6.2 thirsty at idle?

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#16

12-30-2014, 06:26 AM

don123

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Quote:

Originally Posted by Crumm

Flew to Anchorage the day before thanksgiving and picked up my new F350 Supercab long bed. On the 360mi drive home she averaged 13.4 running in 4x4 probably half the time on some nasty roads the whole way. Next tank was 8.1 running all town with the longest stretch of highway being 2mi. This tank had many idle warm ups at temps around zero. Last tank came in at 7.5mpg with same type of driving and warm ups in the -10° and colder range. At home I park inside the shop but at work it takes a good 15-20 minutes to get things thawed out. I also hit the remote start when out and about at restaurants and what not. With the shock of the 7.5mpg last night I took her for a 100 mile road trip and found it to come in at 13.8 which is totally acceptable. Anyone else find the 6.2 to be thirsty at idle? In comparison my 7.3 diesel only looses about 2-3mpg from highway to town/idle. This 6.2 is dropping over 6mpg.

I have a 2015 f350 cclb 6.2 with 3200 miles averaging 13 mpg combined. If I idle it for 15 mins it goes from 13 to 12.6. Not a big deal. Once I start driving it comes back to where it was. I'm not too concerned.

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#17

12-30-2014, 05:12 PM

jimd1050

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Quote:

Originally Posted by Crumm

That recent of a reset would make idleing drop the mpg faster than if it had been several hundred miles since a reset.

I just have to keep reminding myself that a computer is only as good as it's input (or inputs)!

Jim D

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#18

01-03-2015, 09:51 PM

Boaterguy

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Quote:

Originally Posted by Crumm

That recent of a reset would make idleing drop the mpg faster than if it had been several hundred miles since a reset.

You are correct. The MPG indicator runs on constant averaging computations. If you just reset it, drove it at say 14mpg, then let it idle, it is averaging in the 0mpg idle time, and it will drop like a rock. If you haven't reset it in say like a month, the drop at idle would by far less noticable, if at all.

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#19

01-04-2015, 08:29 AM

jbullfrog

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Mpg isn't going to be accurate for idle. Look at the miles to empty to see what it's consuming.

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#20

01-05-2015, 02:32 PM

Gints

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Try to roll down the hill for 6-7 min, with foot off accelerator and you will get Prius MPG!

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#21

01-05-2015, 09:20 PM

rvpuller

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Quote:

Originally Posted by Gints

Try to roll down the hill for 6-7 min, with foot off accelerator and you will get Prius MPG!

When we were out west I reset the instant mpg when the trailer was pushing me down hill and it registered 99.9 mpg but it didn't last to long pulling, there's always the next hill to climb.

Denny

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#22

01-06-2015, 07:02 AM

jonrjen

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It will also make a huge difference in how you have you computer set up to read. You can set it to read at different intervals. So if you have it set to read and recalculate every 5 minutes a little idle time will make a huge difference. Where if it is set to recalculate every 30 minutes a little idle time will not have the same huge effect on the updated numbers.

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