96 Country, 16 MPGs with banks headers, performance intake, 3 inch lift, custom steel bumpers, 285 BF Goodrich all terranes on her.

 

right now getting 14.6 MPG all city driving. I know for a fact I was pulling over 19 mpg about a year or 2 ago with a mix of city/highway driving. Not sure what the issue is. Due for new tires and maybe more evidently as I swear my gas mileage shouldn't be this bad. I think it been 60k since tune up might try that.

 

I have a 97 grand cherokee and get 21 frwy miles

 

98 sport, 2.5" lift. 30" tires. All stock besides that. Averaging 15 city/highway driving. Lots of highway is stuck in traffic though

 

95 sport, 4.0L, 248,000 miles, 235/75R15 M/T tires, chopped front facia and fenders, stock lift, high flow exhaust, cowl intake, *703 injectors

Average 18.75mpg mixed city/highway (mostly back roads + stop lights)

I get a little over 330 miles per fill up (about 17 gallons)

 

I have a 95 grand cherokee limited bone stock and will axerage 15 MPG.

 

99 xj sport stock with 215/75r15 and 206k miles. I get about 11 mpg in the city and I have recorded a 29 mpg run from wildwood nj to philly straight through.

 

Gotta 90 laredo with 30s and stock height. From my place to my mas house is bout 30mi. I have to fill up just to make it back home. So i reckon 30mi to the tank on bad days.

 

95, AX15, 220K, 3.55's. at 3.5" lift on 30's I was getting 18-20mpg. Now at 4.5" on 33 KM1s and get 13-17mpg. damn mountians

 

There's something seriously wrong with your jeep if you're burning through that much gas.

O2 sensor inoperative, fuel line leak, injector(s) stuck open, something major

 

2000 auto all stock cherokee 19-21 mpg 90% highway miles to and from work.

2001 auto cherokee 30'' tires and a code for very small evap leak about 12 mpg

 

My 98 Zj w/3.55 gears and 33" tires gets +/-13 MPG open road
My 89 XJ w/3.55 gears and 31's gets +/-15 MPG as a grocery getter.

 

[QUOTE=apw5746;1124553]Stock 99 XJ, 152K
12-12 city
20 highway
what is seafoam, & does it clean the injectors, or is it best to remove.
Extremely non-mechanically inclined.
Lastly, how do you clean drain to prevent rain water dripping on passenger side?[/QUOTE

I have an update about gas mileage. Since I added seafoam, my mileage is now mid 17-18 in town (depending on how I drive), and almost 20 on the highway.

I do have a problem in that when I run A/C or plain air, my vent closed to defroster. Is there a fix, or am I doomed?

Pat]

 

Ya vacuum can. It's in the front bumper. Check all the vacuum lines from the can back. My can leaked but had no physical damage.

 

Bone stock = 14-15.5MPG
All stock except P235/75 R15 tires = 13-13.5 MPG
1.5" lift P235/75 R15 tires and driving like grandpa = 15-16 MPG
1.5" lift 32X11.5X15 tires and stock speedometer gear (wrong mileage) = 12MPG
1.5" lift 32X11.5X15 tires and correct 31 tooth speedometer gear = pending....

I do 60/40 city and highway.