since the obvious difference is heat, it seems heat from the exhaust pipe and therefore increased pressure is stopping the check valve from opening. then when the gasoline in the neck fills up, the gasoline pump shut offs but the weight (and less heat) of the gasoline overcomes the pressure and opens the check valve.
gas tank refill problem 2007 Mustang V6 
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