Sep 21, 2015, 03:49 PM
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XJ Ask the Question Thread
Senior Member
Joined: Jan 2011
Posts: 917
Likes: 101
Don't know jack about filters but look into removing the restriction tube thingy in the top part of the stock airbox were the intake tube connects though I have heard that will give you a little whistle
Senior Member
Joined: Jan 2011
Posts: 730
Likes: 2
From: Joliet, Il
Year: 1996
Model: Cherokee
Engine: HO4.0 I6
Will do. Also, I'm bust cleaning the iac. How do you guys go about cleaning inside the compartment that houses the iac? It looked like I could just knock out the torq screws but there is a little peg in the middle that prevents that.
Do I just do the best I can? Or is there an easier way?
Do I just do the best I can? Or is there an easier way?
Senior Member
Joined: Jan 2011
Posts: 917
Likes: 101
Will do. Also, I'm bust cleaning the iac. How do you guys go about cleaning inside the compartment that houses the iac? It looked like I could just knock out the torq screws but there is a little peg in the middle that prevents that.
Do I just do the best I can? Or is there an easier way?
Do I just do the best I can? Or is there an easier way?
Junior Member
Joined: May 2011
Posts: 45
Likes: 0
From: Chapel Hill, NC
Year: 2001
Model: Cherokee
Engine: 4.0 L Inline 6
Okay, I got the jeep up to "normal" operating temperature -- somewhere around 195º - 208º (depending on when the thermostat opens... forgive the newbness, they allegedly open at 98 ºC in Australia... which converts to 208 ºF). The fan didn't turn on. When the AC was turned on, the fan still didn't turn on.
I unplugged the temp sending unit on the thermostat housing and the fan started.
After plugging the temp sending unit back in, the aux fan kept running regardless of whether the AC was on or off, even after it cooled the engine temp below 210º with the AC off.
Is this indicative of a bad temp sending unit, or could this be caused by something else?
I unplugged the temp sending unit on the thermostat housing and the fan started.
After plugging the temp sending unit back in, the aux fan kept running regardless of whether the AC was on or off, even after it cooled the engine temp below 210º with the AC off.
Is this indicative of a bad temp sending unit, or could this be caused by something else?
Senior Member
Joined: Jan 2011
Posts: 730
Likes: 2
From: Joliet, Il
Year: 1996
Model: Cherokee
Engine: HO4.0 I6
Senior Member
Joined: Jan 2011
Posts: 730
Likes: 2
From: Joliet, Il
Year: 1996
Model: Cherokee
Engine: HO4.0 I6
Okay Cleaned everything up reallll good and it runs WAY smoother. Not as good as I thought it would run.
The only problem is when the transmission is in Park or neutral I have a higher Idle RPM of about 1000-1100. Is this how it is supposed to run when cleaned? I have no Idea because the iac & throttle body were both pretty gunked up.
The only problem is when the transmission is in Park or neutral I have a higher Idle RPM of about 1000-1100. Is this how it is supposed to run when cleaned? I have no Idea because the iac & throttle body were both pretty gunked up.
Junior Member
Joined: May 2011
Posts: 45
Likes: 0
From: Chapel Hill, NC
Year: 2001
Model: Cherokee
Engine: 4.0 L Inline 6
☠ CF Sheriff ☠
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
Okay Cleaned everything up reallll good and it runs WAY smoother. Not as good as I thought it would run.
The only problem is when the transmission is in Park or neutral I have a higher Idle RPM of about 1000-1100. Is this how it is supposed to run when cleaned? I have no Idea because the iac & throttle body were both pretty gunked up.
The only problem is when the transmission is in Park or neutral I have a higher Idle RPM of about 1000-1100. Is this how it is supposed to run when cleaned? I have no Idea because the iac & throttle body were both pretty gunked up.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
the last thing i was able to think of was the thermostat itself but now idk. Good luck with it
Senior Member
Joined: Jan 2010
Posts: 602
Likes: 3
From: LARRYVILLE
Year: 1998
Model: Cherokee
Engine: 4.0
Originally Posted by xj guy
Okay Cleaned everything up reallll good and it runs WAY smoother. Not as good as I thought it would run.
The only problem is when the transmission is in Park or neutral I have a higher Idle RPM of about 1000-1100. Is this how it is supposed to run when cleaned? I have no Idea because the iac & throttle body were both pretty gunked up.
The only problem is when the transmission is in Park or neutral I have a higher Idle RPM of about 1000-1100. Is this how it is supposed to run when cleaned? I have no Idea because the iac & throttle body were both pretty gunked up.