Obi-Wan "Old Ben" Rustobi Fuel-up Log

1996 Toyota Tacoma
Property of blinker97. Added Mar 23 2012

Showing a single fuel-up

Aug 5 2017

After a highway trip there was a rattling noise coming from the underside. I could not point out specifically where the noise was coming from. The noise would get louder based on engine speed, but also when traveling over speed bumps with the engine idling. This indicated that the problem was most likely not internal to the engine, but instead something coming loose externally. After another long highway trip, the noise had changed instead to just a much louder exhaust. When I looked for the location of the issue this time, I saw that the upstream O2 sensor had come completely loose from the flange on the side of the exhaust pipe. The nuts that normally tighten the sensor to a gasket and bolts must have rusted and completely fallen off. The check engine light also came on and the exhaust is sometimes backfiring when engine braking.

• 204,700

  Odometer

Added by blinker97 on Aug 16 2017 at 8:54 am