Air/Fuel Ration when coasting. - Mustang Evolution

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Old 12-19-2015, 05:02 PM   #1
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Air/Fuel Ration when coasting.

So I accidentally hit the rev limiter for probably a good 2 or 3 seconds today, and of course I'm now paranoid that a hurt something. So I switched over to my gauge mode and noticed the air fuel fluctuating around 13-14 but when I let off the throttle and coast it jumps up to 20. It may have alway done that but I never payed any attention so I was just wandering what others experience.

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Old 12-19-2015, 05:37 PM   #2
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I think I noticed that on mine as well.

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Old 12-19-2015, 06:18 PM   #3
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Same here, goes to 20 when coasting, fluctuates throughout the RPM range.
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Old 12-19-2015, 06:19 PM   #4
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That's the point of the rev limiter. Your fine.


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Old 12-19-2015, 07:27 PM   #5
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Quote:
Originally Posted by Mcturd81 View Post
That's the point of the rev limiter. Your fine.


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Old 12-19-2015, 07:28 PM   #6
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That's the point of the rev limiter. Your fine.


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Old 12-19-2015, 10:32 PM   #7
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The deceleration function basically stops the gas flow. ..
yes 20 is right, it's part of the program.

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Old 12-19-2015, 11:11 PM   #8
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I went and drove my car to check. Anywhere from 2.5-15 with the pedal down depending on how far down it is, 20 when coasting.


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Old 12-20-2015, 09:49 AM   #9
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Coasting the engine is just an air pump so 20 is normal. Steady cruising 14 high 13 is also normal.

Wide open throttle is where you want to be in the lower 12's -11's. WOT is where you are worried about running lean.
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Old 12-20-2015, 11:11 PM   #10
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Cool. Thank you all


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