Here's a link that may help. The RPM sensor is also known as a crank position sensor.
http://www.volvoclub.org.uk/faq/EngineSensors.html#Crank_Postition_Sensor
It is the RPM Sensor or sometimes called the Crank Position Sensor.
Code 214 engine speed (RPM) sensor Intermittant signal
Ohh my little one.... After two days of on-line searches and two Volvo manuals I learned that there are no crank sensors referred in the manuals. I bought it as a "Crankshaft Position Sensor'' but it`s referred as "RPM Sensor" It`s position is on TOP of the flywheel next to the engine. Directly UNDER the distributor cap and the camshaft sensor cover. I J077535
RPM surge in a Volvo 850 can be caused by several factors, including a malfunctioning throttle position sensor, vacuum leaks, or issues with the idle air control valve. These problems can disrupt the engine's air-fuel mixture, leading to erratic engine behavior and fluctuations in RPM. Additionally, problems with the fuel delivery system or ignition components can also contribute to this issue. Regular maintenance and diagnostic checks can help identify and resolve the underlying causes.
For an NPR the rpm sensor is located left rear of engine by the frame rail. Its actually the engine speed per service manual but when you need to replace the sensor the parts department calls it the rpm sensor. Good luck.
between 500 and 850 rpm
850 RPM,
crank sensor
it is located at the side of the rotary injection pump
The rpm is acquired on almost all computer controlled vehicles from the crank sensor. drl
750-850 non adjustable
To find pictures of the RPM sensor for the ISUZU 4JG2 engine, you can search online automotive parts retailers, forums, or websites specializing in ISUZU vehicles. Websites like eBay, Alibaba, or dedicated ISUZU enthusiast forums often have images and detailed listings. Additionally, service manuals or repair guides for the 4JG2 engine may include diagrams and photos of the RPM sensor's location and specifications.