Posted by sixbales on January 04, 2019 at 17:30:16 from (99.89.193.51):
Toyota Tacoma 2006, 160K miles. A few weeks ago, the "check engine" light came on. The code translated to “Catalyst System Efficiency Below Threshold (Bank 1)”. Usually this means your catalytic converter needs to be replaced or there is a problem with your O2 (oxygen) sensors. But this was not an O2 sensor code. A Toyota catalytic converter costs over a grand. I would change the O2 sensors before buying a catalytic converter.
As a first step, I bought a bottle of catalytic system cleaner ($25) at Auto Zone and put it the tank (1/8 gauge reading). Took the truck out on a 4-lane highway with a 75 mph speed limit, and put 32 miles on it. Erased the code and it hasn't come back on with more than 600 miles driven since, but I expect it will...just a matter of time.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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