a little stumbling in the morning
#1
Senior Member
Thread Starter
Join Date: Jan 2010
Location: Brentwood, TN
Posts: 999
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
a little stumbling in the morning
This morning I started the jeep up and it had a little stumble. It cranked up just fine but if I gave it a little gas while sitting idle it felt like it would stumble a little. It never stalled and after a few minutes it was fine. It did not do this again today but it did worry me a little. Any ideas? I have a new IAC, alternator this weekend, replaced plugs almost 6 months ago. I need an oil change but that shouldnt be the issue. I have noticed it did this before when I let it sit for a day over the weekend without driving it and only on cold weekends.
#2
CF Veteran
Join Date: Nov 2010
Location: In the middle of Minnesota!
Posts: 5,805
Received 99 Likes
on
88 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
1. What type of plugs did you install? The 4.0 does NOT like Bosch plugs. Champion copper or NGK will be fine for your 2001
2. The throttle position sensor might be starting to become flaky...........
3. Did you thoroughly clean your throttle body when you replaced your IAC? Very important as a dirty throttle body can lead to the stumbling symptom you mention.
2. The throttle position sensor might be starting to become flaky...........
3. Did you thoroughly clean your throttle body when you replaced your IAC? Very important as a dirty throttle body can lead to the stumbling symptom you mention.
#3
Senior Member
Thread Starter
Join Date: Jan 2010
Location: Brentwood, TN
Posts: 999
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
1. What type of plugs did you install? The 4.0 does NOT like Bosch plugs. Champion copper or NGK will be fine for your 2001
2. The throttle position sensor might be starting to become flaky...........
3. Did you thoroughly clean your throttle body when you replaced your IAC? Very important as a dirty throttle body can lead to the stumbling symptom you mention.
2. The throttle position sensor might be starting to become flaky...........
3. Did you thoroughly clean your throttle body when you replaced your IAC? Very important as a dirty throttle body can lead to the stumbling symptom you mention.
TPS was changed with IAC
I removed the throttle body when I replace the IAC and TPS and cleaned it by hand.
#4
Senior Member
Join Date: Aug 2009
Location: St. George Utah
Posts: 683
Likes: 0
Received 1 Like
on
1 Post
Year: 1989
Model: Cherokee
Engine: 4.0L Rebuilt Renix "Low Output" haha
My jeep does the same thing when it has sat for over a day and it's cold.... I just rebuilt the crazy thing and replaced everything including iac spark plugs wires cap rotor injectors and cps.... The only thing I haven't replaced is the map, and mat sensors, and the tps... So it could be one of those three.
#6
Senior Member
Join Date: Apr 2011
Location: Lansing, MI
Posts: 813
Likes: 0
Received 1 Like
on
1 Post
Year: 2000
Model: Cherokee
Engine: 4.0
Mine does this too once in a while in the mornings. I'd say more often than not... but probably reasonably close to 50/50.
It's not bad and goes away after maybe 20 seconds, so it hasn't really concerned me yet.. I just contribute it to the possible need of a tune-up and new injectors/clean injectors.
It's not bad and goes away after maybe 20 seconds, so it hasn't really concerned me yet.. I just contribute it to the possible need of a tune-up and new injectors/clean injectors.
Thread
Thread Starter
Forum
Replies
Last Post
SergeK
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
02-27-2023 03:38 PM
Mike Canada McDonald
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
09-30-2015 07:48 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)