Mar 10, 2012 · Came across this info and figured it would help some of those with throttle body and idle issues. Oct 17, 2023 · The air flow sensor, commonly referred to as the MAF (Mass Air Flow) sensor, plays a crucial role in modern automobiles. 0 mkIV (AVH). Its primary responsibility is to measure the quality of air entering the engine. Also bought fuel injector cleaner and filled up with premium fuel. Nov 22, 2023 · The MAF and MAP work together specifically in turbo applications to accurately inform the ecu to determine when the ignition (for diesels, injection timing) should occur under varying engine load conditions. Follow these steps to complete an Idle Relearn: With vehicle at a complete stop, set the parking brake. aftermarket analysis, and step-by-step replacement advice. Do you need to leave - battery unplugged for 30 mins, then let idle for 5 mins. The computer will then forget what parameters it has previously learned and adapt to the new settings. Jun 8, 2023 · Learn how to reset mass air flow sensor in no time. Learn quick signs it’s fixed, red flags to watch, and pro tips for faster ECU reset and smoother drives. Nov 10, 2025 · Hi, I’m looking for some mechanical help. or more? Or is it 6 days ago · A practical, expert-backed buying guide for MAF sensors on Ford Fiesta models—symptoms of failure, compatibility tips, OEM vs. This is where we come in with our guide to when and how to reset a mass air flow sensor. So far the MAF sensor replacement did squat. The check engine light is On The engine is hard to start. There are other things to consider. Jul 7, 2002 · C5 Tech - Idle relearn procedure. Mar 26, 2021 · Wondering what the quickest way to reset the mass airflow sensor? Damien, our Diagnostic Product Specialist from the Snap-on team, will show you how using a Nov 6, 2017 · OEM, Denso or NTK are the only sensors to use on Subaru's or any Japanese cars. He's going to do a few more relearn cycles on it. How to Relearn the Mass Air Flow (MAF) Sensor Without Scanner "Relearning" a Mass Air Flow (MAF) sensor, in the traditional sense, isn't a procedure required for the sensor itself; rather, it's May 20, 2015 · 6. A damaged or dirty mass air flow sensor will cause your engine responding slower than usual. Road Testing The Vehicle Feb 6, 2022 · What to do after replacing mass air flow sensor? The to-do list does not include proper maintenance only. Chat got with some of the thinkdiag value/ believes my maf is messing everything up. Still stalling out. This may take a few drive cycles for the ECM to fully relearn the sensor's readings. I have a 2018 Nissan Altima that’s been acting up lately. 0tdi PJ / PK Ranger owners want an actual relearn dongle, I still have one for sale in the classifieds here . 5 has been throwing this code, so far recently I've cleaned the MAF sensor, replaced the O2 sensor in the rear Exhaust manifold, and put in new plug wires (the slight miss went away after I did this) and I did spark plugs about a year or so ago (I pulled the Jun 3, 2013 · Once replaced, turn the key on for 10 seconds and then off for 30 seconds. I have my theory as to why a MAF relearn plus cleaning can have an effect overall Which is what I'm hoping to see. This will allow the PCM to relearn the positions of the new EGR Valve. When I reinstalled them both my check engine light came on when I turned the key. How long does the ecu take to relearn the maf? Do i need to disconnect the battery for a bit? Cheers chaps! :) WMT However, most of the time only by resetting the MAF sensor you can overcome the issues. . Dec 28, 2025 · Hello guys, can a worn pcv valve give these symptoms?: Oil consuption (1L/2000kms) during the last 3000kms. Code is gone; van is running great. He thought it Maf sensor re learning 2009 4x4 bt50 3. Sep 30, 2013 · Hi guys, lately my '08 Impala LT 3. Jan 5, 2021 · After TB & MAF cleaning, RPM shot up to 1800 to 2000 on idle, and gradually settled down to 900-1000 area. 9K subscribers Subscribed G35 350z How To Clean MAF (Mass Air Flow Sensor) ECU/Throttle/Idle Relearn Bad throttle position sensor symptoms – P0121 P0122 DIY - 5 Symptoms of a Failing MAF (Mass Air Flow) Sensor! We would like to show you a description here but the site won’t allow us. And I believe I recall seeing something about 30 mins. Sep 24, 2025 · After replacing the MAF sensor, it is important to disconnect the battery for about 10 to 15 minutes to ensure that the MAF sensor resets. Thought id record a video of me cleaning the MAP and MAF sensors on my car and also doing a MAF relearn. Apr 11, 2009 · I was looking in the service manual for information about the mass air flow sensor when I stumbled upon a handy procedure. Here they are. So, I did this Idle Relearn and the idle stabilized at ~700. 0l I had this posted elsewhere but photos won't upload any more. Feb 23, 2006 · I wan't to reset MAF calibration after installed halltech air intake.

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