RPM = number of Revolutions Per Minute. Most commonly an acronym for engine crankshaft speed.

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RPM bouncing when in idle, especially when AC in switched on

I have a diesel common-rail 1.5l engined car. Lately I am facing an issue where the RPM needle is bouncing in the tachometer when the car is idling. The normal idling RPM is around 820. When idling, I ...
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1992 Mitsubishi 3000gt sl. no power and won't go above 2k rpm

I bought an automatic 1992 Mitsubishi 3000gt sl 2 days ago. I got it cheap knowing it would have problems, and that's why I'm here. When I put it in drive and slam on the gas the car just simply ...
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Fuel Consumption and other Fuel related data from basic OBD-II parameters

I want to know how can i obtain the values of Fuel Consumption, Fuel Economy and other fuel related information from basic OBD-II parameters like Vehicle Speed, RPM, TPS etc. I have noticed that not ...
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2000 VW Beetle-Manual Transmission: Shakes at low rpms when acceleration is too high

I've been driving the car for about 5 years now, the car belong to my mother before that. I noticed the problem first in late September, early October. When I shift into a gear and accelerate, if ...