Gm alcohol content relearn. How to reset fuel sensor module?

Discussion in 'animation' started by Zulkizuru , Thursday, February 24, 2022 2:59:44 AM.

  1. Dairamar

    Dairamar

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    I suppose all the other sensors must be working for this to be right. The check-engine light was not on but clearly there was over-fueling right after a cold start. There is a procedure for it. Even still, confirmation of the above behavior or explanation if it's wrong would be a huge help! We dont really have accessible e85 here anyways. You must log in or register to reply here. Big Turbo Sonic Member.
     
  2. Gozilkree

    Gozilkree

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    Apparently the alcohol percentage that the truck is reading can be reset to 0 or whatever with the right scan tool like the dealer has.The fuel pump replacement and KAM reset caused the inferred fuel reading to be accurate.
     
  3. JoJosida

    JoJosida

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    westpart.online › ask › questions.Resetting KAM will cause the PCM to initiate a relearn and infer the air-fuel ratio immediately after going into closed-loop operation.
     
  4. Tutaur

    Tutaur

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    Yes, X Pros mini Scan Tool can reset fuel trims and initiate an alcohol relearn on GM flex fuel vehicles. Any further questions, feel free to contact us.The concern would last for about 50 seconds and would occur only after a cold start.
     
  5. Mazubar

    Mazubar

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    Easy reset for the alcohol fuel trim, mine is at 75% and I never use E Stabilitrak/traction control off messages.If they're not big enough you might not be able to handle the needed Volume for flex fuel.
     
  6. Golabar

    Golabar

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    P - Check Fuel Alcohol Content. Models: Cadillac Escalade. Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe.Based on this information and the slow-switching state of the Bank 2 oxygen sensor, I contacted the customer and recommended replacement of both upstream O2 sensors and PCM reprogramming, as per the TSB.
     
  7. JoJogore

    JoJogore

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    HELP DIAG : 2009 P0172 + P0175 too rich forum? You'll need to go to a dealer and request them to perform an alcohol percentage relearn procedure with their GM tech2.New posts.
     
  8. Fauk

    Fauk

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    westpart.online › › Misc (NON CHEVELLE AUTOMOTIVE TECH).Seems like whatever is supposed to be sensing the alcohol percentage may be off.
     
  9. Tekree

    Tekree

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    When an E85 compatible vehicle is built, an ECM or PCM replaced, or if the learned alcohol content has been reset with a scan tool the fuel.The customer was now complaining of a very poor cold start and rough idle with black smoke.
     
  10. Nejora

    Nejora

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    How much am I looking to have to pay in regards to connecting a Tech2 and Fuel Trim Reset & Alcohol% Reset at the Stealership?And TSB made reference to lean codes P or P, and reminded techs to replace O2 sensors if the truck was built at the Kansas or Dearborn plants before a certain date.
     
  11. Shaktikora

    Shaktikora

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    and flex-fuel vehicles that have learned ethanol content incorrectly. A customer brought a Chevy T10 Blazer with a liter.I decided to jumper the pump at the FPM so that it stayed in high-speed mode and delivered a constant 56 psi, which was in spec.Forum Gm alcohol content relearn
     
  12. JoJotaxe

    JoJotaxe

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    The alcohol content in gas is hardly ever what the pump says it is. Why are you agonizing over it? The ethanol gets dumped into the truck at the tank farm.The Actron scanner offers lots of data but doesn't quantify any of it.
     
  13. Kigall

    Kigall

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    Iwas sure that was the issue until GM told me that it was installed This sensor measures the alcohol content of the fuel in your truck.I suppose all the other sensors must be working for this to be right.
     
  14. Juzahn

    Juzahn

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    Threw system rich DTC with 30% negative fue trim and showed 49% alcohol. Never used e Commanded fuel comp relearn and fuel trim returned to normal with.Thread: Toyota Techs.
     
  15. Vudojar

    Vudojar

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    hey there, May be a silly question, but im wondering if there is a way to use my hptuners to reset faulty ethanol content calculations?Search titles only.
     
  16. Toll

    Toll

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    Maybe during the relearn time the GM truck is trying to learn the fuel alcohol content, but it has another some other issue like some of the.I'd look into the alcohol content sensor firstForum Gm alcohol content relearn
     
  17. Grolkis

    Grolkis

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    Low fuel pressure will have the same effect on the learn process as high alcohol content in the fuel. I performed a KAM reset to return the.This truck learns alcohol content by watching fuel trim, MAF readings, and injector pulse width.
     
  18. Mazurr

    Mazurr

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    You understand GM adapts cars for many markets do you? As I said, where I live we use ethanol (pure) and gasoline (with 20% ethanol added) as.As engine control systems continue to evolve, there will be more things to keep in mind when we diagnose drivability issues.
     
  19. Bagal

    Bagal

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    While most engines are designed to require a certain fuel octane level and added ethanol content limited to 15%, the engines in flex-fuel vehicles are designed.Where I live, we have both gas and etanol.
     
  20. Mauzragore

    Mauzragore

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    I don't see a way to reset the alcohol percentage. Are my options to either find a GM scanner or go to the dealer? I put an O2 sensor in it.Many thanks!
     
  21. Mojas

    Mojas

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    forum? Will the truck run ok after you reset it for awhile? GM is back to using inline fuel alcohol content sensors.Tim B says:.
     
  22. Faesar

    Faesar

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    If indeed it was not a high alcohol content fuel but the PCM thought it was I tried a full elec reset but the alcohol value stays fixed.You understand GM adapts cars for many markets do you?
     
  23. Magul

    Magul

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    the alcohol concentration of the fuel. ➢ Ford= “deductive refueling logic”. GM= “Virtual Flex-Fuel Sensor”. ➢ learns only after KAM reset or fuel level.Thanks in advance.
     
  24. Kegami

    Kegami

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    Hi All, I recently bought a GMC Yukon XL. This is appealing because I'd be able to reset the ethanol % myself, not just read it.New posts.
     
  25. Tugrel

    Tugrel

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    Need to drive it westpart.online problem with it reading percent alcohol with regular gas in the tank is its tries to run an ethanol tune and.My snap-on scanner will complete this task.
     
  26. Mezishicage

    Mezishicage

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    It will read to high alcohol content and need to be reset. It's suppose to self adjust but we all know how “suppose” to works. GM 's are no.Go have it reset.
     
  27. Yozilkree

    Yozilkree

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    Alcohol content should not be more than 10%, more than that will cause Connect" top reported fix for p is relearn alcohol sensor.If y'all would like to talk about that as well.
     
  28. Jukinos

    Jukinos

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    When an E85 compatible vehicle is built, an ECM replaced, or if the learned alcohol content has been reset with a scan tool the fuel system.After it is verified that the fuel is ok at the fuel rail, not the tank, the a scanner is needed to reset fuel trim and reset fuel composition.
     
  29. Vudodal

    Vudodal

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    Truck is miles.
     

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