Easiest way to replace CPS??
CF Veteran
Joined: Nov 2011
Posts: 2,381
Likes: 6
From: SoCal
Year: 1989
Model: Cherokee
Engine: 4.0
There are a lot of tips and tricks that suggest access holes (no access holes on an '89 unless you start cutting into your floorboard which just seems silly, to me). The task can be accomplished with no cutting or RTV and it can be done alone in less than 15 minutes... probably not the first time, because you're learning, things are often more difficult the first time? Don't make it more complicated than it is.
Slide in feet first under the driver's side door which puts your arms in a much better position to reach the CPS, use a long extension or a collection of shorter ones with a wobble on the end. Taping the wobble is a good idea to limit movement. I also like to stick a little magnet on or in the socket to prevent the bolts from falling into the bell housing when they come loose.
As far as the "spacer", never seen or heard of that. Mine didn't have one and it would have been pointless, anyway. The bolts have a shoulder on them that is the exact diameter of the holes on the CPS providing a far more precise fitment than any piece of cardboard will. Don't forget to strap the harness lead to the firewall after you've connected it. If you don't, it will melt to your header... Really. It will. I'm not kidding. Big stinky mess. I was told to do this but thought, "Meh, how important could that step be? Looks fine". Sixty seconds later I was like, "Heeeeey! That doesn't smell right."
Slide in feet first under the driver's side door which puts your arms in a much better position to reach the CPS, use a long extension or a collection of shorter ones with a wobble on the end. Taping the wobble is a good idea to limit movement. I also like to stick a little magnet on or in the socket to prevent the bolts from falling into the bell housing when they come loose.
As far as the "spacer", never seen or heard of that. Mine didn't have one and it would have been pointless, anyway. The bolts have a shoulder on them that is the exact diameter of the holes on the CPS providing a far more precise fitment than any piece of cardboard will. Don't forget to strap the harness lead to the firewall after you've connected it. If you don't, it will melt to your header... Really. It will. I'm not kidding. Big stinky mess. I was told to do this but thought, "Meh, how important could that step be? Looks fine". Sixty seconds later I was like, "Heeeeey! That doesn't smell right."
Last edited by F1Addict; Jan 13, 2013 at 12:49 PM.
Senior Member
Joined: Jan 2012
Posts: 1,001
Likes: 0
From: Memphis tenn
Year: 88
Model: Cherokee
Engine: i6 4.0
There are a lot of tips and tricks that suggest access holes (no access holes on an '89 unless you start cutting into your floorboard which just seems silly, to me). The task can be accomplished with no cutting or RTV and it can be done alone in less than 15 minutes... probably not the first time, because you're learning, things are often more difficult the first time? Don't make it more complicated than it is.
Slide in feet first under the driver's side door which puts your arms in a much better position to reach the CPS, use a long extension or a collection of shorter ones with a wobble on the end. Taping the wobble is a good idea to limit movement. I also like to stick a little magnet on or in the socket to prevent the bolts from falling into the bell housing when they come loose.
As far as the "spacer", never seen or heard of that. Mine didn't have one and it would have been pointless, anyway. The bolts have a shoulder on them that is the exact diameter of the holes on the CPS providing a far more precise fitment than any piece of cardboard will. Don't forget to strap the harness lead to the firewall after you've connected it. If you don't, it will melt to your header... Really. It will. I'm not kidding. Big stinky mess. I was told to do this but though, "Meh, how important could that step be? Looks fine". Sixty seconds later I was like, "Heeeeey! That doesn't smell right."
Slide in feet first under the driver's side door which puts your arms in a much better position to reach the CPS, use a long extension or a collection of shorter ones with a wobble on the end. Taping the wobble is a good idea to limit movement. I also like to stick a little magnet on or in the socket to prevent the bolts from falling into the bell housing when they come loose.
As far as the "spacer", never seen or heard of that. Mine didn't have one and it would have been pointless, anyway. The bolts have a shoulder on them that is the exact diameter of the holes on the CPS providing a far more precise fitment than any piece of cardboard will. Don't forget to strap the harness lead to the firewall after you've connected it. If you don't, it will melt to your header... Really. It will. I'm not kidding. Big stinky mess. I was told to do this but though, "Meh, how important could that step be? Looks fine". Sixty seconds later I was like, "Heeeeey! That doesn't smell right."
Newbie
Joined: Jan 2018
Posts: 1
Likes: 0
Year: 2000
Model: Cherokee(XJ)
Engine: 4.0
It can be a bear of a project- or it can be very simple. Cut an access window. Do your business. Cover hole with flashing, three screws, and RTV. Replace carpet. Next time it goes bad- it only takes a few minutes to access it.
-Pictures shown on 5.2 ZJ. Same concept on XJs.
--Copp
-Pictures shown on 5.2 ZJ. Same concept on XJs.
--Copp
CF Veteran
Joined: Oct 2015
Posts: 7,519
Likes: 1,629
Year: 2000
Model: Cherokee (XJ)
Edit: About 11 o'clock like I thought but is behind one of the O2 Sensor connectors still on the driver's side. I am by myself and can spot the loom from the top for the CPS but I need a second person up top to tell me I am wiggling the right wire from below.
Last edited by Ralph77; Jan 21, 2018 at 05:11 PM.
CF Veteran
Joined: Sep 2009
Posts: 8,567
Likes: 20
From: ☼ Blackhole Sun
Year: My Jeep is a GMC
Senior Member
Joined: Mar 2010
Posts: 589
Likes: 0
From: Alaska
Model: Cherokee(XJ)
Just did mine and the fastest way ever was with a flex head ratchet wrench from the engine bay standing on my spare on the garage floor. New one dropped in 5 min. Took old out with the long extensions from the bottom , and even with a buddy took 20 min.
oh yea mine still won't turn over....
oh yea mine still won't turn over....
- Marc
CF Veteran
Joined: Oct 2013
Posts: 2,097
Likes: 12
From: Tarpon Springs, FL / Denver, CO
Year: '98
Engine: 4.0 I6
I used like a gang of 3/8" extensions (probably all that I had), and a wobble adapter or two. Didn't take me that long from what I remember, but I am sure having a lift makes it easier
Newbie
Joined: Apr 2019
Posts: 2
Likes: 0
From: Jacksonville,Fl
Year: 1996
Model: Cherokee (XJ)
Engine: 4.0 H.O
My wife and I visited Scotland back in 2012. We stayed in Broughty Ferry,Dundee but we went several places Loch Ness, St.Andrews,Stirling,Edinbourgh. We loved Scotland and would move there if we could. I own a 1996 Cherokee SE 2 door with the 4.0 H.O. motor and I am having hard starting issues. So I believe its the CPS. I read this thread today and saw your post.
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