Does your Jeep grand Cherokee"s timing feeling off? your crankshaft position sensor may need to be replaced. Read on to learn just how you deserve to replace the yourself.

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This article applies to the Jeep grand Cherokee WJ (1999-2004).

The crankshaft position sensor is a small electronic sensor in her Jeep grand Cherokee, and it is designed to capture reading top top the place of your crankshaft. The readings climate goes come the computer in her Jeep, and also using the information, the auto can idle smoothly. If the crankshaft position sensor malfunctions in your Jeep, you will be able to drive the automobile until you revolve it off, in which instance you may not have the ability to start it earlier up. If the auto doesn"t walk in limp mode, your gas mileage will endure tremendously, so instead of it as shortly as possible is an extremely important. Check out on come learn how you deserve to replace the crankshaft place sensor yourself.

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Figure 1. Crankshaft position sensor.
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Step 1 – Disconnect the battery

Disconnect the an unfavorable battery terminal (black). Then wrap that in a bath towel to protect against it poignant with any metal.

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Figure 2. Disconnect battery (black terminal).

Step 2 – remove crankshaft place sensor

Locate the crankshaft place sensor. It"s situated on optimal of the transmission"s bell housing, under the firewall. This is a an extremely tight squeeze, so friend will have to use her ratchet with plenty of extension to with it. The sensor has actually a cable connector connected to it. The connector is under the hood, which is linked with a long wire that is connected to the sensor itself. Unplug the connector under the hood, and to get precise location top top the sensor, monitor the wire down.

From under the vehicle, use your ratchet v an extension and also swivel head to unbolt the 2 bolts stop the sensor to the transmission"s bell housing.

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Figure 3. Crankshaft place sensor diagram.
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Figure 4. Crankshaft position sensor"s connector under hood.

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Step 3 – Install new sensor

To align the brand-new crankshaft place sensor"s bolts, girlfriend will need to squeeze her hand with from the top, whereby the connector and wire go under to the sensor. If your arm doesn"t to the right in the chop squeeze, put some grease in the finish of your swivel head, and also use the to host the bolt until you align it and tighten that properly. Once you"ve tightened the bolts, start your auto to test.