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Old 01-10-2012, 10:28 PM   #11
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Re: Transfer Flow 47gal Tank using only 37 gal?

I would love to hear a solution as well. If this issue is not the float, I am open to venting issues too.

-j
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Old 01-11-2012, 07:17 AM   #12
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Re: Transfer Flow 47gal Tank using only 37 gal?

Hi,

I think the Low fuel/limp mode issue is diesel only. I have been able to use below E on my gas van.
My extra space is above F And below E. I did get a check engine light leaving Chico with the replacement tank, due to the needle not moving for too long - I was on a long uphill climb out of redding. Hasn't happened since.

I programmed and calibrated my Scangauge, it gives me a good reading on the trip menu.

One other point, you will never get 46 gal in the tank, TF said that the nozzle will shut off, leaving about 10% space to allow for heat expansion. So the actual usable capacity will be 41-42 gal, minus where the pick up stops picking up, and of course if you have a diesel there is the limp mode issue.
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Old 01-11-2012, 08:17 AM   #13
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Re: Transfer Flow 47gal Tank using only 37 gal?

I was told as well the 10 gallons is below E.

When I drove below E, the van went into limp mode. My guess is this is triggered by the pressure sensor on the fuel rail, because an intermittent failing sensor will cause limp mode. I'm sure carringb would know!

Anyway, after that scary experience of putting around trying to find diesel (and discovering that my fill is smaller than some diesel pump nozzles, a bad time to find that out) I filled it to the brim and discovered approximately 8 gallons above where pumps generally cut off, which from previous fills was about 38 gallons.

To really fill your tank, trickle diesel in until you can see it in the neck. This takes a ton of patience and I only do it when there is really cheap diesel or I'm headed off the beaten track. Some pumps work better than others (some it's impossible to get the trickle low enough to not click off constantly). It also varies a bunch from pump to pump, sometimes I fill to the neck and only squeeze 4 extra gallons in.

If you run it to E and then do this, or know about where your top is you can find out how much extra is at the top, if any. I think it's safer than running it into limp mode unless you carry diesel anyway.

My understanding is this could be alleviated by a vent tube modification, however I haven't tried the modification yet.

My 2 - I can't believe this is still an issue on a 2010
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Old 01-11-2012, 09:50 AM   #14
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Re: Transfer Flow 47gal Tank using only 37 gal?

I seem to recall a long thread on this
a fix w/ pic etc

wouldnt have been on the other sites, pretty sure here

anyone remember??
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Old 01-11-2012, 10:59 AM   #15
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Re: Transfer Flow 47gal Tank using only 37 gal?

Quote:
Originally Posted by billwilson
I seem to recall a long thread on this
a fix w/ pic etc

wouldnt have been on the other sites, pretty sure here

anyone remember??
See my post above.

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Old 01-11-2012, 11:21 AM   #16
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Re: Transfer Flow 47gal Tank using only 37 gal?

Is the fuel pump located at or in the fuel tank or near/top of the 6.0 diesel motor? I thought it was a mechanical pump located in the valley of death that creates the suction for fuel regulated by motor demand. Anyone have clarity on this?
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Old 01-11-2012, 02:14 PM   #17
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Re: Transfer Flow 47gal Tank using only 37 gal?

Quote:
Originally Posted by Ketcham
I did not check to see if there was 10 gallon left. I ran it on empty for 100 miles. If 10 gallons were left at 15 miles per gallon...I had some reserve for margin of error. On empty I consumed another 7 gallons. 2 were left if I filled with no issues filling to 45 gallons. That would lead me to believe this is not a venting issue, since I started at 47 gallons. The computer reads zero and goes into limp mode immediately...2010 year van.

thoughts?
How long did it take to go 100 miles in limp mode?

Mike
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Old 01-11-2012, 02:16 PM   #18
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Re: Transfer Flow 47gal Tank using only 37 gal?

Quote:
Originally Posted by Ketcham
Is the fuel pump located at or in the fuel tank or near/top of the 6.0 diesel motor? I thought it was a mechanical pump located in the valley of death that creates the suction for fuel regulated by motor demand. Anyone have clarity on this?
Fuel pump in on the frame rail under the driver - in the same unit as the lower filter.

Mike
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Old 01-11-2012, 03:33 PM   #19
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Re: Transfer Flow 47gal Tank using only 37 gal?

Is the fuel pump electric or mechanical?

As for the 100 miles in limp mode, the van will still go 65 mph but will reduce power every 15-30 seconds for a few seconds. This 'limp mode' engages when the computer reads empty, which makes be believe it is software, and not fuel starved as other have described.

I appreciate the input, since I am considering the Airdog 2, Zeta mentioned.
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Old 01-11-2012, 05:54 PM   #20
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Re: Transfer Flow 47gal Tank using only 37 gal?

Quote:
Originally Posted by Ketcham
Is the fuel pump electric or mechanical?

I appreciate the input, since I am considering the Airdog 2, Zeta mentioned.
Electric.

Mike
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