Larger Fuel tanks and tuners. Any problems? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 15 (permalink) Old 12-19-2010, 09:30 PM Thread Starter
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Larger Fuel tanks and tuners. Any problems?

I've read several times that placing a larger fuel tank or adding a tank to the bed will trip the stock computer and throw a code. Something to do with stock computer not recognizing high miles to stock fuel tank capacity.

Anybody with larger fuel tank or bed tank have problems with any tuners?
Any tuner vendor/programmer with info on this?

thanks in advance
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post #2 of 15 (permalink) Old 12-19-2010, 10:44 PM
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Never heard of that. I have a Transfer flow in the bed, no codes.

2008 FX4 3:73 ZF-6 SC SB Transfer Flow
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post #3 of 15 (permalink) Old 12-20-2010, 12:31 AM
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EARLY trucks did it - but they came up w/ an updated flash.

the issue - when the PCM didnt see movement from the fuel gauge after 200mi
the PCM assumed the fuel gauge or sending unit was broken.

transferflow had this problem more than anyone iirc - tanks IN the bed, pump
fuel to the MAIN tank (when the main tank reaches 1/2 full) so the issue is a NON
issue.

Don R.

'04 350 4WD Lariat Crew Longbed (built 05.04)
-------------------

-------------------

Gear Vendors Dbl Overdrive Install w/ Pics.
135 Amp Alternator Upgrade/Replacement
50 Gal. Aux Tank; Pump, Filter, Wiring
Truck Audio,
CUSTOM Valentine One Install - LINK
$10 Grill Mod. (protects the coolers) !

Block Heater Cord (Rear Mounted w/ Timer) - LINK

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post #4 of 15 (permalink) Old 12-20-2010, 04:00 AM Thread Starter
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Ah, excellent. So my Job3 2008 450 should be ok, right?
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post #5 of 15 (permalink) Old 12-20-2010, 08:30 AM
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you will be fine !

Don R.

'04 350 4WD Lariat Crew Longbed (built 05.04)
-------------------

-------------------

Gear Vendors Dbl Overdrive Install w/ Pics.
135 Amp Alternator Upgrade/Replacement
50 Gal. Aux Tank; Pump, Filter, Wiring
Truck Audio,
CUSTOM Valentine One Install - LINK
$10 Grill Mod. (protects the coolers) !

Block Heater Cord (Rear Mounted w/ Timer) - LINK

REALTIME -CURRENT DIESEL Pricing <HERE>
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post #6 of 15 (permalink) Old 12-20-2010, 08:26 PM Thread Starter
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Thank you!
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post #7 of 15 (permalink) Old 12-21-2010, 01:58 PM
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Quote:
Originally Posted by bushpilot View Post
EARLY trucks did it - but they came up w/ an updated flash.

the issue - when the PCM didnt see movement from the fuel gauge after 200mi
the PCM assumed the fuel gauge or sending unit was broken.

transferflow had this problem more than anyone iirc - tanks IN the bed, pump
fuel to the MAIN tank (when the main tank reaches 1/2 full) so the issue is a NON
issue.
I don't know what "early" means, but I have the same "problem" with my '06. It usually occurs on long trips where I leave my aux tank ball valve on, and as you say, the fuel tank gauge doesn't move. After about 200 miles, the PCM throws a hissy fit and I get the PL0460 code (bad tank gauge) fault and CEL.

My Scangauge II makes short work of it, so it's no big deal to me.
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post #8 of 15 (permalink) Old 12-21-2010, 02:28 PM
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Quote:
Originally Posted by Albin View Post
I don't know what "early" means, but I have the same "problem" with my '06. It usually occurs on long trips where I leave my aux tank ball valve on, and as you say, the fuel tank gauge doesn't move. After about 200 miles, the PCM throws a hissy fit and I get the PL0460 code (bad tank gauge) fault and CEL.

My Scangauge II makes short work of it, so it's no big deal to me.
early as in 6.0 - i didnt know if it still occurred in the 6.4 or 6.7
Ive hear that theres a new flash coming that will allow 6.7 trucks
to change the size of their tank - but i have no confirmation of that, or
if it will apply to any other model years.

install a pump and you wont get the CEL

Don R.

'04 350 4WD Lariat Crew Longbed (built 05.04)
-------------------

-------------------

Gear Vendors Dbl Overdrive Install w/ Pics.
135 Amp Alternator Upgrade/Replacement
50 Gal. Aux Tank; Pump, Filter, Wiring
Truck Audio,
CUSTOM Valentine One Install - LINK
$10 Grill Mod. (protects the coolers) !

Block Heater Cord (Rear Mounted w/ Timer) - LINK

REALTIME -CURRENT DIESEL Pricing <HERE>
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post #9 of 15 (permalink) Old 12-22-2010, 03:16 AM
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Quote:
Originally Posted by 08-450dually View Post
I've read several times that placing a larger fuel tank or adding a tank to the bed will trip the stock computer and throw a code. Something to do with stock computer not recognizing high miles to stock fuel tank capacity.

Anybody with larger fuel tank or bed tank have problems with any tuners?
Any tuner vendor/programmer with info on this?

thanks in advance
I plan on installing a Titan Super Series tank in my this coming spring. From what they tell me there is no error.

Most people that saw the error where those using the early Express UFS system with the transfer flow tank as the tank's level would slow or stop near the 1/2 mark when the pump kicked in and began transferring fluid to the OEM tank. This pause or reverse in level while the truck was motion kicked up the error that you had a faulty in tank sensor.

However from what I've been told by transfer flow this error has also been eliminated by changes in software not only in the transfer flow electronics but in the OEM ECM as well.

Now provided what I was told was false and you still receive the error. Having a DashDaq or any code reading tuner installed will allow you to read, decipher and clear the code in question.

I think both Titan and Transfer Flow offer great products. However if I was buying a direct replacement tank (which I am) it will be the Titan due to the rugged nature of the construction. If in the future I decide to augment my 67 gallons of fuel with an in Bed tank, it will be a Transfer flow.

Of course I may not have to do both as I plan on adding an F450/550 with a hauler body to the collection in the next few years. Which of course will have an added tank...

Of course as fuel prices steadily rise, I may not be driving anything



Jeremy Payne
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post #10 of 15 (permalink) Old 12-22-2010, 08:45 AM
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im curious how you feel the plastic titan tank is more rugged than the metal transferflow ?

Don R.

'04 350 4WD Lariat Crew Longbed (built 05.04)
-------------------

-------------------

Gear Vendors Dbl Overdrive Install w/ Pics.
135 Amp Alternator Upgrade/Replacement
50 Gal. Aux Tank; Pump, Filter, Wiring
Truck Audio,
CUSTOM Valentine One Install - LINK
$10 Grill Mod. (protects the coolers) !

Block Heater Cord (Rear Mounted w/ Timer) - LINK

REALTIME -CURRENT DIESEL Pricing <HERE>
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