bad gas mileage and trouble taking off
05-20-2013, 07:41 AM
#1
Seasoned Member
Thread Starter
Join Date: Sep 2011
Location: segoville tx
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
bad gas mileage and trouble taking off
Well i brought this up before but its becoming a pain in my a!@. My gas mileage has drop dramatically.. and now everytime i take off it stutters and bogs down to where it almost dies then picks up and goes... im stumped and need help
05-20-2013, 08:30 AM
#3
Seasoned Member
Thread Starter
Join Date: Sep 2011
Location: segoville tx
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
05-20-2013, 08:34 AM
#4
Seasoned Member
Thread Starter
Join Date: Sep 2011
Location: segoville tx
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
Well when i take off in my jeep its bogs down and wants to die. I have to press the gas and it still wont go and stutters then clears up and runs fine.. and my gas mileage has been getting worse.
05-20-2013, 10:29 AM
#7
CF Veteran
Join Date: Aug 2010
Location: Canton, MI
Posts: 8,357
Likes: 0
Received 82 Likes
on
67 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
I recommend replacing both upstream and downstream Oxygen Sensors. This may cure both of your problems.
The original equipment was NTK sensors. They work very well.
NTK Upstream O2S part number 23151, downstrean 23099.
Rockauto has them (maybe the cheapest around).
http://www.rockauto.com/catalog/rafr...rttype=5260&ck[ID]=0&ck[idlist]=0&ck[viewcurrency]=USD&ck[PHP_SESSION_ID]=1ko2qvtkli0ac59gp3ovgjg1d4
The original equipment was NTK sensors. They work very well.
NTK Upstream O2S part number 23151, downstrean 23099.
Rockauto has them (maybe the cheapest around).
http://www.rockauto.com/catalog/rafr...rttype=5260&ck[ID]=0&ck[idlist]=0&ck[viewcurrency]=USD&ck[PHP_SESSION_ID]=1ko2qvtkli0ac59gp3ovgjg1d4
Trending Topics
05-20-2013, 10:42 AM
#8
Seasoned Member
Thread Starter
Join Date: Sep 2011
Location: segoville tx
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
I recommend replacing both upstream and downstream Oxygen Sensors. This may cure both of your problems.
The original equipment was NTK sensors. They work very well.
NTK Upstream O2S part number 23151, downstrean 23099.
Rockauto has them (maybe the cheapest around).
http://www.rockauto.com/catalog/rafr...rttype=5260&ck[ID]=0&ck[idlist]=0&ck[viewcurrency]=USD&ck=1ko2qvtkli0ac59gp3ovgjg1d4
The original equipment was NTK sensors. They work very well.
NTK Upstream O2S part number 23151, downstrean 23099.
Rockauto has them (maybe the cheapest around).
http://www.rockauto.com/catalog/rafr...rttype=5260&ck[ID]=0&ck[idlist]=0&ck[viewcurrency]=USD&ck=1ko2qvtkli0ac59gp3ovgjg1d4
05-20-2013, 12:26 PM
#10
Seasoned Member
Thread Starter
Join Date: Sep 2011
Location: segoville tx
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
05-20-2013, 12:36 PM
#11
Newbie
Join Date: May 2013
Location: Northwest
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Its a lean condition for sure, when you step on it theres not enough fuel, your bad gas mileage is the computer adding fuel trying to correct the problem. Id check fuel pressure. any check engine light on? could be some bad sensors. Could be low fuel pressure do to bad pump... etc. Id make sure your getting a strong spark too while your checking things.
Last edited by fiveoformula; 05-20-2013 at 12:39 PM.
05-20-2013, 12:52 PM
#12
Seasoned Member
Thread Starter
Join Date: Sep 2011
Location: segoville tx
Posts: 474
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0 6 cylinder
Its a lean condition for sure, when you step on it theres not enough fuel, your bad gas mileage is the computer adding fuel trying to correct the problem. Id check fuel pressure. any check engine light on? could be some bad sensors. Could be low fuel pressure do to bad pump... etc. Id make sure your getting a strong spark too while your checking things.
05-20-2013, 01:57 PM
#13
Newbie
Join Date: May 2013
Location: Northwest
Posts: 17
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0L
Being a 97, its OBDII so you can get the code scanned for free at a local auto parts store. I would scan it and post up the code you get. likely that will lead you right to the problem.
05-20-2013, 06:06 PM
#14
CF Veteran
Join Date: Aug 2010
Location: Canton, MI
Posts: 8,357
Likes: 0
Received 82 Likes
on
67 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Its a lean condition for sure, when you step on it theres not enough fuel, your bad gas mileage is the computer adding fuel trying to correct the problem. Id check fuel pressure. any check engine light on? could be some bad sensors. Could be low fuel pressure do to bad pump... etc. Id make sure your getting a strong spark too while your checking things.
05-20-2013, 06:13 PM
#15
CF Veteran
Join Date: Jul 2012
Location: San Antonio, TX
Posts: 4,104
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L
I had something very similar in my 95 shed chug and back fire and accellerate like crap. Replacing my 02 sensor solve it completly and gave me 2 mpg back