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  #1  
Old 09-14-2007, 03:11 PM
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Default Replacing Crankshaft Position Sensor

Replacing Crankshaft position Sensor (CPS)

Special Thanx To: Cattle Hauler


(1) you need to disconnect both negative battery cables at both batteries. I used a 1/2 inch deep socket to remove the cables from the battery terminals.

(2) Remove starter motor to get to CPS. The sensor is located on the driver's side of the engine with the starter motor placed in front of it. If you lay on your back under the drivers side, with your head next to the right front tire, you will see the starter motor.






Disconnect the wires from the terminals on the starter motor. I used a 5/16" socket to remove the small ground wire and a 15mm socket to remove positive wire. I Then used a 10mm 12 point socket to remove the three mounting bolts holding starter motor and then detached starter and laid it on ground.

(3) Once Starter motor has been removed, the CPS will be in front of the oil dipstick tube that is going into the oil pan. Disconnect the electrical connector and remove mounting bolt, and hold down bracket.



CKP without starter






Block with no CPS installed




Once the electrical connector was removed, I used a 10mm socket to remove the mounting bolt and used an end of a flathead screwdriver to pry the bracket off of the sensor. I then pulled the CPS from the engine block by rotating the sensor back and fourth and pulling outwards. It took a little while to get the sensor worked all the way out of the engine block. Be careful.

4) Apply clean engine oil to the o-ring on the new CPS senor and clean around CPS mounting hole on the block. To pervent tearing of the o-ring, install new CKP into engine block using a twisting action. Once in place, position hold down bracket and install mounting bolt. Tighten bolt to 24 N*m (18ft. lbs.) torque.



View of new CPS






New Sensor, installed




5) CPS is now installed and the starter motor is ready to be mounted back on the engine.



The hardest part was to hold the starter while putting the bolts back in. Use a 10mm 12 point socket head to tighten. Connect the positive and ground wires back up to starter motor. Connect both negative battery cables at both batteries and you have completed the installation of a new Crankshaft Position Sensor (CPS). Good luck!



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Last edited by Whit; 09-14-2007 at 03:14 PM..
  #2  
Old 11-07-2007, 07:15 PM
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Do you happen to have the part # for the cps?

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  #3  
Old 11-07-2007, 07:49 PM
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Dodge number: 05015488AA
Cummins Number: 4002066 or 4002064

Don't know why two numbers for Cummins but the parts manual shows both.

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374.2/846.7 at 30psi

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  #4  
Old 11-07-2007, 08:21 PM
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Could a falty cps make a incorect tach reading? I read 500-550 rpm at idle and cant get it above 1800 in any condition.
  #5  
Old 07-16-2008, 03:32 AM
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Originally Posted by Monster Truck View Post
Could a falty cps make a incorect tach reading? I read 500-550 rpm at idle and cant get it above 1800 in any condition.
Yes

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  #6  
Old 07-16-2008, 03:55 AM
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yeah that thing is mothaf***er to get out, mine was stuck in there good, i wont tell ya how i got out, but it did involve a hammer.

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