Lexus RX 300 - Recent Questions, Troubleshooting & Support - Page 5
My lexus Rx 300 jeep is consuming excessive fuel.
Has the system been tested for fault code? Do you have a check engine light on? Are the tires inflated to the correct air pressure? Do you jack rabbit away from stops? Is the engine in a good state of tune and all maintenance performed as needed?
This a picture of the freeze frame for my 99 lexus Rx 300. I would like to know what it means and are these normal parameters?
Yes, looks normal, and good. Calculated load is not much meaning, as it changes constantly. ECT of, oh that is centigrade, not sure how that translates to Fahrenheit, but it may be low from not running long...
Your fuel trims (both short term and long term-STFT, LTFT) are very good-showing that fuel is not being added or subtracted by the computer to maintain correct air/fuel ratio. Fuel trim numbers should be close to zero. It is when fuel trim changes by double digits-either positive or negative-that there is an indicated problem. For example, say you had a vacuum hose leak- sucking in extra air to the engine- then you could see STFT number go positive by double digits-meaning the computer senses a lean condition and is adding fuel to compensate. But your fuel trims show the air/fuel ratio must be correct-no change in fuel trims-the positive 2.3 in LTFT is negligible- not a problem.
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