Where is the throttle located in a minivan?
1 Answers
The throttle in a minivan is positioned behind the air filter of the intake system and in front of the intake manifold. The upper part is connected to the air cleaner, while the lower part links to the engine block. The throttle serves as the throat of the car engine, connecting the air cleaner and the cylinder block. It controls the engine's air intake. When the driver presses the accelerator pedal, it doesn't directly control the fuel injection but rather adjusts the throttle's opening. There are two types of throttles: traditional cable-operated and electronic. In traditional engines, the throttle mechanism operates via a cable connected at one end to the accelerator pedal and at the other to the throttle linkage plate. Electronic throttles use a throttle position sensor to regulate the opening angle based on the engine's energy requirements, thereby adjusting the air intake. If the throttle is not cleaned regularly, carbon deposits can accumulate. How to determine if the throttle needs cleaning: Use a diagnostic tool to read the throttle's opening at idle. If it's significantly larger than when the vehicle was new, cleaning is required. Alternatively, base it on mileage—typically around 20,000 kilometers, though this varies with usage (e.g., vehicles frequently driven on dusty roads require more frequent cleaning). Another method is to remove the intake duct and inspect the throttle for carbon buildup. Throttle cleaning methods include disassembly cleaning and non-disassembly cleaning. Disassembly cleaning involves removing the entire throttle assembly and thoroughly cleaning it with a specialized cleaner. This method is more labor-intensive but ensures a thorough clean. Non-disassembly cleaning has two approaches: one involves removing the intake duct and spraying cleaner onto the throttle while the engine is running; the other involves spraying cleaner onto the throttle and wiping it, requiring two people. This method is convenient but less effective, suitable for throttles with minimal carbon buildup. Electronic throttles integrate a throttle control unit, so care must be taken during cleaning to avoid damaging the internal circuit board.
