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Topic: How To: Crankshaft Position Sensor

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How To: Crankshaft Position Sensor

So your Jeep wont' start all of the sudden and you're confused.confuse  Well, it just might be your crankshaft position sensor.  I did this in the late summer of, um, 2007 I think.  This, just like all of my write ups so far, have been on my 1996 Cherokee.  Here's the culprit.evileye


First of course disconnect the + (red) terminal on the battery.  Secure away from battery.

Now since you're on top, here's a pic of the wire plug that connects into the wiring harness.


Okay, before we move on, I highly suggest getting an assortment of extensions and 'socket u-joints'/swivels.  I found a good deal on an assortment at Sears and I got those along with a 3 foot or so extension.  See?  Men go on spending sprees too.smile
The above comment about men was added for the sake of our female readers.

After trying a number of different arrangements, I found that this setup worked best.  It's a 3/8" ratchet for scale.


I don't have any pics of how I routed this whole assemblagecry, but I think the ratchet was just fore of the transmission crossmember.  Some may find it easier to turn the ratchet and extentions from behind it as well.  Each to their own.

Well, get on the ground and roll under the Jeep on the drivers side.  Looking up into the darkness here's what you'll see with a good light.


The little black thing with a wire that goes up up and away near the exhaust manifold piping is what we're after (top left of photo).  It has 2 bolts, I don't remember the size of them.  Remove the top bolt first and install the bottom bolt first.  This will prevent the bolts from falling into the gap left with the crank position sensor out of place.


Once the sensor is hanging on the end of the wire, pull it up through the intake manifold and disconnect from wiring harness.  Send the new one down the same way, and connect to wiring harness.

Line it up and install bottom bolt, then top bolt.


Remove tools from near vehicle, re-attach battery cables, and see if she starts.

-- Edited by ChevelleSSLS6 at 19:54, 2009-01-19

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My Fleet
1996 XJ "Snowball"- 3.5" lift, bunch of little mods.  I hate pegleg rear axles!
1974 AMC Javelin "Jade Grenade"- 360v8, 4sp, green inside and out. Underfunded Project.
2009 Kawsaki Vulan 900 "Rocket III"- Summer DD

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very nice, my CPS went out on the highway a few months ago. 50 bucks for a shop to take it off, clean it and put it back on

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How much $$$$ for the CPS ??????. Or did i miss that ?

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1999  XJ  SPORT,  4.5'' LIFT,  32'' X 11.50''  TIRE'S



" IF  IT  AINT  RUFF  IT  AINT  ME  !  "

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About $50 or so... some places more, others less. I'm heading to the boneyard today to nab a couple for spares.smile

Just gotta remember to carry around a bunch of extensions in the Jeep too now if they're to be of any use.

-- Edited by ChevelleSSLS6 on Friday 3rd of April 2009 11:13:59 AM

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My Fleet
1996 XJ "Snowball"- 3.5" lift, bunch of little mods.  I hate pegleg rear axles!
1974 AMC Javelin "Jade Grenade"- 360v8, 4sp, green inside and out. Underfunded Project.
2009 Kawsaki Vulan 900 "Rocket III"- Summer DD

 
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