Hi new to the forum but it looks like you guys might be of help. I just purchased a 2002 Beetle for my daughter, only 81,000 miles. I drove it home ran flawless. Later in the day a check engine light showed up Auto Zone scanner says o2 sensor 1 bank 1. Later in the day we noticed the gas gauge stopped working reads empty but I'm sure it has gas. The next thing that happens is a loud pop now the car won't idle but I can keep it running by holding my foot on the gas. I'm sure this is probally more than one issue. Any ideas?