How can I get LTFT info w/o a scan tool?

[calvarycoffee]

My scan tool (innova

Topic

[Heath Knox]

The only way is with live data. Sorry.

[johnzcarz]

I don’t think you can do it that way. Even if you got the pulse width/duty cycle, what would you compare it to? When the computer does it it’s tracking/calculating that against what the factory thinks is correct and adjusting that value to keep STFT close to 0. Seems unlikely it would be easy to do that.

[John B Kobberstad]

Quoted From calvarycoffee:

My scan tool (innova 3140) cannot get live data for my vehicles (95 Escort, 93 K1500, and 91 Taurus). I’m not able to pull up LTFT.

I do have a DMM (Fluke 88V) that can measure pulse width, freq,, and duty cycle.

Is it possible to backprobe an injector and do some calculations for my LTFT?

Am I way off on this? any tips or other suggestions are very much appreciated. 🙂

See if this is what you are looking for http://ackthud.com/shawnfogg/mixture.htm

[dreamer2355]

You have posted your question in the wrong section as this is the “How To” section –

Post your step by step repairs, tips, tricks, and ‘how to’ information here.

[Author]

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