So I went off this weekend on a little 400 mile jaunt. On the way home the (dishonest) trip computer was reading a healthy 35 mpg at 75 mph. So just to get a good read on what the fuel economy really was, I topped off.

I expected the distance to empty to read in the 700 miles range. Instead it said 9. Now it appears to be a random number generator between 11 and 49.

Has this happened to anyone else?

BTW the measured fuel economy was only 25 mpg. Probably had something to do with the 35 mph headwind, rain, sleet, and snow on the way up. Oh well, I was hoping for my first 30 mpg tank.

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2005 CRD Limited Flame Red w/ Renegade rock rails & light bar, AirLift 1000. 225/75R16 MT/R's on cheap black steel wheels, dual MOPAR subwoofers, Ipod kit & seat covers, Samco hoses - totaled and gone. 2008 WK Laredo 3.0L diesel - AirLift 1000, wife won't let me mess with it much. 2013 JK Sahara on order.

Still waiting for my first 30 mpg tank, too. Best I've ever gotten is 29.5.

Ever since getting the GDE tune for my Jeep, my EVIC has periodically done this. After a day or so, it goes back to normal. I understand that GDE has now updated the tune to address this and make the EVIC more accurate. I guess since I don't pay attention to it for mpg efficiency, I've not thought much about it.

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In this war of lines, so many have been crossed. Where will it all stop?

2006 Deep Beryl Green CRD Sport *SOLD 1/22/12*
Provent, V6 Airbox, Fumoto, Samcos, GDE ECO & TCM Tune, Euro JK TC, Magnaflow Catback
245/70/16 Destination A/T's
Boiler's Radiator Skid Plate
Jeepin' By Al 2.5 inch Adjust-A-Strut Lift, JBA Gen 4.5 UCA's (6/5/10)

Whenever I get over 30mpg, the EVIC does this... When I got 35, it read something like 120 miles until empty! Best I can figure is that 700 is the magic number that the miles to empty calculator refuses to surpass, instead simply circling back to zero and starting over again. Drive it around for a little while and it'll work itself out.

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2006 Jeep Liberty CRD, Limited
GDE Eco Tune, GDE TCM Tune, Bauer 203* Tstat, Amsoil EaA 201 Filter, Clean MAP, Samco CAC Hoses, Magnaflow Muffler #12226.
New Mopar Fuel Filter, K&N Filterminder, Fumoto Oil Drain Valve
225/75R16 Hankook Dynapros

Yep, mine started doing it after GDE. I haven't sent it in for any updates or anything.

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05CRD: GDE Hot ECU & TCM tunes, Provent, Cat filter, Facet lift pump, TransGo kit, Florida TC, Samcos, stainless brake lines, HDS thermostat, Renegade light bar,
RL super sliders, Bilstein adjustables, Al's Gen 4.5 Arms, 235/85-16 Duratracs, DTT rear, Elocker front, EVIC+TPMS, Turbo timer, McNally pillar gauges, Weeks Stage II kit.

I have the latest flash, and it keeps the mileage in the mid 20s, and I can get as high as 29 to 30 on the open road. So it seems to be more reliable in that I am not getting imaginary high mileage.

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2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

Now it's stuck on 621 miles to empty.

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2005 CRD Limited Flame Red w/ Renegade rock rails & light bar, AirLift 1000. 225/75R16 MT/R's on cheap black steel wheels, dual MOPAR subwoofers, Ipod kit & seat covers, Samco hoses - totaled and gone. 2008 WK Laredo 3.0L diesel - AirLift 1000, wife won't let me mess with it much. 2013 JK Sahara on order.

Normal with GDE ECU

DOC

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2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP

Like I said, I think it cycles around. That's what makes the most sense to me... right now, my full tank reads 16 miles to empty. In 15-20 miles, it will read 600+.

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2006 Jeep Liberty CRD, Limited
GDE Eco Tune, GDE TCM Tune, Bauer 203* Tstat, Amsoil EaA 201 Filter, Clean MAP, Samco CAC Hoses, Magnaflow Muffler #12226.
New Mopar Fuel Filter, K&N Filterminder, Fumoto Oil Drain Valve
225/75R16 Hankook Dynapros