| Crankshaft Position Sensor (CKP) Replacement |
| on a 1999 Dodge Ram 3500 Cummins 24v Turbo Diesel engine |
| Around 87,850 miles my tachometer started to not work sometimes and then would start working again and my check engine light came. I was hauling cattle and could feel the truck lose power everytime the tach would not read. Then the tach would bounce back up to reading the RPM's and I would feel the power like it was kicking back on. I went to a Dodge Dealer and talked to them and they agreed that is was the CKP so I picked one up which set me back $63.00 came home and replaced it. Below is the step by step on how I replaced my CKP. And it did correct the problem with the tachometer and has worked everysince and no check engine light on or loss of power. |
| (1) you need to disconnect both negative battery cables at both batteries |
| (2) Need to remove starter motor to get to CKP sensor. 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 engine with your head next to the driver side front tire you will see the starter motor |
| I used a 1/2" deep socket to remove cables off battery terminals |
| 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 on ground. |
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| (3) Once Starter motor has been remove the CKP will be in front of the oil dipstick tube that is going into oil pan. Disconnect the electrical connector and remove mounting bolt and hold down bracket. |
| Once the electrical connector has been removed I used a 10mm socket to remove the mounting bolt and used an end of a flatheaded screw driver to pry the hold down bracket off the sensor. I then pulled the CPK from the engine block by rotateing the sensor back and fourth and pulling outwards. It took alittle while to get the senor worked all the way out of the engine block. |
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| Click on any pic to see bigger |
| (4) Apply clean engine oil to o-ring on new CKP senor and clean around CKP mounting hole on engine block. To pervent tearing 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 |
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| (5) CKP is now installed and the starter motor is ready to be mounted back on engine |
| The hardest part was to hold the starter while putting the bolts back in and use a 10mm 12 point socket head to tighten. Then connect the positive and ground wires back up to starter motor. Then connect both negative battery cables at both batteries and you have completed the installtion of a new Crankshaft Position Sensor (CKP) |
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| Palmer Livestock Hauling, Cynthiana Kentucky |
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