What are the effects of a faulty camshaft position sensor?
2 Answers
The effects of a faulty camshaft position sensor: 1. The car has high-voltage sparks, but it takes a long time to start, and the car can eventually operate; 2. During the starting process, there will be a phenomenon of crankshaft reversal, and backfire may occur in the intake manifold; 3. The car idles unstably, shakes severely, similar to a car misfiring; 4. The car lacks power during acceleration, struggles to pick up speed, and performs slightly better when the RPM exceeds 2500; 5. The car will experience high fuel consumption, excessive exhaust emissions, and the exhaust pipe may emit unpleasant black smoke. The camshaft position sensor is a sensing device, also known as a synchronization signal sensor. It is a cylinder identification and positioning device that inputs the camshaft position signal to the ECU and serves as the main control signal for ignition.
My driving experience made me realize how troublesome a faulty camshaft position sensor can be. Last time on the highway, the engine suddenly shook violently, as if it was about to stall, which nearly gave me a scare. Starting the car became a real challenge—I had to turn the key for ages before the engine would reluctantly start, with the check engine light glaring at me. After some research, I learned that this sensor monitors the camshaft's position and controls the timing of ignition and fuel injection. Once its signals get messed up, fuel combustion becomes inefficient, leading to noticeably weaker power and difficulty climbing hills. Fuel consumption also skyrocketed, costing me a lot more on gas each month. Leaving it unrepaired for long could even wear out internal components like piston rings, doubling the repair costs. Now, at the first sign of trouble, I get it checked immediately—safety comes first, no joking around.
