The guy at the muffler place says I have a cracked exhaust manifold. He also says he can’t get the parts until after Thanksgiving - in fact, until Dec 3, because Dec 2 is the opening day of the PA hunting season, which is, apparently, an undeclared holiday. I’m supposed to drive, with my family to Virginia for Thanksgiving. The muffler guy says that should be fine - highway driving will generate enough airflow to keep us from all dying of CO asphyxiation.
I have two questions. 1) Am I putting my life and the life of my family at risk by taking this car on the road?
2) The shop has quoted a very high figure to repair the problem, with a slightly smaller price if they can salvage the O2 sensor. Some internet shopping suggests that the prices quoted are on the high side, especially for the O2 sensor - how much should a forward O2 sensor for a Toyota Matrix cost?