Sep 21, 2015, 03:49 PM
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CF Veteran
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Not necessarily. There are a few codes for hard faults with them but if the numbers are just whacked then the PCM has no real way of telling. On OBD-I the rear O2 I don't believe is involved in setting fuel trim (unlike OBD-II). If your forward O2 sensor is original, go ahead and get an NTK replacement. They only last about 80k
Senior Member
Joined: Apr 2009
Posts: 791
Likes: 0
From: Houston Texas
Year: 1996
Model: Cherokee
Engine: I6
Trac bar to frame bracket. Mine was popping, I found the bottom two bolts were loose.
CF Veteran
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Also check your motor mounts. I was looking all over for a long time and all I had to do was look up at my motor mount and could easily tell it was shot.
Last edited by Cherokeekid4x4; Feb 20, 2013 at 09:34 AM.
Senior Member
Joined: Nov 2012
Posts: 521
Likes: 0
From: Oregon
Year: 1996
Model: Cherokee
Engine: 4.0
Whats the normal idle rpms? And normal oil pressure? I just did a gauge swap and actually see those so im curious. My idle is about 800 - 900rpms. My oil pressure sits about 45 - 50ish.
CF Veteran
Joined: Feb 2012
Posts: 2,652
Likes: 2
From: Kansas
Year: 1994
Model: Cherokee
Engine: 190-hp, 4.0-liter I-6
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
750 RPM at idle, oil pressure can vary but 30-40 PSI at HOT idle is normal for a healthy engine. Hot idle means the oil is up to temp, which can be quite a few minutes after the coolant reaches temp. Good rule of thumb for oil pressure with the stock gauge is 0 when off, slightly to the left of the middle tick when hot, slightly to the right of the middle tick when cold, goes up with RPM and load. If in doubt get a mechanical testing gauge
Senior Member
Joined: Nov 2012
Posts: 521
Likes: 0
From: Oregon
Year: 1996
Model: Cherokee
Engine: 4.0
750 RPM at idle, oil pressure can vary but 30-40 PSI at HOT idle is normal for a healthy engine. Hot idle means the oil is up to temp, which can be quite a few minutes after the coolant reaches temp. Good rule of thumb for oil pressure with the stock gauge is 0 when off, slightly to the left of the middle tick when hot, slightly to the right of the middle tick when cold, goes up with RPM and load. If in doubt get a mechanical testing gauge
CF Veteran
Joined: May 2011
Posts: 1,458
Likes: 2
From: Glendale,Az
Year: 1990
Model: Cherokee
Engine: 4.0l 6Cyl
Make sure your engine is completly hot and running for awhile for a accurate oil pressure reading. When its cold mine reads 60+ but then when its at hot idle im near 20-30. In the summer in 115* my oil pressurs more around 18-20 i believe.
Junior Member
Joined: Feb 2009
Posts: 81
Likes: 0
From: Las Vegas
Year: 1999
Model: Cherokee
Engine: I6
i took apart my throttle body on my 99 xj and removed the iac valve housing to clean it all out thoroughly. In the process i broke one of the bolts that hold the housing down to the throttle body itself. I attempted to use an easy out set i got from autozone and its just not working and its starting to look as if im drillin the walls of the throttle body....my question is how bad would it be to just bolt it down with the 3 other screws with a gasket and/or are there any alternative routes i can take to avoid possible leaks in that corner of the broken screw such as just taping around the crevice with electrical tape lol
TIA
TIA
Senior Member
Joined: Mar 2012
Posts: 517
Likes: 0
From: gresham
Year: 1993
Model: Cherokee
Engine: inline 6 4.0 ho
i took apart my throttle body on my 99 xj and removed the iac valve housing to clean it all out thoroughly. In the process i broke one of the bolts that hold the housing down to the throttle body itself. I attempted to use an easy out set i got from autozone and its just not working and its starting to look as if im drillin the walls of the throttle body....my question is how bad would it be to just bolt it down with the 3 other screws with a gasket and/or are there any alternative routes i can take to avoid possible leaks in that corner of the broken screw such as just taping around the crevice with electrical tape lol
TIA
TIA
CF Veteran
Joined: Sep 2009
Posts: 6,322
Likes: 6
From: Summerville, Ga
Year: 1995
Model: Cherokee
Engine: 2.5 4 cyl.