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car runs bad, unplug Mass air meter,then runs fine ...

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Sep 14, 2006· I check under the hood and notice the mass air sensor is unplugged. I shut the car off, plugged it back in and tryed it again. Runs like crap again. So I drive halfway home, still running bad. I pull over and unplug the mass and drive it home (3 blocks, NO BOOST!!!) and it runs better than it has since i baught it (2 weeks ago) Question are:

Car Stalls After Starting, Runs When MAF Unplugged

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How to replace an automotive mass air flow sensor P0100, P0101, P0102, P0103 and P0104, though appearances may vary, the process is similar for most vehicles. 2001 Volvo Xc70 Vibration Engine Mechanical Problem 2001 Volvo Xc70 All Wheel Drive Automatic 84000 Miles Hello: I Recently Hit A Curb Pretty Hard.

Question: Better idle with Mass Airflow Sensor unplugged

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Apr 08, 2012· Better idle with Mass Airflow Sensor unplugged. This is a discussion on Better idle with Mass Airflow Sensor unplugged within the General Help forums, part of the LSx Technical Help Section category; I have been chasing down an idle problem and decided to unplug the MAF to see if it would run ...

Bad Mass Air Flow Sensor? (7 Symptoms with Fixes) | The ...

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Oct 22, 2018· 03/31/2021 10/22/2018. The symptoms of a bad mass air flow sensor include low engine power, poor fuel economy, an engine that won’t start, a check engine light on the dash and a gas smell from the exhaust fumes. A bad mass air flow sensor is often the likely culprit if your car isn’t running as it should. The job of the mass air flow sensor ...

Does mass air flow sensor need replacing if unplugged …

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Mar 18, 2018· Recommended Services. Car is hard to start Inspection. Get a Quote. John Hege. Automotive Mechanic. 40 years of experience. Just because the car shuts off when you unplug the MAF, it doesn’t mean that it is bad. But it also doesn’t mean that it is good.

Car runs with the mass airflow sensor unplugged. If you p...

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Oct 17, 2016· If you unplug the mass air flow sensor the car will start. If you try to plug it in while it''s running the car will die. My car has 90000 miles. My car has an automatic transmission. Recommended Services. Spark Plugs Replacement: : Get a Quote: Mass Airflow Sensor Replacement: :

Will driving with the MAF sensor unplugged for a few days ...

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Aug 01, 2021· Answer (1 of 3): Go right ahead. Without a MAF reading, the computer will use a preprogrammed alphan tune (alpha being throttle position, n being rpm). It will not compensate for things like altitude (which influences the air density) and possibly air temperature (se have the temp sensor integr...

Mass air connected, Car dies. Disconnected, Car runs ...

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Oct 28, 2008· I do have Cats, and i do have a smog pump hooked up to pump air into the cars (high flow x pipe). So TB, sensors, MAF its all stock. Third> I''ve hooked up the airbox, plugged in the MAF with the car off. As soon as i start the car, she''ll run then die. I then unplug the MAF with the car off, i start it and she runs good.

Why A Car Runs Better With The Mass Air Flow Sensor ...

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However, if the car dies on unplugging the mass airflow sensor, this means that either the computer or some other sensor is malfunctioning.. What Really Happens On Unplugging The Mass Air Flow Sensor. This brings us to what happens when the …

Does mass air flow sensor need replacing if unplugged and...

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Mar 18, 2018· Recommended Services. Car is hard to start Inspection. Get a Quote. John Hege. Automotive Mechanic. 40 years of experience. Just because the car shuts off when you unplug the MAF, it doesn’t mean that it is bad. But it also doesn’t mean that it is good.

SOLVED: Runs better with mass air flow sensor unplugged ...

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The mass air flow sensor is a possibility...try leaving the mass air flow sensor wire harness unplugged to see if the car runs better. If it does, probably it is bad. However, I would also check the exhaust for a restriction (eg. converter could be plugging up), one way to check that is to hook a vacuum gauge to the engine to see if you get ...

How long can I drive with MAF unplugged?

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May 14, 2020· What happens if you unplug a map sensor? Misconnecting the BARO sensor to vaccum on a Mass Air car will cause the computer to lean out the fuel mixutre. Code 22 or 126 MAP (vacuum) or BARO signal out of range. The MAP or BARO sensor is pretty much the same sensor for both Mass Air Speed Density cars.

What Happens If You Disconnect Mass Air Flow Sensor ...

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Feb 22, 2021· If the car dies when you disconnect the mass airflow sensor, then that means it was working right and that your computer has issues. It isn’t able to use the tables programmed in it to guess the amount of fuel needed. Also, if the computer isn’t the issue, then it means one of the other sensors is probably off if the car isn’t able to ...

1986 corvette starts, then dies. I unplug the MAF and runs ...

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Oct 08, 2015· When I disconnect MAF sensor, engine dies immediately. ... (Code P0449 Evaporative vent valve P0102 mass air flow sensor circuit low. I replace mass air flow sensor ad evaporative vent valve, cle ... The car will start right up and then run a few second a ...

Car doesn''t idle unless Mass Air Flow sensor is unpluged

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Dec 31, 2019· Now the car starts and revs up to 2000 2500 and dies unless you keep the revs up, but when you unplug the MAF sensor it with rev up to 1500 on start and go down and idle between 1000 and 500 for Car doesn''t idle unless Mass Air Flow sensor is unpluged

Why Would A Car Run Better With The Mass Air Flow Sensor ...

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When you Disconnect The MAF, your computer sets a value stored in your memory. Do you know Why Would A Car Run Better With The Mass Air Flow Sensor Unplugged?

maf sensor test? car still runs the same with it unplugged

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Jul 14, 2017· No. If the car runs the same with the MAF unplugged, the problem is NOT the MAF. If you unplug the MAF and things get better, the problem is with the MAF. This is because the ECU ignores the faulty MAF readings since it''s unplugged. It uses a different fuel strategy without those readings.

Answered: car dies when i unplug mass air flow sensor ...

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Apr 19, 2018· car dies when i unplug mass air flow sensor should this happen. Report. Follow. Asked by RobedSquid Apr 19, 2018 at 12:02 PM about the 1998 Toyota Corolla. Question type: Maintenance Repair.

Should my car die if I unplug the mass airflow sensor?

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Mar 02, 2020· Well, the answer to that is no. If you disconnect the mass airflow sensor, then the car should keep running and still be able to start normally. This means that if your mass airflow sensor dies completely, then your car will stay running and surprisingly the car might run better without the mass airflow sensor.

Why Would A Car Run Better With The Mass Air Flow Sensor ...

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Nov 26, 2021· After unplugging the mass airflow sensor, if your car is running more smoothly, the computer is working fine, and so do the other sensors, you can assume an issue with your MAF sensor. In another scenario, if the car dies soon after removing the MAF sensor, there’s an issue with either the computer or other sensors.

Is it true that if you unplug your MAF sensor while the ...

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Is it true that if you unplug your MAF sensor while the car is running and the car doesn''t shut off, the MAF sensor is broken? Close. 0. Posted by 2 years ago. ... the computer reverts to factory programming and imputes mass airflow based on throttle position, intake air temp and O2 sensor readings. 3. Share. Report Save.

idle misfire gone when unplug MAF Ford Ranger Forum

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Nov 26, 2012· 11252012, 09:52 AM. brc0703. Ford Pickup. Join Date: Sep 2012. Posts: 109. idle misfire gone when unplug MAF. so i have a misfire at idle and my mpg has dropped from about 1718 to 1415 for the last 2 tank fulls..when i unplug the mass air flow sensor it dissapears and idles smooth. tried driving like this but it shifted way too hard..

Changed Maf sensor now low idle and car dies runs rough ...

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Feb 27, 2018· Guy at auto parts store said no but when i unplug the MAF the car dies. Sign in to reply. pushrod on . February 28, 2018. When you disconnect ANY sensor you have automatically induced a trouble code therefore reading the trouble codes will be moot .. A professional *scan test* is highly recommended..

What happens when you unplug mass air flow sensor while ...

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Jan 30, 2021· Q: Car runs with the mass airflow sensor unplugged. If you plug it in it will die if the car is running. If you unplug the mass air flow sensor the car will start. If you try to plug it in while it’s running the car will die. My car has 90000 miles. My car has an automatic transmission.

Why does my car run better when I disconnect the maf sensor?

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Answer (1 of 6): The car runs better because it defaults to the ECU factory settings. I replaced my two clogged catalytic converters, both oxygen sensors and the maf sensor. The Toyota Tacoma ran bad with everything new hooked up, since it was running off …

Why Would a Car Run Better With the Mass Air Flow Sensor ...

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However, if you unplug the MAF sensor and the car dies, other sensors or computers have a problem and are not functioning properly. Step by Step on Unplugging the Mass AirFlow Sensor There is no switch to disable a mass airflow sensor, so unplugging is the only way to disable it.

The Symptoms of a Bad Mass Air Flow Sensor AutoZone

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The mass air flow (MAF) sensor, part of your vehicle’s electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. A faulty MAF sensor can cause your vehicle to run too rich or run too lean. You’ll notice if the tailpipes eject black smoke or when the engine runs rough or backfires.

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