2008 Dodge Hemi Issues
#11
Took the truck back to the dealer today complaining about the shifting up/down and fuel mileage.
Service manager gave me the same "all systems are normal" routine. Nothing wrong with the truck. Supposedly two techs that work for the dealership have the same truck and also get 13-15 mpg.
I now have 1,480 miles on the truck. First 2 tanks of fuel hand calculated to 15.5 mpg and 16.1 mpg. Every tank since has been 14.0 to 14.9 mpg. Today's fill up was 14.7 mpg.
Only modification to the truck was a Frontier brush guard (NOT the replacement bumper kind!)
I commute in the truck everyday, 40 miles one way.
12 miles at 60 mph, no traffic, cruise control on.
24 miles at 65 mph, light traffic, cruise control on.
4 miles light to medium traffic, 45 mph to 60 mph, 4 red lights, moderate traffic.
I drive "light and easy", no jackrabbit starts and all shifts under 2,700 rpms.
Same traffic conditions and speeds both morning and afternoon. Some rolling hills, mostly flat land.
Window Sticker EPA rating of 13 city, 17 highway.
Is my mileage numbers consistent with everyone else's or too low?
Service manager gave me the same "all systems are normal" routine. Nothing wrong with the truck. Supposedly two techs that work for the dealership have the same truck and also get 13-15 mpg.
I now have 1,480 miles on the truck. First 2 tanks of fuel hand calculated to 15.5 mpg and 16.1 mpg. Every tank since has been 14.0 to 14.9 mpg. Today's fill up was 14.7 mpg.
Only modification to the truck was a Frontier brush guard (NOT the replacement bumper kind!)
I commute in the truck everyday, 40 miles one way.
12 miles at 60 mph, no traffic, cruise control on.
24 miles at 65 mph, light traffic, cruise control on.
4 miles light to medium traffic, 45 mph to 60 mph, 4 red lights, moderate traffic.
I drive "light and easy", no jackrabbit starts and all shifts under 2,700 rpms.
Same traffic conditions and speeds both morning and afternoon. Some rolling hills, mostly flat land.
Window Sticker EPA rating of 13 city, 17 highway.
Is my mileage numbers consistent with everyone else's or too low?
#12
You might also want to try driving in the Tow/Haul or "O/D off" mode when not on the freeway. May improve your mpg's plus the tranny is not doing all that "zany" shifting and searching for a gear business. Though with those 20's on there, I dunno mpg wise but it's worth investigating. It won't hurt the Ram.
#17
#18
That's the worst i've seen...you either have really bad driving habits or your truck needs a full tune-up.
#19
[QUOTE=SeVeReDiStOrTiOn;1406478]That's the worst i've seen...you either have really bad driving habits or your truck needs a full tune-up.[/QUOTE
If I drive any softer or easier, I would never go over idle speed in gear. Front tires are front 42 psi (44 psi tires) and 40 psi rear. Any higher in the rear produces tire squeals when turning right.
If I drive any softer or easier, I would never go over idle speed in gear. Front tires are front 42 psi (44 psi tires) and 40 psi rear. Any higher in the rear produces tire squeals when turning right.
#20
On the highway I pick a speed and keep it, usually with cruise. I'm overdue for plugs & wires (stockers @ 58k miles) so that may help some. I cleaned the TB and associated sensors when I installed the intake last year.