I know ... its aftermarket cover... ( previous owner ) but....

Shouldnt my ... rpms be little higher
My oil always have pressure?
and is that a bad a/f ratio to be at idle?

http://www.youtube.com/watch?v=AVAOkSVBAV4

 

There's no way that tach gauge face matches the OEM gauge underneath. The engine won't idle at 400 RPM; it will stall.

Your oil pressure sender is disconnected, or the gauge/sender are broken.

11 AFR is normal if the engine is cold, but on the rich side if warm (which your car appeared to be). My S4 idles at 12-13 AFR warm. IIRC you have an S5, which has no variable resistor to adjust idle mixture. If it's a smooth idle, don't worry about it.

 

Im confused with the numbers some say low numbers = lean and some say high numbers are lean... which is it... final and all.


I am going to see soon if the stock guages cover is behind it... i hope so.

As for the OIL ... its only when I am driving it sits at 30.... then back down when I let off... How could i fix something like that?

 

The AFR gauge shows you how much AIR is going in for 1 amount of fuel.
So 1part fuel and 11part air is rich AFR
And 1part fuel and 13part air is leaner AFR since it has more air for the same amount of fuel

Should be understandable now for everybody right?

IvarR

 

stoich is 14.7 ...your baseline

 

oil sending unit broken air fuel is ok

 

Explain

 

Well heh....60psi on compression check... fml streetport time!

 

I wouldn't pu too much stock in the AF unless you have a wideband O2 sensor. The stock ones are only good for a very narrow range.

 

^ That's an AEM UEGO wideband gauge in the video.