RPM is the acronym used for revolutions per minute. It measures the number of revolutions completed in one minute around a fixed axis, giving the speed of a mechanical component. It is commonly used to describe the perfo... More »

A car that is cold has a fast idle to quickly bring it to optimal operating conditions. This is a part of the design of the engine. Older vehicles with carbureted engines have a choke to increase the idle speed to as hig... More »

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Idle speeds vary from car to car, but for a passenger car, typical idle speeds are between 500 and 900 rpm. This idle speed also depends on the accessories that are currently running as a car's idle control system will a... More »

As of 2015, maximum torque values for Cummins ISX truck engines range from 1450 pound-feet at 1200 revolutions per minute for the ISX 400, to 2050 pound-feet at 1200 RPM for the ISX 600. ISX engines labeled "ST" feature ... More »

A person can determine if their transmission is slipping by watching the revolutions per minute, or RPM, gauge. If the gauge reads more than 3,500, it can indicate a slipping transmission. More »

An RPM gauge, also known as a tachometer, measures engine speed in revolutions per minute. Begin by selecting a location to place the tachometer, and install it using components that come with the kit. Drill a hole in th... More »

An International DT466 diesel engine, as of 2015, features 7.6 liters and 300 horsepower, and delivers about 860-pound-foot of torque at 1,300 revolutions per minute. The inline six-cylinder turbocharged engine on a cast... More »