Electronic Throttle Bodies

Tested to OE Performance Specification

The electronic throttle body (ETB) is a main part of an electronic throttle control (ETC) system. The ETB controls the volume of air flowing into the engine. It features a butterfly valve which opens and closes according to a signal from the engine control unit.
Instead of a traditional throttle body with an accelerator cable, Hitachi Automotive Systems Americas, Inc.’s ETB utilizes a microcomputer to control the valve opening quickly and precisely. Precision is essential to keep engine torque at a constant level when changing the air/fuel ratio. A more accurate ETB translates to improved fuel economy and emissions performance.

Features and Specifications

Compact, lightweight DC Motor – Allows for easy mounting in a variety of engines
Equipped with a multiple-output throttle sensor - Allows for a more accurate signal output
Non-contact position sensor – Increases durability
Precise valve opening – Maintains stable performance at a wide range of environmental conditions

Bore sizes:

Signs to Service:

The engine stalls or is likely to stall during deceleration or stopping
The engine stalls or is likely to stall when the engine is warmed up or re-started
Engine speed decreases while accelerating on a curved road
Idle speed is reduced