Jump to 2500 RPM in Park gear?!
#1
Seasoned Member
Thread Starter
Join Date: Nov 2011
Location: Falls Church, VA
Posts: 448
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Jump to 2500 RPM in Park gear?!
Ok guys so I think I've been having some issues with my engine lately. Well today as I turned the Jeep on it was in park and as soon as the engine came on it jumped to 2500 RPMs and just stayed there. No foot on brake or gas. Then I shifted it into Drive and it shot back down to 1000 or so rpms. Then as I started to roll out only using Drive...the engine kept jerking and would stop and then go. Anyone can help? Thanks so much
#2
CF Veteran
Join Date: Nov 2011
Location: phoenix az
Posts: 1,290
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by wifin
Ok guys so I think I've been having some issues with my engine lately. Well today as I turned the Jeep on it was in park and as soon as the engine came on it jumped to 2500 RPMs and just stayed there. No foot on brake or gas. Then I shifted it into Drive and it shot back down to 1000 or so rpms. Then as I started to roll out only using Drive...the engine kept jerking and would stop and then go. Anyone can help? Thanks so much
That's has happened to me wen I've started my rig but it's always calmed right down and not stayed high
#4
CF Veteran
Join Date: Nov 2011
Location: phoenix az
Posts: 1,290
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1989
Model: Cherokee
Engine: 4.0l 6 cylinder
Originally Posted by 1996sportXJ
Your throttle position sensor sounds bad.
Could always give it a cleaning
#5
::CF Moderator::
Join Date: Aug 2011
Location: Prescott, Az
Posts: 43,875
Received 1,526 Likes
on
1,238 Posts
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
First thing to do is a thorough throttle body and IAC cleaning. I think TJ Walker has a write-up he'll post for you. If he's up yet.....
#6
Seasoned Member
Thread Starter
Join Date: Nov 2011
Location: Falls Church, VA
Posts: 448
Likes: 0
Received 0 Likes
on
0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Alright I'll try that. Usually my idle seems alittle on the low side but now it's been randomly flying up like that. I checked the cables and they seems kind of loose so maybe I have to tighten those and check the sensor and stuff. It seems when I also accelerate my rpms go way up quickly but the Jeep itself isn't going as fast as it should. I have the pedal half way down if not more just to get to get it going
Thread
Thread Starter
Forum
Replies
Last Post
96Co
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
12
01-10-2024 06:17 AM
Jamesmon4
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
1
08-16-2016 09:04 PM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
10-09-2015 10:29 PM
aroundincircles
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
10-06-2015 11:12 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)