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.
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.
168 bhp 5800 rpm
On a Cummins engine, the RPM sensor, often referred to as the crankshaft position sensor (CPS) or speed sensor, is typically located near the flywheel or at the rear of the engine block. Its exact position can vary depending on the specific engine model and configuration. For the 59 Cummins, it is generally found on the passenger side of the engine, near the transmission. Always refer to the specific service manual for your engine model for precise location details.
on a1990 Isuzu pickup 2.6 same engine 7.1 psi at 900 rpm and after warm up 58.9 at 4000 rpm
on a 1989 Isuzu pickup with a 2.6 same engine 12 degree b.t.d.c. at 900 rpm
by sensing engine RPM it can teel if engine is not running smooth by sensing the rotation of the rpm's of the engine.
map sensor or a bad vacum leak
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
The throttle position sensor tells the engine control module what you are doing with the throttle as you drive. If you let your foot off of the accelerator pedal the throttle position sensor sends that information to the engine control module and the engine will receive less fuel and it will lose rpm.
diagram of rpm in trooper
The year, make, model and engine info would help.
To connect the RPM gauge on an Isuzu Elf truck, first locate the vehicle's wiring harness that connects to the gauge cluster. Identify the wire for the tachometer signal, typically found near the engine or on the ignition coil. Connect this wire to the RPM gauge input, ensuring secure connections. Finally, test the gauge by starting the engine to confirm it displays the correct RPM readings.