Webb25 feb. 2024 · The engine starts and runs well. The short term fuel trim was oscillating between - 0.5% to - 2.0% and + 0.6% to + 2.0% fairly quickly so that was satisfactory. The long term fuel trim was set at + 12.3% and I could not get it to change to a lower setting by accelerating the engine. Webb6 jan. 2015 · you've definitely got a leak, probably intake gaskets. anything over 5% on long term will throw codes. You should be less than 1%, but you probably have a tune so that may change the "normal" for your car. anything over 1% on an mct car will cause the transmission to shudder badly, but your's is the old tq converter so you wont notice that.
how to read 02 sensors, short and long term fuel trims - YouTube
Webb1 jan. 2024 · The long-term and short-term fuel trims trend nice and smooth between -2 and 8 long term and -8 and 7 short term. The oxygen sensor has gone back to … WebbBaselining the fuel trim data is a simple four-step diagnostic process: 1. Connect an OBD II generic scan tool, preferably with recording capabilities. 2. Monitor and record the fuel trim values in the four common … doj housing discrimination
Long-Term & Short-Term Fuel Trim - General …
WebbIf you see a positive fuel trim (either short or long), the ECM has decided the engine was lacking fuel based on readings from the front (pre-catalytic converter) oxygen sensor, … Webb6 apr. 2024 · Looking at and understanding what the live data is showing can help give a direction. I suggest looking especially at short/long fuel trims and O2 sensor readings. I know you said somebody looked at it but it still sort of sounds like a small vacuum leak. Short term fuel trim can help point to possible vacuum or fuel delivery troubles. Webb14 juni 2016 · Long term + short term fuel trims right now are really high. 25+%, so a rough correction should get them at least in the ballpark. You have to look at both long and short term if they are both active, which they are on your logs should i just leave it in maf mode or use mixed. doj honors program acceptance rate