With more and more new-car buyers choosing automatic transmissions over manuals, why do tachometers still have such a large presence on dashboards? The tachometer displays engine speed in revolutions ...

Q: My Ford had a dead battery. When I jumped it, the speedometer stuck at 160 miles per hour and the tachometer is stuck at 6,000 RPMs. What can I do? Car Doctor: How to spot a 'flood' car before you ...

A tachometer used to be an accessory added to the dash of only the sportiest of cars, but now they’re pretty much standard equipment on everything from sleek coupes to the family truckster. If your ...

RPM stands for revolutions per minute, and in cars, it measures how many times the engine’s crankshaft makes one full rotation every minute and how many times each piston goes up and down in its ...

Yeah, it might be a nerdy gearhead thing, but as enthusiasts we want a lot of information about what our cars are doing. Unfortunately, the manufacturers don't quite see it our way, so cars are ...

Q: My Ford had a dead battery. When I jumped it, the speedometer stuck at 160 miles per hour and the tachometer is stuck at 6,000 RPMs. What can I do? A: I would start by properly charging the battery ...