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Crank position sensor removal


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#1 t-bone

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Posted 25 September 2013 - 10:18 AM

I am trying to replace the CPS on an automatic, 6 cyl, 94 wrangler.  The CPS is difficult to get to on top of the drivers side bellhousing but I managed to get the bolt out but for the life of me I can't get the CPS to come out.  I tried prying from the top and bottom and pulling with pliers from the top.  I am at the point where the plastic is starting to break off in pieces.  

 

My next idea was using a slide hammer and a drywall screw from the top or use a long punch/chisel and tap it out from the bottom.  

 

Any other ideas would be helpful.


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#2 wetskier2000

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Posted 25 September 2013 - 10:39 AM

Hmmmm.... 1 bolt or 2??


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#3 t-bone

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Posted 25 September 2013 - 10:57 AM

1 bolt


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#4 Juiceman

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Posted 25 September 2013 - 11:06 AM

On crank sensors that get stuck, I have a technique that uses a screw.

 

Heat the screw up cherry red, then screw it into the sensor and let it cool.  Then you'll have something to grab hold of to pull it out.

 

That's tough on the Jeep, since it's in the bellhousing, just hard to access, but it's a plan of action anyway.



#5 t-bone

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Posted 25 September 2013 - 12:38 PM

That's a good idea.  What kind of screw? drywall or lag?

 

On crank sensors that get stuck, I have a technique that uses a screw.

 

Heat the screw up cherry red, then screw it into the sensor and let it cool.  Then you'll have something to grab hold of to pull it out.

 

That's tough on the Jeep, since it's in the bellhousing, just hard to access, but it's a plan of action anyway.

 

 


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#6 Treasurer

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Posted 25 September 2013 - 12:41 PM

Did you remove both screws that hold the CPS onto the bell housing?


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#7 POS_YJ

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Posted 25 September 2013 - 01:27 PM

I was gonna say...thought they had 2 bolts holding them in? I can check for you in a bit...I have a complete 4.0L sitting on my garage floor...
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#8 t-bone

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Posted 25 September 2013 - 02:58 PM

I'm not at the jeep right now but I am pretty sure it is one bolt.  The replacement from Mopar is one bolt.


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#9 Juiceman

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Posted 25 September 2013 - 02:59 PM

That's a good idea.  What kind of screw? drywall or lag?

 

On crank sensors that get stuck, I have a technique that uses a screw.

 

Heat the screw up cherry red, then screw it into the sensor and let it cool.  Then you'll have something to grab hold of to pull it out.

 

That's tough on the Jeep, since it's in the bellhousing, just hard to access, but it's a plan of action anyway.

 

 

 

Frankly, whatever kind of screw I can find with a pointy end on it.

 

:)



#10 Nason

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Posted 25 September 2013 - 03:07 PM

Autos use one bolt.
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#11 HEEPJEEP

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Posted 26 September 2013 - 06:53 AM

Yep, 1 bolt. Grab on it with channel locks and get it to spin in the bore. Then try to pull it out.

Did you remove both screws that hold the CPS onto the bell housing?


And it's not a CPS. It's a CKP.

CPS is the camshaft position sensor.
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#12 wetskier2000

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Posted 26 September 2013 - 08:15 AM

Grab on it with channel locks and get it to spin in the bore. Then try to pull it out.

 

 

That's what SHE said.

 

Just how do you propose to get channel locks down between the firewall and the BH?


Edited by wetskier2000, 26 September 2013 - 08:15 AM.

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#13 t-bone

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Posted 26 September 2013 - 03:11 PM

If I kneel on the valve cover I can get pliers on, but now it is starting to break apart.  I am going to give the hot screw idea this weekend.


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#14 wetskier2000

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Posted 26 September 2013 - 03:17 PM

If I kneel on the valve cover I can get pliers on, but now it is starting to break apart.  I am going to give the hot screw idea this weekend.

A hot screw is always a good idea.


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#15 Juiceman

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Posted 26 September 2013 - 04:08 PM

If pieces fall in, don't worry about it.  That flywheel will thoroughly chew up and spit out any random pieces that fall in there. 






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