Denver bs thread
So I replaced my crank position sensor yesterday and she started right up. Tested it about 10 times and all was well. Took it around the block and she sputtered and died. Wouldn't crank again and I had to tow it back. Sounds like no spark but I figured the cps would fix that. Any ideas before I go digging


Junior Member
Joined: Aug 2012
Posts: 48
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From: hudson
Year: 1991
Model: Cherokee
Engine: 4.0 HO
So I replaced my crank position sensor yesterday and she started right up. Tested it about 10 times and all was well. Took it around the block and she sputtered and died. Wouldn't crank again and I had to tow it back. Sounds like no spark but I figured the cps would fix that. Any ideas before I go digging


Junior Member
Joined: Jan 2013
Posts: 93
Likes: 0
From: Aurora, CO
Year: 1993
Model: Cherokee
Engine: 4.0HO
No check engine light except when it wont start, but that's normal. CEL is always on when the ignition is on and the engine is not running
I have not pulled codes, This one is a 94 so is it just OBD1? Can I rent a code reader from Auto zone or something? My reader is an OBD2 only reader so I have never messed with OBD1. Although im sure codes would help. I've read a post about the codes corresponding to a blinking check engine light after 3 key on/offs but I have never been able to get that to work. I haven't tried it on this jeep so I'll give it a try.
Last edited by slimjim9059; Mar 2, 2013 at 04:27 PM.
Junior Member
Joined: Jan 2013
Posts: 93
Likes: 0
From: Aurora, CO
Year: 1993
Model: Cherokee
Engine: 4.0HO
figured it out right after I posted, I updated the post but you caught me! lol
I got the CEL flash to work but its reading 3 5 5. I'm going to do it again maybe its actually 1 2 5 5 because they're all double digits right? Since I had the battery unhooked
I got the CEL flash to work but its reading 3 5 5. I'm going to do it again maybe its actually 1 2 5 5 because they're all double digits right? Since I had the battery unhooked
Junior Member
Joined: Aug 2012
Posts: 48
Likes: 0
From: hudson
Year: 1991
Model: Cherokee
Engine: 4.0 HO
55 is end of codes
Mine was acting similar. Ended up mainly being the dist was bad. Try pulling the cap and rotor and cleaning the stator. Pull the metal lobe and use emery cloth to clean it up. Might only be a temp fix but will isolate the prob to the cam sensor
Installed JCR steering box spacer and MORE steering brace today. Still need to run my hand throttle. Thanks Frank!
Also want to make a cowl scoop. Ol heep isn't getting enough air with the spectre, especially when the defrost is on. Recommendations on material? Just sheet metal, or do I need more hoss metal.
Also want to make a cowl scoop. Ol heep isn't getting enough air with the spectre, especially when the defrost is on. Recommendations on material? Just sheet metal, or do I need more hoss metal.
Last edited by mr white; Mar 2, 2013 at 05:45 PM.
Junior Member
Joined: Jan 2013
Posts: 93
Likes: 0
From: Aurora, CO
Year: 1993
Model: Cherokee
Engine: 4.0HO
12 is the battery has been disconnected within last 50 cycles or something like that.
55 is end of codes
Mine was acting similar. Ended up mainly being the dist was bad. Try pulling the cap and rotor and cleaning the stator. Pull the metal lobe and use emery cloth to clean it up. Might only be a temp fix but will isolate the prob to the cam sensor
55 is end of codes
Mine was acting similar. Ended up mainly being the dist was bad. Try pulling the cap and rotor and cleaning the stator. Pull the metal lobe and use emery cloth to clean it up. Might only be a temp fix but will isolate the prob to the cam sensor

BOOM, Altough I saw your post after I found this, I still give you credit because it would have got me there. I was trying to see if I had spark at the plugs and distributor, I pulled this off(the wire going into the distributor, not from the distributor to the plugs) and decided to swap it with the one on my other jeep. She fired RIGHT up, and purrs like a kitten. It always seemed liked it was missing spark on a cylinder somewhere, and this has got to be it!
Thanks for the help Serious Offroad, Big Purp, and Crazy Monkey Ben
Last edited by slimjim9059; Mar 2, 2013 at 06:02 PM.
Senior Member
Joined: Sep 2011
Posts: 733
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From: Arvada
Year: 2000
Model: Cherokee
Engine: 4.0L Inline 6
Junior Member
Joined: Jan 2013
Posts: 93
Likes: 0
From: Aurora, CO
Year: 1993
Model: Cherokee
Engine: 4.0HO
Well when I say check it, I actually mean, They have them there. I go like every week. I'm actually going Monday to get a new plug wire. Go down there tomorrow and get one. Bring tools
Senior Member
Joined: Sep 2011
Posts: 733
Likes: 0
From: Arvada
Year: 2000
Model: Cherokee
Engine: 4.0L Inline 6
When I say check I mean I say I am going to go get one but I am too lazy and don't wanna go the jy


