Understanding fuel trims some more
Data Logs, Fuel Trim? | SaabCentral Forums
Does anyone understand Fuel Trim readings? I ... I have noticed that the initial cold start takes a few more cranks than a hot/warm start.
What do you guys think about my fuel trims? - Toyota Nation Forum
If the fuel trims are normal at idle and increase with RPM, it is often clogged injectors, or a fuel delivery problem. If fuel trims are offset, ...
Fuel trim - Snap-on Diagnostics Product Forums
If some of the Euro guys chime in I'm sure they could tell you more. I would bet the adaption 24% is your long-term fuel trim. High fuel adapt ( ...
Engine pinging. Fuel trims and more…. - EricTheCarGuy
– Close to zero, or +/- 3 fuel trims when driving. – STFT are high on the negative side, usually – 17 to -25 when I put the car on park and try ...
Fuel trims for dummies | Kia Stinger Forum
A fuel trim value of 50 indicates tha the ECU is throwing 34% more fuel than the maps expected into the engine. If they are JB4 trims (or some ...
Some high long term fuel trim question - RX8Club.com
An LTFT of +15% means vacuum leak! Both LTFT and STFT will read zero when in open loop. Brettus's Avatar.
Fuel trims what makes them max out at idle? - Club VR-4 Forums
when STFT climbs higher and high the LTFT will increase a bit to say 0.4 So as the LTFT has add more fuel to the required level the STFT does not have to add ...
Fuel trim question - Diagnostic Network
Question: if fuel trim is +25% is the engine running rich or lean ChatGPT Answer: If fuel trim is +25%, the engine is running lean. Fuel trim is a measure of ...
Understanding Fuel Trims | Audi-Sport.net
Therefore creating a RICH condition as far as the O2 Sensor reads. So basically with all codes reset the O2 Sensor initially detects a lean ...
Fuel Trim Data- What it means | BimmerFest BMW Forum
Short Term Fuel Trim (STFT1 and STFT2) is the computer's immediate response to adjust the air/fuel ratio. In positive corrections, fuel is added ...
How to read short and long term fuel trims - YouTube
How to read short and long term fuel trims. 192K views · 8 years ago ...more ... Understanding the basics about fuel trims. Hands On Auto Training ...
Fuel trims - Ecoboost Performance Forum
The STFT are used to just make small adjustments to the air fuel ratio in real time. The tune calls for more fuel which tends to make them ...
E36 M3 (S52) Fuel Trim Fault Bank 1 ONLY
On startup, the fuel trim will be at exactly 0%. Long Term Bank 1 trim will also be 0%, while the Bank 2 fuel trim (long and short term) move ...
Fuel trims - Honda Odyssey Forum
Fuel trims that are higher at idle than at higher RPM's usually indicates a vacuum leak. The intake tubes are common failure and leak points.
2001 Silverado Lean fuel trims
+ or - is not necessarily indicative of a problem. + means the O2 reported a lean condition and thus the PCM added fuel to bring A/F into the ...
Would appreciate some help interpreting my fuel trims - M5Board
From plugging in the old mafs and the code they gave it is clear they are bad. They will have changed all sorts of adaptions. Time and miles ...
Watching Fuel Trim | Team Integra Forums
Short term trim is always changing as the ECU hunts for a perfect mixture. If the short term trim is consistently <-10% (rich) or > +10% (lean) ...
long term fuel trim question | Chevrolet Cruze Forums
I is my understanding that fuel trim should be 0 in the long term ... thanks guys for the help, if there is a need for more information or exact ...
Short Term Fuel Trim Question - Honda Civic Forum
Okay got some more graphs/readings from under the conditions you asked about. STFT Idle in Park is reading in range of -1.49% -0.69% -2.29%
Trying to understand fuel trim from rich running | SEATCUPRA.NET
High fuel trim numbers can also be caused by a vacuum leak. The upstream sensor sees too much oxygen in the exhaust and it cranks up the fuel to compensate.