Need help guys!

[JackJare9455]

Hope your cats are good.

Cats would throw a "catalytic efficiency below threshold" code...

 

[afpj]

Look at the fuse panel under the hood. Look carefully at the o2 sensor fuses. I had that happen once after replacing a o 2 sensor that was wired incorrectly from the manufacturer and it shorted out the heater circuit and blew the fuse. It was a known issue with a certain batch of denso sensors apparently, but unfortunately came from rockauto.

 

[chevync]

A&B o2 fuses are good. Putting it on lift today. I smelled a burning wire twice in two days so im hoping its just a wire.

 

[chevync]

I replaced all three oxygen sensors and it's fine now, passed emissions inspection this morning so i was able to tag it, finally! Also spoke to the original owner, he replaced the cat back in febuary. I sent him pics with the new wheels and told him everything I havge done to it he asked if he could buy it back.lol

 

[07Burb]

nice!

 

[sbubbaklein]

not plugged in?

Engine rebuild? Check to make sure they got plugged in, first.

Never know. Stranger things have happened.


did you try plugging and unplugging ? poor conection

 

[chevync]

They were bad, the original owner verified there were two sensors bad when he had it, so I replaced all three to be on the safe side.