Rich fuel trim at idle
WebbAt both idle and 2500 RPM, after engine warm up, the post-cat short fuel trim is hovering about 50%. The post-cat o2 sensor switches with a lot less of a voltage difference than … Webb23 nov. 2024 · If a Long-Term Fuel Trim get too large (±25%), the PCM/ECM will trigger a “MIL” warning, and set one or more Data Troubles Codes (DTC) to help diagnose the …
Rich fuel trim at idle
Did you know?
Webb15 sep. 2024 · What’s a Normal Long-Term Fuel Trim? Normal long-term fuel trim is a measure of how much fuel the engine is receiving compared to what it needs. It’s … Webbless than 8% = rich The negative multiplicative fuel trim reading of -4.48% means it is rich and subtracting fuel at part throttle. Additive Mixture Adaptation (idle, lower rpm) Measurements: ms or mg/stroke; greater than 0.2ms = LEAN, adding fuel; less than -0.2ms = RICH, subtracting fuel; The .68 mg/stroke means it is adding fuel at idle. GM
http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info Webbidle speed performance lower than expected: p0507: idle speed performance higher than expected: p0508: idle air control valve sense circuit low: ... downstream fuel trim system 1 rich: p2098: downstream fuel trim system 2 lean: p2099: downstream fuel trim system 2 rich: p2100: electronic throttle control motor circuit:
http://mallcrawlin.com/forum/showthread.php?25173-Rich-mixture-at-idle-SOLVED!!! Webb4 dec. 2013 · Fuel trim should be checked at idle, at 1,500 rpm and at 2,500 rpm. In addition to these no-load checks, drive the vehicle at various steady load conditions and …
WebbPOSITIVE fuel trim values mean the engine computer is adding fuel (increasing the pulse width or on-time of the fuel injectors) to add more fuel to the engine. In other words, it is attempting to RICHEN the fuel …
Webb14 feb. 2024 · When a car is running rich, it means the engine is injecting too much fuel and too little air for perfect combustion, a rich air-fuel … javascript pptx to htmlWebb25 aug. 2024 · 2003 c3 1.4i 8v bva, has a PCV valve ? I replaced most parts. I checked. The car goes into a rich mixture and idle fluctuates when the engine is warm. So if it is necessary to check the PCV valve I want to replace it. Could the oil be in the steam ho.. javascript progress bar animationWebb20 dec. 2024 · 2004 - 2008 F150 - 5.4 Running Very Lean On Bank 1 and Rich On Bank 2 - I'm looking at a 2004 Expedition 5.4. It is running super lean on bank 1 (right bank). Fuel … javascript programs in javatpointWebb16 dec. 2024 · Hey Guys, Looking for some advise please. My 2011 Roc 2.0 TFSi seems to be over-fueling on idle and under vacuum, when I get off the gas pedal. I had a look at … javascript programsWebb18 mars 2024 · Instead, look for -25% or higher negative fuel trims on one bank. Due to high negative fuel trims, a leaking fuel injector will reduce average fuel injector pulse … javascript print object as jsonWebb26 aug. 2016 · At idle, short term fuel trim was negative, and on throttle, it went positive, to throw more fuel into cylinders. I installed brand new plugs about a month ago, and they were all sooted up already. With poor gas mileage, and funky exhaust smell, the car was definitely running rich, even though long term fuel trims were running positive)computer … javascript projects for portfolio redditWebbDriveability. 2003 Nissan Xterra SE 3.3L (VG33E) 4-spd — 5N1ED28Y33C677221. There is a new mass-air sensor, a new distributor and a new EGR valve (old one was leaking). Timing belt is good and the marks line up. Has good fuel pressure and injectors are working properly. Does not lose spark or injector pulse. javascript powerpoint