2013 jeep wrangler crankshaft position sensor location

Crankshaft Position Sensor on the Jeeps (4.0 & 2.5) reads a set of slots that is spinning on the flywheel. These slots cause the CKPS to send a pulse to the Power Control Module (ignition computer/brain box) indicating engine speed. Also the PKCM uses this pulse signal to set ignition timing and supplying the tachometer with the RPM that you see in the dash.

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Crankshaft Position Sensor "How to"

Where is the sensor located?

Sensor is located on the driver’s side of the engine, back of the block where the transmission joins the block. Bolted to the transmission bell housing with 2 bolts and has a long wiring harness/plug coming up by the fuel rails.

Will it trigger the check engine light if the sensor is faulty?

Yes it will trigger the “check engine” light. But most of the time when the Crankshaft sensor goes the engine is dead as a hammer. It will turn over but will not fire at all. Occasionally a CPS will cool down long enough to fire up again. Then you get you down the road a little bit and it leaves you stranded again when it gets hot and decides to quit.

Why does it fail?

Heat is the biggest issue for this sensor going bad.

How do you test a Crankshaft Position sensor to see if it’s bad?

You just need a Multi-meter for this test.

Set your meter to measure ohms (Ω) using the scale between 1K-10K. Place your leads across posts B & C of the CPS plug.

You should get a reading of open or no resistance. If you get a reading of low resistance, replace the sensor.

 On all 2.5L & 4.0L engines (except YJ models that come with the 4.0/automatic combination) there are 2 bolts and the plug to deal with. Unplug the harness. Just take out those 2 bolts and pull the sensor out of the bell housing. For the 2.5L/automatic the sensor is help in place with 2 nuts instead of bolts. The YJ Wranglers that come with the 4.0/automatic, the sensor uses a single slotted hole to adjust the mounting depth. When purchasing a new sensor for the 4.0/auto YJ there will be paper spacer attached to the end of the sensor that gets inserted into the bell-housing. This spacer sets the correct depth to be installed. Simply drop the sensor in until the paper spacer bottoms out in the hole, then tighten the bolt. When the engine turns over it rips the paper off the sensor, don't worry .. it's not gonna hurt anything having that tiny paper shard in there. As for the all the others that do not use the paper spacer, simply drop it in until the sensor body is flush to the bell housing, tighten the bolt and you are done.

Replacing the sensor in Wranglers isn’t too bad. Cherokees are a bit more troublesome to access. My Wrangler I can get it from the bottom or top. Cherokees because of having more goodies in the way, they tend to be a bit easier to get from the bottom. Use an extension or two and reach over the bell housing of the transmission to reach the bolts.

A quick note about the different crank shaft sensors, there were 2 styles. One has the round plug which was typically the 1991 & 1992 models. The other style has a flat plug which was the 1993 and up models. But, AMC/Jeep was known for "cross-over" parts. The images below will take you to Amazon where you can see close ups of the two plug styles to ensure you get the correct one.

INSTALLATION NOTE: When you go to re-install the CKPS don’t get the bright idea of putting a bolt through the sensor and then drop the sensor into the hole it goes in. Why you ask? Simple .. it would be way too easy for that little bolt to be dropped and fall right into the little hole where the Crankshaft Position Sensor goes. If that happens you will have to pull the transmission back to get the bolts out, NOT FUN! Put the CKPS into the hole first, fully seating it into place. THEN put the bolts in. The hole is now plugged so nothing can fall in. 

Video of Crankshaft Position Sensor

Replacement and Installation

2013 jeep wrangler crankshaft position sensor location

Caution: The magnetic timing wheels must not come in contact with magnets or any other strong magnetic field. This will destroy the timing wheels ability to correctly relay camshaft position to the camshaft position sensor.

2013-2021 Jeep Wrangler Camshaft Position Sensor

 The camshaft position sensors are located at the rear of the cylinder head covers and are bolted to the cylinder head.

1. Disconnect and isolate the negative battery cable.

2. Remove the engine cover.

2013 jeep wrangler crankshaft position sensor location

3. Disconnect the electrical connector (1) from the CMP sensor.

4. Loosen the sensor mounting bolt (2).

5. Pull the sensor and mounting bolts from the cylinder head cover.

6. The O-ring seal (1) can be reused if not damaged.

2013 jeep wrangler crankshaft position sensor location
Jeep Wrangler Camshaft Position Sensor 3

Installation

1. Clean out the camshaft position sensor mounting hole (2) in cylinder head.

2. The CMP sensor seal (1) can be reused if not damaged.

2013 jeep wrangler crankshaft position sensor location

3. If required, install a new CMP sensor seal (2( in the cylinder head cover.

  • Lubricate the CMP sensor  seal inner and outer diameters with clean engine oil.
  • Place the CMP sensor seal (2) on the Cam sensor/ spark plug tube seal installer (1)
  • Push the seal into the cylinder head cover until the base of the seal is seated.
  • Remove the tool.

2013 jeep wrangler crankshaft position sensor location

Note: A properly installed CMP sensor seal (1) will have a 1.5-2.0mm gap (2) between the cylinder head cover and the seal upper flange.

4. The sensor mounting bolt O-ring (1) can be reused if not damaged.

5. Apply a small amount of engine oil to the sensor mounting bolt 0-ring (1).

2013 jeep wrangler crankshaft position sensor location

6. Install the CMP sensor the cylinder head. Tighten the mounting bolt (2) to 9 Nm (80 in. lbs)

7. Connect the electrical connector (1) to the sensor. 2013-2021 Jeep Wrangler Camshaft Position Sensor

The CMP sensor identifies the position of the camshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM). The ECM uses this data to determine the timing of the ignition, as well as the timing of the fuel injection required by the engine. When the sensor fails to do its job, the engine can’t function properly.

When not replaced, the vehicle could experience hard starting (or failure to start), long crank time, misfire, decreased power, spark plug fouling, catalytic converter failure, poor fuel economy or intermittent shutdown … all fine reasons to replace the camshaft position sensor.

Often, these symptoms will be accompanied by the dreaded “check engine” light. If so, an automotive computer scanner should be able to confirm whether or not the sensor is the problem. Many automotive supply stores will scan your vehicle’s onboard diagnostic system free of charge.

If you determine the camshaft position sensor is the problem, the good news is that replacement is usually very simple, if you can easily gain access to the sensor. The CMP sensor is mounted in several different places, depending on the model. The sensors are specific to vehicle and range in price from $10 to more than $80.

2012-2021 Jeep Wrangler Alternator Replacement

2013-2021 Jeep Wrangler Camshaft Position Sensor

Contact

2013-2021 Jeep Wrangler Camshaft Position Sensor

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Where is the camshaft sensor located on a 2013 Jeep Wrangler?

The camshaft position sensors are located at the rear of the cylinder head covers and are bolted to the cylinder head..
Disconnect and isolate the negative battery cable..
Remove the engine cover..
Disconnect the electrical connector (1) from the CMP sensor..
Loosen the sensor mounting bolt (2)..

What are the symptoms of a faulty crankshaft position sensor?

Symptoms of a Bad or Failing Crankshaft Position Sensor.
Issues Starting the Vehicle..
Intermittent Stalling..
Check Engine Light Comes On..
Uneven Acceleration..
Engine Misfires or Vibrates..
Rough Idle and/or Vibrating Engine..
Reduced Gas Mileage..