Q. I have a 2009 Chevy Cobalt. The car was running but had some fault codes, one being a faulty ignition switch. I replaced the switch and did a key relearn, and now the car will not crank or start.

We may receive a commission on purchases made from links. A car is an intricate assembly of tens of thousands of parts, from tiny screws and washers to a sometimes massive engine block that can weigh ...

Just like spark plugs, ignition coils can wear down and become faulty over time. There are many common signs that an ignition coil is getting bad, but one obvious sign is an engine misfire, typically ...