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

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Engine knocks and engine speed falls below idle upon releasing the throttle

I have this strange problem on my 1999 Volvo V40 1.9T T4 (B4194T engine, no VVT, ~150k miles), I'll try to provide a detailed description. I noticed that only when the engine is warm, whenever I ...
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Royal enfiled classic 350 sounds like tak-tak while riding?

I bought classic 350 about 8 months ago but since after only first 15 days of riding i started noticing tak-tak like noise from nearby engine. Noise can only be heard while riding on low rpm when i ...
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40 views

High acceleration and dieing when brake is pressed

I have a 2003 Ford Taurus its been good only needed a new starter and new brakes besides the standard changes in the 6-7 yrs since i got it. Then 7 Jan 2016 hit. Since then it has been in the shop 5 ...
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46 views

Is there a rev matching device?

I understand that rev matching is acquired skill by practicing and driving more. I'd like to know if there was a device you could attach to your car that would detect and notify you if engine rev is ...
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348 views

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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166 views

Tachometer doesnt show correct RPM sometimes

On my Honda CBF 150cc , the Tachometer shows RPM correctly when i'm at a constant speed. But some times when i slow down and accelerate the RPM Needle moves unexpectedly. (say to 0 even i'm at a ...
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51 views

Idle RPM is not setting properly sometimes

I have an Apache RTR 180 (Carbureted) Sometimes, when I downshift, and when shifting down to 1st gear (to stand still), the RPM shows somewhere around 2000. The normal idle is around 1200 - 1400 RPM. ...