new o 2 worse mpg
03-23-2012, 03:05 AM
#1
Seasoned Member
Thread Starter
Join Date: Oct 2011
Location: spokane valley, wa
Posts: 433
Likes: 0
Received 2 Likes
on
2 Posts
Year: 1993
Model: Cherokee
Engine: 4.0
new o 2 worse mpg
Title says it all. New Bosch o2 sensor to replace what was probably the original and my mpg has decreased slightly. 93 4.0 a/t no driving pattern changes. If anything it should have been better because I did a lot more highway driving this tank than usual. Not sure why this would be happening or what to start looking for.
03-23-2012, 05:01 AM
#2
Seasoned Member
Join Date: Aug 2011
Location: washington
Posts: 328
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1987
Model: Cherokee
Engine: 4.0 6cyl
I'd try resetting my ecu. Unplug the battery for a few minutes. If your old O2 was bad the ecu could have been compensating.
Thread
Thread Starter
Forum
Replies
Last Post
toasterknight
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
33
05-21-2016 07:03 AM
libengan
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
14
11-06-2015 09:16 AM
azdave35
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
12
09-30-2015 06:25 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)