88 xj hesitation
#1
Junior Member
Thread Starter
Join Date: Dec 2009
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
88 xj hesitation
My 88 xj is getting 10 mpg and when i first start it and take off it hesitates like its loading up on fuel but evens out in a couple seconds. Its running really rich i can smell it
#2
Senior Member
Join Date: Mar 2009
Location: Tucson, AZ
Posts: 979
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1991
Model: Cherokee
Engine: 4.0
Check your tps. I had the same problem.Its located on the throttle body base.Yor supposed to adjust it by moving left or right until you get the right voltage. I just adjusted it till my idle and throttle got better.
#3
Junior Member
Thread Starter
Join Date: Dec 2009
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Ya I just replaced it and adjusted it the same way.today I unplugged the 02 sensor and drove it and didn't make a difference its still under warranty so taking it back tomorrow
#4
Newbie
Join Date: Mar 2010
Location: flordia
Posts: 26
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1988
Model: Cherokee
Engine: 4.0
#5
CF Veteran
Join Date: Jun 2009
Posts: 5,383
Likes: 0
Received 4 Likes
on
1 Post
Year: 1988 limited
Model: Cherokee
Engine: 4.0 litre
Check the vacuum feed to the map sensor.
#7
I just replaced the idle air control and readjusted the TPS. No more problems with starting from a stop and it idles great now. I picked up some good stuff about adjusting the TPS here.
http://www.lunghd.com/Tech_Articles/...iagnostics.htm
http://www.lunghd.com/Tech_Articles/...iagnostics.htm
Last edited by redrunner; 03-09-2010 at 12:42 PM.
Trending Topics
#10
Junior Member
Thread Starter
Join Date: Dec 2009
Posts: 37
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
The jeep is not under warranty the 02 sensor is i wish it was under warranty. I checked the ohms of the 02 and they were right at 7 which is where it should be. Today i had a little bit of backfiring out the exhaust, i dont understand why i went from 20 mpg to 10 and the map sensor and vaccume lines are new
Thread
Thread Starter
Forum
Replies
Last Post
jeefersjeepers
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
09-20-2023 12:51 PM
JayneCobb
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
26
08-11-2020 03:22 PM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
10-09-2015 10:29 PM
hogans 96xj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
09-13-2015 09:11 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)