I have two sets of those and love them (reversible and non reversible). I use them alot on brake caliper bolts and alignment. The fit on fasteners is very good as well
That most likely means her alternator is starting to give out. For some reason nissan likes to have their cars do that. I would check the alternator output.
theres not much that goes wrong on those cars. (i work as a tech at infiniti). i would recommend replacing the drive belts to start. if that doesnt solve theproblem spray the a/c with a bit of wd-40 or triflow if the noise goes away after shooting the lube then u have a bad a/c clutch. but id...