[mrlimeysteve]

my 98.5 4x4 1t dually was giving 17 to 20 hwy mpg until it started the dead pedal thing and now shows a p0216 trouble code. it still gets 14 or so. does your buddys truck show any dtc's?

 

[lilbrownCTD]

Is that 13 mpg Hwy or city or average? I have an 01 2500 with the 4.10s that I average mostly city in 14 maybe 15 depending on which route I take to work. so I presume that should be normal with that gear ratio.

 

[dmbowhunter]

could also check thermostat if it is cool it wont get hot enough for a efficient burn

 

[paragon]

mine got 15-16 calculated at fill-up with a mix of 50/50 highway-city. added xzt+ and exhaust and haven't been able to calculate yet; the fuel gauge is moving noticeably slower and it looks like i may get around 20 this tank judging by the odometer and fuel level. of course i drive it like a grandma so im sure that helps.

Makes me wonder what i'll get if i was stock height with stock tires

 

[Guest]

my 98.5 4x4 1t dually was giving 17 to 20 hwy mpg until it started the dead pedal thing and now shows a p0216 trouble code. it still gets 14 or so. does your buddys truck show any dtc's?

I don't think he has any DTC's, at least he hasn't mentioned them if he has any.

 

[blacksmoke669]

Mine gets over 15 if i drive it easy. Usualy gets around 14.5 hand calculated

 

[Guest]

Thanks for the input, I'll pass this info along. I know he doesn't drive too fast with it, and I believe the mpg he is reporting is pretty much a "no matter what" type of thing.

 

[bigblue24v]

try an exhaust and CAI

anywhere from 1-2 mpg boosts

 

[cm cows]

keeping the rpm's under 2000 helps a lot. i have 33's whats in my sig and a 3.54 rear and i got 15 on highway, but that was with a killer cross wind and the tranny slipping to about 2150-2200 runnig 70, so that didnt help either.

 

[msdg137]

on my 99 65mph=22mpg 70mph=15mpg. Theres a huge difference between the two. Try finding a sweet spot on the accelerator for best mpgs. My truck was getting a consistent 13mpg when the speed sensor was intermittent. It threw an abs and brake code. Once I fixed it it the truck shifted better getting better mpg. Could be the sensor or the drivers foot.