Curb idle definition
Curb idle means vehicle operation whereby the transmission is disengaged and the engine is operated with the throttle in the closed or idle stop position with the resultant engine speed between 400 and 1,250 revolutions per minute (rpm), or at another idle speed if so specified by the manufacturer.
Curb idle means: (1) For manual transmission code engines, the manufacturer's recommended engine speed with the clutch disengaged. (2) For automatic transmission code engines, curb idle means the manufacturer's recommended engine speed with the automatic transmission in gear and the output shaft stalled.
Curb idle means the manufacturer’s specified idle speed for the specific motor vehicle being tested (tolerance within 50 rpm) See also Idle Mode;
More Definitions of Curb idle
Curb idle means the manufacturer's suggested engine operating speed in revolutions per minute when the vehicle transmission is placed in either the neutral or park position and the engine has reached its normal operating temperature;
Curb idle means vehicle operation whereby the transmission is
Curb idle means: (1) For manual transmission code light-duty trucks, the engine speed with the transmission in neu- tral or with the clutch disengaged and with the air conditioning system, if present, turned off. For automatic transmis-
Curb idle means, for manual transmission code light- duty vehicles and trucks, the engine speed with the transmission in neutral or with the clutch disengaged and with the air conditioning system, if present, turned off.