2001 with 4.7 gas millage

s_chev · #1 02-24-2005, 04:02 PM

Hello all. I have a 2001 Durango with the 4.7 and I have been tracking the gas mileage for about 8 months. It has been consistantly around 14-15 up until recently. The last 2 fill-ups have gone down to 12 and now just 11mpg. Is that because of this "winter gas" I keep hearing about or is there something else going on. It has about 45K miles on it. Am I just stuck with the crappy gas mileage......

FIREBALL · #2 06-28-2005, 05:11 PM

I got 11.5 in my first tank of gas. 02 mostly city driving

Last Of The R/Ts · #3 06-28-2005, 05:26 PM

Looks like you have joined the 5.9 Liter club. Welcome!!!!!

cooleod · #4 06-28-2005, 10:26 PM

Silly question, but when is the last time you tuned it up? If you haven't in awhile, it could be the problem.

Saint · #5 06-29-2005, 12:12 AM

I was ecstatic when I found out I was getting 13 mpg, but then again I'm wierd like that and don't mind paying the price for a V-8.

biggame · #6 06-29-2005, 05:04 PM

I get 15 on the highway and 13 in the city. I have an 03 SLT+ 4+4 with 40K. I need to change the plugs and transmission/transaxle fluids. The fluids are supposed to make a pretty good difference when fresh, even better with synthetic. You might want to get the injectors cleaned as well.

EZ Rider98 · #7 08-24-2005, 12:15 PM

[8D]As someone have mention you may need a tune-up. If that not the problem, check your air filter. Most people forget to keep a close check on their tires pressure. Low tire can also rob your fuel mileage.

EZ Rider98 · #8 08-24-2005, 12:48 PM

I purchased my 01 Durango used (look like new) June 6, 05, 82,528 miles on ODO(highway traveler), excellent condition. I now have 90k miles today. After my up-grades ...16 - 17 mpg city and 22 - 23 mpg on the highway. I have been very pleased with the performance and the smooth ride. My durango - 4 x 2 driveline, equip with 3.55 gear ratio and 2+ oversize tires(255 x 70 -16). 90% highway driven.

Kensai · #9 08-24-2005, 05:24 PM

Quote:

ORIGINAL: EZ Rider98

I purchased my 01 Durango used (look like new) June 6, 05, 82,528 miles on ODO(highway traveler), excellent condition. I now have 90k miles today. After my up-grades ...16 - 17 mpg city and 22 - 23 mpg on the highway. I have been very pleased with the performance and the smooth ride. My durango - 4 x 2 driveline, equip with 3.55 gear ratio and 2+ oversize tires(255 x 70 -16). 90% highway driven.

I can see you get that kind of mileage being a 2WD and tall gearing! I bet your RPM is hovering way below 2k at 70 mph.

This is my maintenance schedule for my 00 R/T.

Replaced plugs, wires, cap, etc every 15-20k
Cleaned injectors every 20k
Cleaned Throttle body every 30k
OEM replacement K&N filter - cleaned every 20k
Coolant replaced every 15-20k
Tranny fluid replaced every 15k
Synthetic oil change every 6k

My D is approaching 65k soon so Axle and transfer fluids will be changed out at 65k

Doing this scheduled maintenance,

My 00 R/T at best gets 11-12 in summer and 12-13 in winter city driving. (No A/C usage in winter may be reason why). 13-15 highway driving year round. These figures are based on a finely maintenanced Durango! My D is basically factory with factory specs.

5.9
Full time 4x4 - (This is proabably why my mileage sux)
3.92 gears - (drops gas mileage too.)
Factory 275/60/17 tires.

I always perform a visual check of everything every few months and change anything that needed attention right away. The engine compartment is spotless and oil free! Looks like a new engine was installed everyday!

EZ Rider98 · #10 08-25-2005, 03:59 AM

Yes, at 70 mph I running about 1850 to 1900 rpm.