The check engine light will turn on whenever any situation is found to be incompatible with predefined values. ECU monitors are responsible for comparing and reporting all activity that takes place in the car, including the engine. Ignoring the fluctuations in RPM can cause the engine to show signs of wear and tear early.Įlectronic Control Unit (ECU) in modern cars allow for any unusual activity to be determined by the check engine light indication.
Inappropriate idling in an engine is usually the direct cause of rough handling.
Bad VVT timing results in the flow of additional oil to the engine. This is usually seen in the form of RPM fluctuations. The first sign of a malfunctioning VVT timing solenoid is inappropriate idling in the engine. There are many symptoms of a bad timing belt. This leads to problems while starting the car. Passage of current and connection to the solenoid is interrupted when there is a bad VVT timing solenoid. Solenoid valves follow the electronic fundamentals of electromagnetism to control oil flow by drawing a miniscule amount of current from the battery. This ensures that the right amount of oil is supplied to the engine at the right time, increasing fuel efficiency. VVT timing solenoid is responsible for altering valve lift timing in engines. Variable Valve Timing (VVT) solenoid is used in most modern cars to improve fuel economy and performance.
