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-   -   Crazy gas mileage (http://www.ramforumz.com/showthread.php?t=57408)

TexasXB 07-16-2010 03:18 PM

Crazy gas mileage
 
My 05 5.7 has recently started having some odd gas mileage issues. I can set the cruise, and watch my mileage fluctuate 5-7 mpg, in a as little as one minute. I have always checked my on-the-fly mileage, and kept a general idea of miles/tank, so I know this is out of the norm. All I've done to the truck is cold air (4 months ago), exhaust and EGR valve ( 1 week prior to issue). Any ideas?

crram1500 07-16-2010 05:08 PM

that sucks man. i wish i could help but good luck. if it makes you feel better i was getting about 20 mpg the other day:LOL:

erm 07-16-2010 06:14 PM

Are you watching it with your truck 'puter display? If so, just understand they can fluctuate and be notoriously inaccurate.

I just do it the old fashioned way... mileage divided by fuel consumed.

TexasXB 07-17-2010 08:12 AM

Yeah, I know they can be off a bit, but I'm definitely losing somewhere. I just hope I can figure it out before it breaks me.

erm 07-17-2010 10:28 AM

Are you sure you are losing somewhere or are you still going by the truck 'puter?

mattg1500 07-18-2010 03:03 PM

When the egr in my 05 went bad i also noticed the tbody was filthy and the pcv was also. its a non serviceable pcv nut you can remove it and clean it. use needle nose to twist it out and you will be surprised at the gum in it

erm 07-18-2010 03:04 PM

Good point ^^^^ and something to check out as well.

TexasXB 07-18-2010 07:03 PM

MADDOG, I'm definitely burning more fuel.
I'll check my pcv. Maybe that will help.

Tominator223 04-14-2011 01:53 PM

the pcv should be changed about every 4 or 5 oil changes its 25bucks or so. also make sure you are not over oiling that cold air filter. that will produce what you call gum on t body

jgshannon 04-14-2011 05:03 PM

Quote:

Originally Posted by Tominator223 (Post 500399)
the pcv should be changed about every 4 or 5 oil changes its 25bucks or so. also make sure you are not over oiling that cold air filter. that will produce what you call gum on t body

Man, I'm learning something new everyday lol.


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