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Old 09-02-2015, 09:03 PM   #26
steve99
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Quote:
Originally Posted by J-W View Post
That's what I have and what I've been using to pull codes. Not really sure where sensors should be reading at what point, but at idle, it seems like engine load is ridiculously high.
At idle engine load should be arround 0.3
afr generally arround 14.7 once warmed up at idle
ltft will vary a bit depending on intake air temps fuel ethhanol percent ect but should be less than 10% usually arround +\-5% in most cases ,if long termm fuel trim is high like 15 to 20% usually an indication something is wrong

short term fuel trim will vary widly with throttle application this is normal

commanded afr and afr should follow each other under load

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