Table of Contents
Where is the CPS sensor located?
The location of the crankshaft position sensor can vary from one vehicle to another. Obviously it must be close to the crankshaft, so it is most often located on the front underside of the engine. It can usually be found mounted to the timing cover. Sometimes it may be mounted at the rear or the side of the engine.
What is a CPS on a Jeep?
The CPS is responsible for reading the location and speed of the crankshaft and sending that information to the Jeep’s central processing unit (CPU), where the information is used to calculate spark timing for the ignition system.
Can a bad crankshaft sensor cause no start?
The most common symptom associated with a bad or failing crankshaft position sensor is difficulty starting the vehicle. If the crankshaft position sensor is having a problem, the vehicle may have intermittent starting issues or not start at all.
When to replace the CPS plug on a Jeep Wrangler?
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.
How to change crankshaft sensor on Jeep Wrangler?
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.
How does the pkcm work on a Jeep Wrangler?
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.
What kind of plug does a Jeep Wrangler have?
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.