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Have you ever noticed unstable idle, stalling on acceleration and bucking in your car? Well, this could be an issue with your Camshaft Position Sensor.
A cam is fastened to the shaft to form the integral part of the camshaft. The movements of a camshaft in a rotational motion determines the opening and closing of the valves.
Opening and closing of valves in the engine system, enhances fuel to enter and the exhaust to exit out of each cylinder. Therefore, it is essential to have the perfect timing of the camshaft movements.
The camshaft fitted with a sensor communicates to the engine computer on when to release fuel from the injector to ensure it happens at the same time the camshaft opens the intake valve.
When using engines fitted with 3-wire sensors, the CMP variably hesitates the sensor. The highest mark on the camshaft projections prompts the CMP hesitating the sensor. The distributor engine utilizes the conventional distributor fitted with Hall Effect transistor.
The three-wire cam uses a unique Hall Effect device.
A tiny current flow through the coil causes the contact to trip, thus turning on a large circuit. A real small current streaming from terminal one to terminal two allows a real high current flow from terminal one to terminal three. While using the Hall effect transistor, the tiny current is not applicable.
Instead, there is the ignition of the high-current path by the magnetic fields. The magnetic fields could arise from a magnet fitted in the rotating part under the sensor or from a notch already disturbing the sensor.
What are the signs of a faulty CMP? These symptoms include intermittent rough running, hesitation, bucking, unstable idle, prolonged crank time on a cold engine, stalling on acceleration, stumble, and lousy fuel budget.
Stay calm as we explore ten steps on…
If you are the Do-It-Yourself type of a person, then you can consider replacing the Camshaft Position Sensor. But how do you go about it? Here are simple steps to go about the process.
(CAUTION! Before detaching the CMP sensor, set the cylinders from number 1 to 10 After Top Dead Corner of the thumb stroke. Master the arrangements of the sensor’s electrical connection so that you make sure it remains the same after the installation.)
After removing the existing and faulty Camshaft Position Sensor, here is how to go about installing a new one.
The 3-wire sensor is applicable when the car’s computer requires a constant 5.0 voltage, and the produced signal is tiny and needs to be amplified for it to be of use. These signals are subject to be affected by interference from radiation signals. The current flowing via the spark plug radiates out to other wires nearby. Therefore, it is always advisable to put wiring harnesses back to where they belong.
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