Did you know that on engine will run with the ignition coil wired backward? It will, however, reduce spark energy and make the engine run sluggishly. So remember, unless you have on aftermarket ...

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.