mileage again....
03-19-2011, 04:45 PM
#1
Junior Member
Thread Starter
Join Date: Feb 2011
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
mileage again....
93, 4.0, 4x4, non lift, stock tires.
200,000
new plugs, wires, cap, bug, intake filter, cleaned cai, and throttle body.
last fill up i got 11.2 mpgs.
suggestions? no trouble starting, no over heating, no hesitations, no codes, and 75-80% of the time i drive like a grandpa.
i was possibly thinking 02 sensors, i have no documentation on the jeep so i went parts changing crazy. any other ideas to help out my mpgs? 11.2 is way to low.
200,000
new plugs, wires, cap, bug, intake filter, cleaned cai, and throttle body.
last fill up i got 11.2 mpgs.
suggestions? no trouble starting, no over heating, no hesitations, no codes, and 75-80% of the time i drive like a grandpa.
i was possibly thinking 02 sensors, i have no documentation on the jeep so i went parts changing crazy. any other ideas to help out my mpgs? 11.2 is way to low.
03-20-2011, 07:39 PM
#4
CF Veteran
Join Date: Feb 2011
Location: Bergen County, New Jersey U.S.A.
Posts: 3,074
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
pcv, o2 sensors.... and fuel filter... and change your diff fluids... and did you do your rotor under your cap?
03-20-2011, 07:51 PM
#6
Junior Member
Thread Starter
Join Date: Feb 2011
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Originally Posted by The Rooster
pcv, o2 sensors.... and fuel filter... and change your diff fluids... and did you do your rotor under your cap?
Trending Topics
03-20-2011, 07:53 PM
#8
CF Veteran
Join Date: Feb 2011
Location: Bergen County, New Jersey U.S.A.
Posts: 3,074
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
Does your Jeep have a hard starting issue at all... you might want to upgrade to neon injectiors... make sure at 200k that you do not have leaky injectors too..
03-20-2011, 08:03 PM
#9
Junior Member
Thread Starter
Join Date: Feb 2011
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
hahah funny you should mention that.
i literally just sent payment for a set of them.
they are not leaking and i never smell gas.
the filter is something i overlooked as well. thank you for mentioning.
also no hard starting at all, ever. starts like a dream.
i literally just sent payment for a set of them.
they are not leaking and i never smell gas.
the filter is something i overlooked as well. thank you for mentioning.
also no hard starting at all, ever. starts like a dream.
03-20-2011, 08:06 PM
#10
☠ CF Sheriff ☠
A faulty o2 sensor is by far the biggest cause of fuel mileage losses. It usually also will not throw a code when malfunctioning.
They are very simple and cheap (<$50) to replace. I'd do this first before anything and see if things improve.
They are very simple and cheap (<$50) to replace. I'd do this first before anything and see if things improve.
03-20-2011, 08:12 PM
#11
Junior Member
Thread Starter
Join Date: Feb 2011
Posts: 71
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
i was going to order it online but i couldnt find it cheaper than 60 plus shipping. so ill hit advanced auto parts.
you recommend changing the rear sensor as well?
03-20-2011, 08:15 PM
#12
CF Veteran
Join Date: Feb 2011
Location: Bergen County, New Jersey U.S.A.
Posts: 3,074
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
might as well do both... if one has not been changed the other one probably has not been either..
03-20-2011, 09:11 PM
#13
☠ CF Sheriff ☠
