Walker 46823 Resonator And Pipe Assembly on 2040-parts.com

Car making mysterious noises? There's an app for that

You may pride yourself on your ability to diagnose a developing engine problem by sound alone, and then replicate said mystery sound, Click-and-Clack-style, to amuse/annoy your friends and coworkers. ClingClanger is a new phone app that's designed for the rest of the world -- those who can't identify piston slap by sound and are startled by the clicking caused by a dying battery. The natural impulse is to simply crank up the radio and hope the noise/problem goes away.

New Nissan Micra costs from £9,950

New Nissan Micra Facelift (pictured) costs from £9,950 Although we saw the new facelift for the Nissan Micra in the guise of the overseas Nissan March in back in March, it took Nissan until this month to reveal the new Micra for the UK, and now we’ve got specifications and prices confirmed. Starting at £9,950 for the Micra Visia, all new Micra models come with a new front and back, upgraded interior with a new centre console, better materials and more equipment. The entry-level Visia gets Bluetooth, electric front windows, remote central locking and USB, with the mid-spec Acenta (from £11,550) adding alloys, leather steering wheel, Climate and Cruise.

Chat with Web guy Dale Jewett

When news about new cars, motorsports and car collectors shows up at autoweek.com, interactive editor Dale Jewett usually plays a role. It helps that Dale has 100-octane blood (with a fondness for Chevrolet Corvettes) and enjoys most forms of racing, keeping the Web site up to date over the weekends. Or you can hear him at times during episodes of AutoWeek TV, or on the weekly AutoWeek radio show on Saturday nights.