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XJ Ask the Question Thread
yeah I ment map sensor and both. It died on me 4 times Saturday and I just have to shut it off and turn it back on and its fine for a few minutes. if I hold speed like idleing it dies and if I leave it running without driving it takes about 15 minutes to die
CF Veteran
Joined: Aug 2015
Posts: 1,226
Likes: 11
From: Laurium, MI
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L
Edit: no codes except for the NSS bypass at this time.
Edit 2: Would a bad coil throw codes? It's so weird it only does it at low throttles, NEW TPS, NEW MAP, fuel pump must be good, has new fresh gas, new spark plugs, transmission shifts smoothly under acceleration, having the NSS bypassed shouldn't mess up anything like this right? It's only between 0-22ish% throttle.
Last edited by rcguymike; Jul 11, 2016 at 11:08 AM.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
CF Veteran
Joined: Aug 2015
Posts: 1,226
Likes: 11
From: Laurium, MI
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L
RC if this is a vehicle that you want to chronicle the history you may want to check out some of the build threads, and see how some the guys over there started out with issues, and worked out the kinks and got a good build running.
Don't hesitate to use the search function too, once you get the hang of using search some of the routine questions can help you find the real hard stuff. I have found that searching this thread the tires and suspension thread and the walk thoughts forum have all been helpful.
Don't hesitate to use the search function too, once you get the hang of using search some of the routine questions can help you find the real hard stuff. I have found that searching this thread the tires and suspension thread and the walk thoughts forum have all been helpful.
Last edited by jackace; Jul 11, 2016 at 03:53 PM.
CF Veteran
Joined: Aug 2015
Posts: 1,226
Likes: 11
From: Laurium, MI
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L
RC if this is a vehicle that you want to chronicle the history you may want to check out some of the build threads, and see how some the guys over there started out with issues, and worked out the kinks and got a good build running.
Don't hesitate to use the search function too, once you get the hang of using search some of the routine questions can help you find the real hard stuff. I have found that searching this thread the tires and suspension thread and the walk thoughts forum have all been helpful.
Don't hesitate to use the search function too, once you get the hang of using search some of the routine questions can help you find the real hard stuff. I have found that searching this thread the tires and suspension thread and the walk thoughts forum have all been helpful.
Last edited by rcguymike; Jul 11, 2016 at 04:15 PM.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
I appreciate the kind words, but I learned a lot of what I know the same way. I have well over 10k hours of research and reading about Jeeps, suspension design, etc. I enjoy it, and I like learning. Anybody can get to where I am with patience and interest
Herp Derp Jerp

Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
Senior Member
Joined: Nov 2013
Posts: 503
Likes: 0
From: Jax, FL
Year: 1998
Model: Cherokee
Engine: 4.0L
Any other opinions on the impact wrench vs. breaker when attacking exhaust manifold bolts? Also, can anyone recommend anything else I should replace while the exhaust and intake are off? Replacing the CPS while I'm in there.
Junior Member
Joined: Jun 2016
Posts: 88
Likes: 20
From: Colorado
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0 (Renix)
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Junior Member
Joined: Jun 2016
Posts: 88
Likes: 20
From: Colorado
Year: 1988
Model: Cherokee (XJ)
Engine: 4.0 (Renix)
Actually, it is a viscous clutch.
This is what vicious is:
Video Link: https://www.youtube.com/watch?v=4r7wHMg5Yjg




