Super high idle
03-26-2011, 03:47 PM
#1
Member
Thread Starter
Join Date: Jul 2010
Location: Atlanta
Posts: 152
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0
Super high idle
I just put in a tb that I bought that was bored, now my jeep is idling super high iv replaced all the sensors and vacuum lines and no luck. could it be the tb??? please help me guys.
thanks,
Alex
thanks,
Alex
03-26-2011, 03:53 PM
#2
CF Veteran
Join Date: Jan 2010
Location: Coeur d' Alene, Idaho
Posts: 1,316
Likes: 0
Received 1 Like
on
1 Post
Year: 1998
Model: Cherokee
Engine: 4.0 rebuilt w/ bored TB, banks header, upgraded ignition, 3 row rad, high flow h2o pump, 180* t-stat
how high is super high?
What is the TB bored to?
did you get the Throttle Position Sensor installed on the TB correctly?
What is the TB bored to?
did you get the Throttle Position Sensor installed on the TB correctly?
03-26-2011, 03:56 PM
#3
Junior Member
Join Date: Mar 2011
Location: franklin, ma
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.0
try disconnecting the batt for like 10 min...then reconnecting it. i havent installed a aftermarket tb on my jeep so i do not know for sure if this is common. but typically on my previous cars, after installing something new while the computer is adjusting the revs tend to "hang." so let it idle for a while and if it doesnt come down at all and your sure everything is all connected, im assuming the aftermarket tb has a idle air screw that can be adjusted?
03-26-2011, 04:01 PM
#4
CF Veteran
Join Date: Jan 2010
Location: Coeur d' Alene, Idaho
Posts: 1,316
Likes: 0
Received 1 Like
on
1 Post
Year: 1998
Model: Cherokee
Engine: 4.0 rebuilt w/ bored TB, banks header, upgraded ignition, 3 row rad, high flow h2o pump, 180* t-stat
try disconnecting the batt for like 10 min...then reconnecting it. i havent installed a aftermarket tb on my jeep so i do not know for sure if this is common. but typically on my previous cars, after installing something new while the computer is adjusting the revs tend to "hang." so let it idle for a while and if it doesnt come down at all and your sure everything is all connected, im assuming the aftermarket tb has a idle air screw that can be adjusted?
Touch battery terminals together for ten seconds to "clear" PCM
I didn't get a High Idle issue when i installed my bored TB, but could be caused by an increase in airflow....
03-26-2011, 04:16 PM
#5
Member
Join Date: Feb 2011
Location: Ocala, Florida
Posts: 189
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0
Idle is controlled by the iac ( idle air control) its in the throttle body and its different from the tps, could also be a vacuem leak
03-26-2011, 04:57 PM
#7
Seasoned Member
Join Date: Jan 2011
Location: New York
Posts: 294
Likes: 0
Received 1 Like
on
1 Post
Year: 1996
Model: Cherokee
Engine: 4.0L
yea, mine did that when the IAC needed to be replaced. It idled around 1200-1300 rpm's. Replaced the Idle Air Control Valve and now it purrrrrs.
Trending Topics
03-26-2011, 05:54 PM
#8
Junior Member
Join Date: Mar 2011
Location: franklin, ma
Posts: 67
Likes: 0
Received 0 Likes
on
0 Posts
Year: 99
Model: Cherokee
Engine: 4.0
Thread
Thread Starter
Forum
Replies
Last Post
southfloridajeeps
Modified XJ Cherokee Tech
32
03-04-2023 01:10 PM
Calikingcrawler
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
09-07-2021 07:14 AM
Programbo
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
21
09-26-2015 11:32 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)