Worse gas mileage than before..
#1
Junior Member
Thread Starter
Join Date: Jan 2018
Location: Western, Ohio
Posts: 40
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0 Liter Inline-6
Worse gas mileage than before..
Howdy everyone,
First off I have a 00'XJ Sport with 193,000 some odd miles, and I just wanted to let ya'll know that I've been getting worse mileage day by day, just to give an example, I used 3/8s of a tank doing a 50 mile round trip. I know for a fact that's worse than what I usually get. I've also noticed that whenever I have a constant foot on the pedal my RPMs rev up and down two or three times between 1750 and 2250 RPMS, really weird as if I was trying to rev my engine to look 'cool'. I'm thinking its most likely that my fuel injectors are clogged up but I don't know what the heck it is for sure.
__________________________________________________ ____________________________
I would just like to know what might be causing the issue, just worried because its my daily driver..
Thanks!
"The education of a man is never completed until he dies" -Robert E.Lee
2000 XJ Sport//193k//4WD//4-door//Dana-35//Wrangler Bumpers // Gadsden sticker
1997 Dodge 3500//Hemi 5.9L// Dually//Pieceofsh**//Sittin for 3 years and probably will forever
First off I have a 00'XJ Sport with 193,000 some odd miles, and I just wanted to let ya'll know that I've been getting worse mileage day by day, just to give an example, I used 3/8s of a tank doing a 50 mile round trip. I know for a fact that's worse than what I usually get. I've also noticed that whenever I have a constant foot on the pedal my RPMs rev up and down two or three times between 1750 and 2250 RPMS, really weird as if I was trying to rev my engine to look 'cool'. I'm thinking its most likely that my fuel injectors are clogged up but I don't know what the heck it is for sure.
__________________________________________________ ____________________________
I would just like to know what might be causing the issue, just worried because its my daily driver..
Thanks!
"The education of a man is never completed until he dies" -Robert E.Lee
2000 XJ Sport//193k//4WD//4-door//Dana-35//Wrangler Bumpers // Gadsden sticker
1997 Dodge 3500//Hemi 5.9L// Dually//Pieceofsh**//Sittin for 3 years and probably will forever
#2
CF Veteran
First question that must be asked is if the Check Engine light is on?
Next, it sounds like your torque converter is going in and out of lock-up when cruising, which would explain the jumping up and down between the RPM ranges you mentioned. This could be caused by several possibilities such as a failing solenoid in the transmission, or something more mundane like a brake switch that is occasionally sending a false positive to the computer (do you ever notice your rear brake light flickering?). It could also be caused by a throttle position sensor that is failing.
Next, it sounds like your torque converter is going in and out of lock-up when cruising, which would explain the jumping up and down between the RPM ranges you mentioned. This could be caused by several possibilities such as a failing solenoid in the transmission, or something more mundane like a brake switch that is occasionally sending a false positive to the computer (do you ever notice your rear brake light flickering?). It could also be caused by a throttle position sensor that is failing.
Thread
Thread Starter
Forum
Replies
Last Post
Gauge
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
19
09-03-2015 09:37 PM
sventinker
Modified XJ Cherokee Tech
59
07-25-2013 03:12 PM
monstercherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
39
12-02-2012 01:58 AM
XJCountry94
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
16
10-27-2011 07:47 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)