Ford Mustang Forum - View Single Post - Air/fuel ratio spiking in a new Mustang, sometimes losing power.
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post #1 of (permalink) Old 02-04-2013 Thread Starter
antoniogm
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Air/fuel ratio spiking in a new Mustang, sometimes losing power.

This is the air/fuel ratio on a 2013 Mustang GT with about 600 miles on it, under moderate load (upshifting through the gears while coming to speed on the highway).

Its been giving me trouble in that the ratio will shoot up, causing the check engine light to blink and engine to lose power.

That did not happen in the period depicted here. Nonetheless, this seems way too volatile for me. Can anyone tell me how normal this is?

Even if this data looks OK, can anyone share any experiences with the problem described above of high AFR/power loss randomly happening in a practically new car?

I'll try and get a sample when the engine starts losing power and will post when/if I have it.



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