I'm reaching out to the community in hopes of getting some insight and guidance on diagnosing problems with my Ford's engine. I've been experiencing some unusual issues with my vehicle, specifically a rough idling problem that seems to be linked to a faulty oxygen sensor. The symptoms started about 500 miles ago, where I noticed my engine was consuming more fuel than usual. At first, I thought it might just be a result of the new driving habits I've been trying out, but as time went on, the issue persisted and became more pronounced. Now, whenever I'm at idle or cruising at low speeds, the engine starts to vibrate and make strange noises. I've done some basic troubleshooting, checking for any loose connections and ensuring that all fluids are at the recommended levels. However, I'm still stumped as to what could be causing this problem. Has anyone else out there experienced something similar with their Ford? Do you have any tips or advice on how to diagnose and possibly fix the issue?