Car question

[ZenGum]

Originally Posted by HungLikeJesus

We should all bet on it, and whoever is right gets to pay for the repairs.

Loose wire.

[glatt]

I took it to Track Auto or Autozone or one of those places. And they hooked it up to the code reader, and there were no codes found.
I guess that means the oxygen sensor is OK?

[tw]

Originally Posted by glatt

I guess that means the oxygen sensor is OK?

Most likely, yes. But again, described was how to make some code reported. Some codes will not be reported unless a defect is seen in multiple and consecutive restarts.

Most O2 sensor failures I have seen get reported by diagnostics long before it causes engine roughness or lower gasoline mileage. And again, gasoline mileage is an important parameter in locating these intermittent type problems. Some defects will cause mileage reduction. Others will not.

[BigV]

Originally Posted by glatt

I took it to Track Auto or Autozone or one of those places. And they hooked it up to the code reader, and there were no codes found.
I guess that means the oxygen sensor is OK?

Was it exhibiting the symptoms at the time the test was taken?

[glatt]

Yes and no. It had been rough idling moments before, but it was turned off for the code reading. Key was only turned part way and engine was not running.