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If one of our tools fails during normal use, Product size: 60 * 74cm; (1cm = 0. incineration for heat, power or fuel production. A project on Wastes from industries are normally homogeneous. materials having a incineration alternative, there is a negative sign on the district heating revenue. for different units should trim down the number of employees needed for each unit.

On to Figure 3. If all is functioning properly, the long-term fuel trim is balanced and adjusted correctly. Short-term fuel trim happens with the oxygen in the exhaust changes. This trim is monitored by the upstream exhaust sensor. When the exhaust passes the sensor, the ECU quickly adjusts the balance of the air and fuel. LTFT (long term fuel trim) should not change instantly, it is a learned response that happens over time.

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But once I add a bit of gas, it quickly turned into a -3%. Does this look normal and do I have a vacuum leak?

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Long-term fuel trim - a percentage of fuel change that effects the large portions of the map. Short-term fuel trim - a percentage of fuel change that effects the current cel of the map you are in.

A negative fuel trim percentage indicates a taking away of fuel while a positive percentage indicates an adding of fuel. A normal long-term fuel trim reading will appear to stay the same, giving a If long-term fuel trim (LTFT) for bank 1 is 25% at idle, but corrects to 4% at 1,500 and 2,500 rpm, focus on factors that cause a lean condition at idle, such as a vacuum leak. If the condition exists in all rpm ranges, the cause is more likely a fuel supply issue caused by low fuel pressure, a restricted injector or a defective sensor input Fuel mass = Air mass x (short-term fuel trim x long-term fuel trim) divided by (equivalence ratio x 14.64) Understanding these terms and their relationship will help you understand how to use fuel trim data shown on a scan tool. Equivalence ratio.
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How to read short and long term fuel trims. Watch later.
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2011-10-02 · Engine code p0171 p0174 Long term fuel trim at idle only is 25% when you hit the gas pedal is go down to normal but as soon you let go the gas pedal is go back to 25 running too lean%. Today when I first started up the engine you could hear like a noise coming from the air filter, so what i did was hit the gas the noise went away the engine shake a little for 1-5 sec then it went back to Short-term fuel trim (STFT) and long-term fuel trim (LTFT) are expressed as a percentage, and the ideal range should be within 65%. Positive fuel trim percentages indicate that the powertrain control module (PCM) is attempting to richen the fuel mixture, to compensate for a perceived lean condition. Long Term Fuel Trim (LT TRIM) Long term fuel trim is a learned air fuel mixture correction.

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This happens when you tune a car incompletely. 2017-05-18 · The long term fuel trim is in green and has learned a value of +2%.

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Truck has a rough idle.

On to Figure 3. Two From the Toyota repair manual: "If the total of the short-term fuel trim value and long-term fuel trim value is between +33 % and -30 % (engine coolant temperature is more than 75C (167F)), the system is functioning normally." A positive fuel trim value means that the system is being made lean by the trim value. #6 Patrick Wong, Oct 26, 2014 Long Term Fuel Trim (LT TRIM) Long term fuel trim is a learned air fuel mixture correction. This adjustment allows you to see how much of a correction was made to the mixture.