Sep 16, 2015, 06:27 PM
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Whats your MPG, Year and Make? Be truthful! We need better MPG's!
CF Veteran
Joined: Jun 2011
Posts: 1,023
Likes: 1
From: Southern Idaho
Year: 1994
Model: Cherokee
Engine: 4.0 L/242 CID I-6 High Output MFI
Yesterday I filled up, drove almost 100 miles, and filled back up. 3.990 gallons of gas used.
23.85 mpg by odometer reading (95.2 miles)
24.25 mpg by GPS reading (96.7 miles)
Stock tire size P225/75R15
I put a full can of Royal Purple fuel system cleaner in the tank. Filled up with 85 octane at Chevron. Did some fairly hard acceleration runs, with 75% of this on the interstate, and twenty minutes of idling. Gained about 1500 feet in elevation. So I had 25 mpg in the bag!
23.85 mpg by odometer reading (95.2 miles)
24.25 mpg by GPS reading (96.7 miles)
Stock tire size P225/75R15
I put a full can of Royal Purple fuel system cleaner in the tank. Filled up with 85 octane at Chevron. Did some fairly hard acceleration runs, with 75% of this on the interstate, and twenty minutes of idling. Gained about 1500 feet in elevation. So I had 25 mpg in the bag!
Last edited by 94JeepCherokeeMan; Jun 16, 2013 at 08:27 AM.
Newbie
Joined: Jun 2013
Posts: 6
Likes: 0
From: MB, Canada
Year: 1998
Model: Cherokee
Engine: 4.0 L I6
Regarding that throttle body spacer install, the whistle as mentioned was only there if I wicked the throttle a bit from idle. Can't hear it while driving. Absolutely no change after 4 days of driving and two tanks of gas. Took it off. Had to try it. Doesn't work.
CF Veteran
Joined: Feb 2012
Posts: 2,282
Likes: 18
From: central IN
Year: 1997
Engine: 4.0
Senior Member
Joined: Jul 2010
Posts: 997
Likes: 1
From: Long Island NY
Year: 2000
Model: Cherokee
Yesterday I filled up, drove almost 100 miles, and filled back up. 3.990 gallons of gas used.
23.85 mpg by odometer reading (95.2 miles)
24.25 mpg by GPS reading (96.7 miles)
Stock tire size P225/75R15
I put a full can of Royal Purple fuel system cleaner in the tank. Filled up with 85 octane at Chevron. Did some fairly hard acceleration runs, with 75% of this on the interstate, and twenty minutes of idling. Gained about 1500 feet in elevation. So I had 25 mpg in the bag!
23.85 mpg by odometer reading (95.2 miles)
24.25 mpg by GPS reading (96.7 miles)
Stock tire size P225/75R15
I put a full can of Royal Purple fuel system cleaner in the tank. Filled up with 85 octane at Chevron. Did some fairly hard acceleration runs, with 75% of this on the interstate, and twenty minutes of idling. Gained about 1500 feet in elevation. So I had 25 mpg in the bag!
Newbie
Joined: Mar 2013
Posts: 7
Likes: 0
From: Leadville,Colorado
Year: 97
Model: Cherokee
Engine: 4.0l il6
93 Stock 4wd 2door 4.0 and AX 15. 20mpg... the secret? Drive it like your grandparents. It is not fun but it works.
My driving is more or less "city" driving with a stop sign/light every mile. However, it is only partially stop and go sitting in traffic... say 3-5%...
My driving is more or less "city" driving with a stop sign/light every mile. However, it is only partially stop and go sitting in traffic... say 3-5%...
CF Veteran
Joined: Feb 2012
Posts: 2,282
Likes: 18
From: central IN
Year: 1997
Engine: 4.0
I don't necessarily drive like grandma. I still managed over 20 mpg after factoring in roughly 11 0-90 pulls. I don't think these things are as bad as everyone makes them out to be. it appears that the engine management system is very sensitive, so if your **** isn't up to snuff your mileage suffers. this suffering is exponential with big tires.
CF Veteran
Joined: Jun 2011
Posts: 1,023
Likes: 1
From: Southern Idaho
Year: 1994
Model: Cherokee
Engine: 4.0 L/242 CID I-6 High Output MFI
With those numbers, I have a 2" lift on. I just put Goodyear Wrangler Silent Armor 31x10.50R15s on last night. I'll re-evaluate fuel mileage before too long. I might order the correct speedo/odometer gear, too, but the GPS is fairly accurate.
Senior Member
Joined: Jul 2010
Posts: 997
Likes: 1
From: Long Island NY
Year: 2000
Model: Cherokee
The point of pumping air through the engine is to engine brake. That was covered a while back in this thread.
With those numbers, I have a 2" lift on. I just put Goodyear Wrangler Silent Armor 31x10.50R15s on last night. I'll re-evaluate fuel mileage before too long. I might order the correct speedo/odometer gear, too, but the GPS is fairly accurate.
With those numbers, I have a 2" lift on. I just put Goodyear Wrangler Silent Armor 31x10.50R15s on last night. I'll re-evaluate fuel mileage before too long. I might order the correct speedo/odometer gear, too, but the GPS is fairly accurate.
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
CF Veteran
Joined: Jun 2011
Posts: 1,023
Likes: 1
From: Southern Idaho
Year: 1994
Model: Cherokee
Engine: 4.0 L/242 CID I-6 High Output MFI
Engine braking does NOT hurt MPG because fuel shuts off to the cylinders when the engine is above 1500 RPM and the throttle is closed. That was the point of the original argument. It's better and more fuel efficient to keep it in fourth or fifth gear when going down a hill and letting the engine brake the vehicle to its own maintained speed rather than pushing in the clutch and using the brakes.
Junior Member
Joined: Sep 2011
Posts: 83
Likes: 0
From: Seminole Co., FL
Year: 94'
Model: Cherokee
Engine: 4.0
94' 4x4 4door, Specture OEM replacement air filter, Magnaflow muffler on 2.5" pipe(NO CAT), GY Wranglers and a worn out suspension.
18 mpg/hw cruising @ 75mph
18 mpg/hw cruising @ 75mph
