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Instant Enonomy on DIC?

Old Aug 14, 2007 | 07:18 AM
  #11  
iwannaHHR's Avatar
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Joined: 05-03-2007
Posts: 71
From: Texas
Originally Posted by LUHHRCH
Ive been noticing a drop from 28.4 to 27 average MPG on the dic. (which based on some of the posts doesnt seem too bad for a 2.2 auto). Then over the weekend I guess I left the Sirius on, and maybe a dvd screen as well... leading to dead battery on Sunday.

After a few attempted jumps with a jump box (also with a dead battery) I waited another day for a recharge of the Jump box and got luhhrch back running this morning.

Then I noticed something strange... The avg MPG was showing 28, then 28.5 when I backed out, then back to 28, down to 27.4 while pulling away. This rapid change (every minute or so) continued on the drive to work. During lunch I hit the A/C and there was an immediate .5mpg drop on the display.

I am starting to think I got into instant econ somehow (instead of average). perhaps even into a diagnostic mode. I will have to see if I have any other different readings available later.

Has anyone else had this happen?
The dead battery reset your DIC. I had instant fuelmileage in my GTO and its got a much larger range then that. when I'd let off of the gas going down hill it would jump to 99.9 mpg but going up the next hill it would go down to 10 or so.
Old Aug 14, 2007 | 07:18 AM
  #12  
dvoffroad's Avatar
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Joined: 08-14-2007
Posts: 45
From: Michigan
If you have a manual trans, its easy to make it hit 99.9

I'm averaging 29.1 in my first 400 miles on the odometer
Old Aug 14, 2007 | 07:36 AM
  #13  
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jx3
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Joined: 10-19-2005
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From: Miami
Originally Posted by dvoffroad
I'm averaging 29.1 in my first 400 miles on the odometer
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Originally Posted by iwannaHHR
The dead battery reset your DIC.
Don't think that is the case. Last month, I had to replace my battery after several mornings of jump starts. No information was lost except for the time on the radio. All presets remained, and no loss of info on the DIC.
Old Aug 14, 2007 | 10:24 AM
  #14  
terry44030's Avatar
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Joined: 05-22-2007
Posts: 164
From: Ohio
Holy Cow!! These batteries may fail after only a year or two? Great, I need more things to keep my paranoia high
Old Aug 14, 2007 | 10:58 AM
  #15  
jx3's Avatar
jx3
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Joined: 10-19-2005
Posts: 20,687
From: Miami
Originally Posted by terry44030
Holy Cow!! These batteries may fail after only a year or two? Great, I need more things to keep my paranoia high
Maybe not all of them, just might be a bad batch as it has only happened to only a few here. But the good news is, The battery is covered under warranty (if you still have any left).
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