What is VVTi in Corolla?
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota. The Toyota VVT-i system replaces the Toyota VVT offered starting in 1991 on the 5-valve per cylinder 4A-GE engine. The VVT system is a 2-stage hydraulically controlled cam phasing system.
What is a VVTi gear?
In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems.
How do I know if my VVT gear is bad?
Common signs include a rough engine idle, the Check Engine Light coming on, and the engine stumbling when climbing hills or under load.
What do you need to know about Toyota VVT-i?
To understand how VVT-i works, we first need to look at its underlying technology. In a nutshell, VVT alters the timing of valve lifting to improve performance and economy in specific driving situations, usually dictated by RPM ranges.
Why does my VVT rattle when I start the car?
In certain cases, the VVT gear housing and sprocket could separate and result in the engine stopping while the vehicle is being driven, increasing the risk of a crash. Toyota theorized that the condition could be related to an engine noise issue at start-up being investigated on certain engines.
How much does it cost to replace the solenoid on a Toyota Corolla?
Toyota Corolla Variable Valve Timing (VVT) Solenoid Replacement costs $261 on average. What is the Variable Valve Timing (VVT) Solenoid all about? Variable valve timing (VVT) helps to provide smoother idling, better power delivery for everyday needs, improved fuel economy, and superior emissions control.
What kind of system does a Toyota Corolla have?
Starting system, electric cooling fan, automatic transmission shift lock system, anti−lock brake system, cruise control system Multiport fuel injection system/sequential multiport fuel injection system, charging system, SRS airbag system, seat belt pretensioners