High ltft under load

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August undefined, 2024

WebApr 10, 2024 · Once I had that the idle temperature rose to 55-69 degrees after starting the system with an open browser on the initial page. After turning it off and on again, it worked properly at a temperature of 30-45 degrees. (browser load). (the laptop was connected to the charger) Please also tell me at what temperature the fans should turn on, and ... Web1 day ago · Female javelin coach, 26, accused of having sex with a 17-year-old boy on the high school track and field team after 'texting him at 2am and inviting him to her home' - before pair 'had a 17-month ...

Long-Term & Short-Term Fuel Trim - General Technologies Corp.

WebThe LTFT stored value in memory can be reset using a bi-directional scan tool or on some vehicles by removing the battery power for 15 minutes. LTFT and STFT are percentages which represent the adjustment to the fuel injector pulse width. The LTFT and STFT are added together, so a LTFT of 10% and a STFT of -5% will equal 5%. graphing matrices calculator

positive LTFT on Idle - HPTuners

WebAug 24, 2024 · LTFT now ranges between 11% and 20% at idle. It hangs around 10% under revving and 4-7% under load; this has not changed since before the repairs that have been … WebApr 28, 2024 · Then it goes back to mostly normal LTFT under load? If so, that would most likely be a vacuum leak. The tiniest little leak on these cars (especially regarding the PCV system) will send these cars into hysterically lean idle or light cruise conditions. If it's just bad LTFT numbers all the time, then probably not a vacuum leak. WebSep 22, 2002 · Once again more air = higher LTFT’s (more fuel) = more power…very simple. It’s “calibrated” (very poor word to use) to the range of flow inherent to the displacement of the engine. The next item was the MAFT. It was never designed to … chirp sound effect

P0171 P0174 High ltft under load Help! - Ford Truck Enthusiasts …

LTFT and STFT values are off and don

WebJan 5, 2024 · Your actual fuel trim is the sum of ltft and stft, and yours are extremely high. You likely need new sensors, and you have vacuum leaks. I would not count out fuel delivery either. The first minute or so the car is in closed loop as the o2 sensors heat up, so you are not getting adaptation. Ignore the codes. WebSep 28, 2024 · New sensor begins reading much sooner, but the high fuel trims at idle persist. On the first trart after clearing the ECU: BEFORE the downstream O2 begins giving output, the truck idles like a champ; it's like a brand new engine. AFTER is when the fuel trims get out of whack and things go to heck. chirpsounds wayne frickWebAug 27, 2024 · At this point literally nothing I do seems to have any effect on fuel trims, LTFT is at 18% at idle and within +/-10% under any load at all and I can't find any components … chirp sonar vs down imaging

"WebJun 30, 2024 · LTFT was at 11.4% STFT was at 4% MAF 2.8 warm 3.8 cold changed oil, and replaced homemade CAI with stock air box and replaced in-cabin air filter STFT shot up to … " - High ltft under load

High ltft under load

SOLVED! - Higher LTFT at idle and higher at rpms

WebJul 10, 2024 · Normally, both LTFT and STFT should be close to zero. If the STFT rises higher than plus 15-20% at idle, but drops at higher rpms, most likely you have a vacuum … WebDec 4, 2024 · LTFT at 2500rpm no load, +%4. Driving under load, LTFT is at most + %2-3 O2 sensor voltage appears correct. Upstream cycles .9 to .1 volts about every 1.5 seconds. …

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WebJun 30, 2024 · LTFT was at 11.4% STFT was at 4% MAF 2.8 warm 3.8 cold changed oil, and replaced homemade CAI with stock air box and replaced in-cabin air filter STFT shot up to 27.3% and LTFT hangs out around 30% immediately after doing above maintenance. Noticed huge hole in upper air boot (I probably made it bigger, when replacing CAI with Stock) WebFeb 11, 2015 · So what I've noticed on the scan gauge is my LTFT at idle is a solid 3.9. But as soon as I push on the accelerator they jump up to 14% while the STFT is right around 0 …

WebSep 16, 2010 · Under load the LTFT values drop to between 5 and 7. I did a quick check for intake leaks by introducing propane (from an unlit torch) around the outside of the intake ducting and manifold and did not notice any change in the STFT values. I will do a detailed check of the intake sometime. Anything else I should be checking? gathermewool WebThere will be upwards of 20-30 different LTFT load cells stored for various speed and load ranges. These will change in scan data as you move the engine through its power ranges. The values will return to normal after repairs are complete. Each load cell has to be used long enough for the STFT to modify the LTFT in that cell.

WebJan 1, 2024 · Under normal operation, we expect these values to be within 10 percent of zero. While it takes LTFT in excess of plus or minus 25 percent to set a rich or lean Diagnostic Trouble Code ( DTC ) and illuminate the Malfunction Indicator Lamp (MIL), I consider anything in excess of ±10 percent to be a concern that requires investigation. WebA significant increase in STFT and LTFT can be caused by: Unmeasured air is entering the engine due to a vacuum leak (higher fuel trim at idle, but less at higher RPMs) Incorrectly …

WebJan 11, 2016 · Basically the first two lines are LTFT, next two are STFT, then oxygen wideband bank 1 and bank 2 for lambdas and last one is wideband bank 2 current. The …

WebApr 14, 2024 · The exemption permit system was introduced in 2009 under the Dispensation of Zimbabweans Project, which allowed some 250,000 Zimbabweans unlawfully in South Africa to regularise their status ... graphing mathematicsWeb2 days ago · Female javelin coach, 26, accused of having sex with a 17-year-old boy on the high school track and field team after 'texting him at 2am and inviting him to her home' - before pair 'had a 17-month ... chirp soundsWebJan 31, 2024 · Fuel pressure remains between 52-55.5 psi between Idle and under load. Vacuum leaks were checked for in the following manner. Watching LTFT and STFT and then upstream O2 sensors using propane all along each and every vacuum line as well as IMT valves and idle control valve, brake booster and EVAP canister. chirp speech pathologyWebOct 2, 2024 · 2005 BMW 325c1 with M54 engine has a high LTFT 8-12% and the fuel pressure is 48PSI which is 4psi (7.7%) below standard. Will the low fuel pressure cause high LTFT? No. Mine is 48 PSI and I have no issues. I have a 2.2L engine M54. The range of fuel rail pressures on BMW engines is from 43 PSI to 73 PSI. So there is no "standard". graphing math problemsWebNov 23, 2024 · Both LTFT and STFT can be positive (more fuel) or negative (less fuel) percentages. LTFT and STFT are added together to produce the total fuel trim, and neither should exceed ± 10% in normal operating conditions. Fuel trims (LTFT, STFT, or LTFT+STFT) exceeding ±10% may indicate a problem in the engine or the sensors. graphing mean and standard deviation in excelWebOct 17, 2024 · Thread: Help diagnose / troubleshoot '10 2.0T 2k rpm surging, High LTFT,engine brake ticking. Thread Tools. Show Printable Version; 09-12-2024 01:52 PM #1. markcm. View Profile ... the rpm will pulse by about 1-200 while holding a steady foot or using cruise control and the car is under a consistent load such as a hill climb. … chirps phoneWebDec 4, 2013 · In addition to these no-load checks, drive the vehicle at various steady load conditions and watch for fuel trim variation. If long-term fuel trim (LTFT) for bank 1 is 25% … graphing math website