Air Fuel gauge reading?

[Kong76]

Noticed during a punch on the gas my gauge reads 8-9 and when I let off it pegs at 22. Seems really off and rich. Also anything above 3500 rpm i get this severe buzzing sensation through the clutch when depressed to change gears. Feels like something is not lubricated or balanced. The shifter sounds like its got a metallic buzz along with it. Dealer said no problem found. I have never raced,launched,line locked the car. Been driving manuals for 21 years.

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[Lime1GT]

If you're talking the vacuum gauge, vacuum will be low at open throttle and high when throttle plate is closed. http://www.secondchancegarage.com/public/186.cfm
It is not telling the fuel ratio.

 

[dot]

EB here, but mine holds rock solid and steady at 11.9 AFR at WOT. From what I've read, the numbers should be very similar on the GT and shouldn't be much lower than 11.8-12.

22+ AFR is from the fuel injectors turning off because you're decelerating while the engine is still spinning above a certain rpm (somewhere around ~1300 minimum in the Mustang).

You should probably see a different dealer. Those issues sound unacceptable.

 

[GT Pony]

I've seen A/F down around 10:1 on my stock GT.

http://www.mustang6g.com/forums/showthread.php?t=49259

 

[Kong76]

If you're talking the vacuum gauge, vacuum will be low at open throttle and high when throttle plate is closed. http://www.secondchancegarage.com/public/186.cfm
It is not telling the fuel ratio.

I took another look at the gauge mode and it does say air/fuel ratio. What ever it was seemed to work itself out. Back to normal for now.

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