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Other problems may be implicated in the case of older vehicles equipped with carburetors. Weak, disconnected, or mis-connected throttle return springs, worn shot-pump barrels, chafed bowden cable housings, and cables which jump their tracks in the throttle-body crank can all cause similar acceleration problems.
In February 2010, National Public Radio obtained the full NHTSA database of 15,000 unintended acceleration complaints over the past decade, and determined that among all manufacturers, Volkswagen had the highest rate of unintended acceleration complaints in 2009 and 2008 (11.5 and 21.6 per 100,000 vehicles respectively), while Suzuki had the ...
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...
Popular Mechanics named the X platform cars on their list "10 Cars that Damaged GM's Reputation" as they "promised a revolution in how the corporation designed and built cars. unfortunately, the reality was that these four- and six-cylinder cars probably suffered more recalls and endemic problems than any other GM vehicle program." They also ...
Torsional vibration is a concern in the crankshafts of internal combustion engines because it could break the crankshaft itself; shear-off the flywheel; or cause driven belts, gears and attached components to fail, especially when the frequency of the vibration matches the torsional resonant frequency of the crankshaft. Causes of the torsional ...
An active suspension is a type of automotive suspension that uses an onboard control system to control the vertical movement of the vehicle's wheels and axles relative to the chassis or vehicle frame, rather than the conventional passive suspension that relies solely on large springs to maintain static support and dampen the vertical wheel movements caused by the road surface.
When first introduced, it was relatively rare for British cars to have independently sprung rear wheels, [1] most production cars of the time using live rear axles. Independent suspension systems offer the advantage of lower unsprung mass to improve roadholding, and when properly designed, the ability to maintain the roadwheels perpendicular to ...
The first production car to use a semi-active anti-roll bar was the 1988 Mitsubishi Mirage Cyborg. The 16-valve turbo model's "Dual Mode Suspension" has a dashboard- operated hydraulic actuator built into the front anti-roll bar link, allowing it to toggle between sport and touring modes. [5]