Hi All, Iâ€™m new to Isuzuâ€™s and new to the site. I just purchased my first Isuzu Trooper yesterday (1999, V6, 4WD). I bought it knowing it had an issue with itâ€¦hoping it is what the computer says it is. The check engine light was on and the truck is making a rumbling noise and shakes a bit when driving. The computer initially gave a Bank 2 O2 sensor error and a Camshaft sensor error. I drove it a few miles to the gas station because the oil was non existent. I added the oil and hooked the computer up again. I only got a Camshaft sensor error. I drove it home 20miles and hooked it up again and got only the Camshaft sensor error again. So, my question isâ€¦..do I need to replace the O2 sensor and the Camshaft sensor? If the Camshaft sensor was really bad would the truck still run at all or could that actually be the cause of the rumbling? I really appreciate any help youâ€™re willing to give. Thanks.