Whenever the first cylinder is at the top dead center during engine rotation, the sensor transmits a signal to the onboard controller (TDC). This is how to remove and change the camshaft position sensor for the 5.0 engines if you have the code P0340, part number is for BWD CSS149 Show more. The cylinder identification sensor provides this information.
just as earlier stated, The ECU in a sequential fuel injection system must decide which cylinder to ignite next. The working of a camshaft position sensor is less complex and can be easily understood. Read more: Understanding car sensors Diagram of CAM position sensor: The engine would not be able to work effectively without this information. This information is used by the ECM to determine the ignition timing as well as the timing of the fuel injection required by the engine. The camshaft position sensor collects and communicates data on the vehicle’s camshaft speed to the engine control module (ECM). In a sequential system, the CAM sensor is typically employed to determine which injector to fire and for the COP or coil-on-plug ignition system coil firing event. The crank and cam sensors are in time with one another.
The CAM sensor, also known as the camshaft position sensor, is responsible for informing the ECM of the camshaft position. This information will be used to alter the spark timing and fuel injector operation. To determine which cylinder is on its power stroke, a camshaft position (CMP) sensor is used by the car’s computer to monitor the rotating position of the camshaft relative to the crankshaft position. Now, all you need to do is go ahead and start up your vehicle and make sure you don't have a check engine light. Listen for the click, give it a nice tug. Let's go ahead and torque this to 89-inch pounds. Let's just go ahead and clean up the area. You just wanna be careful not to break it off into the engine. If, for some reason you can't, you can use something and just carefully pry on it. Grab onto that sensor, give it a little wiggle, see if you can slide it out. MANUFACTURER: AIP Electronics Compatible with 1993-1995 Ford Aerostar Explorer and Ranger 4.0L V6 Be Sure to Check for Correct Fitment Using the Chart. Now, we're just gonna go ahead and remove the mounting bolt that's located right underneath where the wiring harness was. I always like to look at the wiring to make sure I don't see any funny colors. And then go ahead and draw this right off of there. To replace these, what you'd wanna do is go ahead and press on the tab that's in the center of the wiring harness. There's gonna be one over on the passenger side, and then there's gonna be one located over on the driver side, right above the power steering pump. 
To find our cam position sensors, I'm gonna let you know there's two of them.
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