The air intake valve and exhaust valve must be opened and closed at precisely the right times. The variable valve timing system is responsible for managing these two valves. When they’re opened and closed properly, it will enhance the engine performance and fuel economy of the vehicle. The powertrain control module uses variable valve timing
Category: Trouble Codes
When exhaust gases are produced by the internal combustion process in the engine, they exit the engine and travel to the catalytic converter. This is a component which is supposed to reduce the toxicity level in the gases. From there, the gases end up back in the engine cylinders where they get ignited again. After
The clutch is what securely locks the engine and transmission to each other. Most newer vehicles have a transmission control module which electronically activates and deactivates the clutch. The module operates something called a clutch actuator to control the clutch in this way. First, you have the electric motor which causes the clutch master cylinder
The exhaust system of the internal combustion engine contains a heated oxygen sensor. After the combustion process takes place and exhaust fumes come out from the engine, the heated oxygen sensor detects how much oxygen exists in the exhaust fumes. If the engine contains more fuel than oxygen, then it will cause the heated oxygen
An engine misfire is never a good thing for a vehicle. If any of the engine cylinders do not have enough fuel to burn, then it will cause a misfire in that cylinder. The engine may still run and produce power, but it won’t be enough power to satisfy the demands of the acceleration pedal.
The throttle position sensor is part of the air intake manifold’s throttle body. The main function of the throttle position sensor is to track how much air is going into the engine. This information is transmitted to the powertrain control module. From there, the module regulates how much fuel enters the engine based on the
The fuel injection system is responsible for adding fuel to the engine cylinders. The amount of fuel and the timing of the fuel injections are vitally important for successful combustion of the air and fuel mixture to take place. Then your engine can generate enough power to satisfy your acceleration demands. The powertrain control module
When you have an idle engine, the RPM must be managed to accommodate the other loads put on the engine. Some of the most common loads include the windshield wipers, heater, air conditioner, integrated GPS system, and radio. The more devices and systems that are activated, the more stress the idle engine is put under.
Engine knocking can be a very serious problem if it occurs. As you may know, the engine cylinders require the proper air to fuel ratio in order for successful combustion to take place. But when the air to fuel ratio is not correct, the mixture won’t burn evenly. It will ignite uneven pockets of fuel
There are a whole series of components in a vehicle which allow acceleration to take place. The accelerator pedal assembly has a pedal position sensor and the intake manifold has a throttle position sensor on its throttle body. Whenever you step on the gas pedal to accelerate the vehicle, you are basically demanding more power