How To Read And What Does It Mean?

[Tonyrodz]

How do I decipher this? I put this on the How while driving. It's streaming live data, but I don't know if it's good or bad? @swathdiver have a clue? Any and all help how to read this is much appreciated. Gotta know what the Hoe is up to

 

[Tonyrodz]

Last one.

 

[PNWMuseumman]

 

[swathdiver]

It looks good but some things are best tested at idle or to graph while driving. I'm sure the O2 sensors were moving up and down, graphing the upstream sensors will show you their health. Trims look fine as does vacuum. Having said that, I'm not a tuner, just spent a lot of nights at the Holiday Inn Express!

 

[Tonyrodz]

It looks good but some things are best tested at idle or to graph while driving. I'm sure the O2 sensors were moving up and down, graphing the upstream sensors will show you their health. Trims look fine as does vacuum. Having said that, I'm not a tuner, just spent a lot of nights at the Holiday Inn Express!

Thx James. Just trying to learn how to read this stuff. Got the scanner for Xmas and it's a great tool, but just can't figure out how to use it. I took the pics while driving. I know absolutely nothing about long term or short term fuel trims or Hg--I'm lost lol.

 

[swathdiver]

Thx James. Just trying to learn how to read this stuff. Got the scanner for Xmas and it's a great tool, but just can't figure out how to use it. I took the pics while driving. I know absolutely nothing about long term or short term fuel trims or Hg--I'm lost lol.

The closer the Trims are to zero the better. If you find them high in the negatives at idle and then coming down that is usually indicative of a vacuum leak, and specifically the intake gaskets.

As with your Buick, vacuum at idle should be around 18-22 depending on the camshaft and as load increases on the engine it gets closer to zero.

 

[Tonyrodz]

The closer the Trims are to zero the better. If you find them high in the negatives at idle and then coming down that is usually indicative of a vacuum leak, and specifically the intake gaskets.

As with your Buick, vacuum at idle should be around 18-22 depending on the camshaft and as load increases on the engine it gets closer to zero.

That does help.