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Air flow rate from mass air flow sensor 0.01 lbs/s

I have load air flow rate from mass air flow sensor of 0.01 lbs/s with idle is correct?

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Posted on Jan 02, 2017

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SOURCE: car will not start when

hi there, when air flow unplugged, ecu goes into limp home mode ,a back up if something dies whilst driving. it sounds as if your used mass air flow sensor is faulty , they are more fragile than they look, one knock and these early fine wire models are gone. i replaced many when i worked at a volvo dealership a few years ago. hope this helps, and good luck.

Posted on Aug 11, 2008

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StormStrikes
  • 104 Answers

SOURCE: Emmission codes, Mass air flow sensor

The P0101 code is indeed a code indicating an issue with the MAF sensor. It could be something as simple as cleaning the sensor, or it could be faulty and in need of replacement.

Now, the P1870 code refers to the transmission, and a condition in which the PCM is detecting excessive slipping. That is to say it perceives the transmission slipping as it compares engine speed (RPM) and vehicle speed (MPH) and should a ratio be exceeded then the PCM will set code P1870. I would expect that you would notice a bit harsher shifting in response to this code, particularly on the 1-2 shift as the PCM will command higher fluid pressure to combat the slipping.

Now, it is possible that the an issue with the MAF would cause signals to the PCM to change significantly and to such an extent that the PCM would think something is off with the transmission, so I would start there, with the MAF sensor and see if that helps as it appears you were already thinking.

Posted on Jan 02, 2009

  • 39 Answers

SOURCE: mass air flow sensor bad on 2002 monte carlo ss

It's should be a simple remove and replace. Just make sure the engine is off. Also do not touch any of the filament wires on the sensor, just the plastic housing. Also after you install it drive the car for a little while (city speeds, cruising speeds and inbetween). That way the computer will be able to readjust its setting since it is a new sensor.

Posted on Apr 02, 2009

blueextc3221
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SOURCE: location of mass air flow sensor

The sensor is mounted on the throttle body between the air cleaner assembly and the air cleaner outlet tube.

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Posted on Sep 04, 2009

  • 617 Answers

SOURCE: Location of mass air flow sensor, 2000 Grand Prix GTP

3.1 or 3.8 motor, mass air flow is in the fresh air (goes from air cleaner to engine)

Posted on Feb 07, 2010

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What is a maf sensor


A mass (air) flow sensor (MAF) is used to find out the mass flowrate of air entering a fuel-injected internal combustion engine.
The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature, altitude and the use of forced induction, which means that mass flow sensors are more appropriate than volumetric flow sensors for determining the quantity of intake air in each cylinder. (See stoichiometry and ideal gas law.)
There are two common types of mass airflow sensors in use on automotive engines. These are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with additional sensors and inputs, an engine's ECU can determine the mass flowrate of intake air.
Both approaches are used almost exclusively on electronic fuel injection (EFI) engines. Both sensor designs output a 0.0-5.0 volt or a pulse-width modulation (PWM) signal that is proportional to the air mass flow rate, and both sensors have an intake air temperature (IAT) sensor incorporated into their housings for most post OBDII vehicles. Vehicles prior to 1996 could have MAF without an IAT. An example is 1994 Infiniti Q45.
When a MAF sensor is used in conjunction with an oxygen sensor, the engine's air/fuel ratio can be controlled very accurately. The MAF sensor provides the open-loop controller predicted air flow information (the measured air flow) to the ECU, and the oxygen sensor provides closed-loop feedback in order to make minor corrections to the predicted air mass.

Aug 03, 2015 | Cars & Trucks

2 Answers

What is the fuel flow rate for a nissan altima 2001


Have to look up the specs

In general you need about 16 oz (Volume) in 15 to 20 seconds

Nov 30, 2014 | 2001 Nissan Altima

1 Answer

2003 Grand Am Has P0102


It is not an ECM/PCM problem.
P0102 - Mass or Volume Air Flow Circuit Low Input
Possible causes- Faulty mass air flow sensor
- Dirty mass air flow sensor
- Dirty air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks Tech notes Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with low compress air or mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor

Sep 27, 2012 | 2003 Pontiac Grand Am

1 Answer

C220-manual transmission. erratic idling and sometimes idles up and down. Has been serviced and throttle body cleaned but still does this. Happens more often when the engine is warm.


according to your information it's faulty mass air flow sensor, check mass air flow sensor first, when the Idle rough just disconnect the air flow sensor wiring socket if it's better than when it's connected it's faulty air flow sensor, mass air flow sensor have fitted between air cleaner housing and throttle body, you can see wiring connector been connect on it you have to turn it anticlockwise and remove it. when you fix it back do the reverse order, if it's faulty replace air flow sensor. is this information helped you?

Oct 31, 2010 | 1994 Mercedes-Benz C-Class

1 Answer

My 2005 Sante Fe hesitates and won't get up to speed whenever it is damp or rainy outside. What causes this? Thanks


It could be your MAF (Mass Air Flow) sensor. Do you have any SEL {Service Engine) light coming on?

A mass air flow sensor is used to find out the mass of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature, altitude and use of a turbocharger and this is an ideal application for a mass sensor. (See stoichiometry and ideal gas law.)
There are two common types of mass airflow sensors in usage on automotive engines. These are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with an additional sensor or two, the engine's air mass flow rate can be accurately determined.
Both approaches are used almost exclusively on electronic fuel injection (EFI) engines. Both sensor designs output a 0.0- 5.0 volt or a pulse-width modulation (PWM) signal that is proportional to the air mass flow rate, and both sensors have an intake air temperature (IAT) sensor incorporated into their housings.
When a MAF is used in conjunction with an oxygen sensor, the engine's air/fuel ratio can be controlled very accurately. The MAF sensor provides the open-loop predicted air flow information (the measured air flow) to the ECU, and the oxygen sensor provides closed-loop feedback in order to make minor corrections to the predicted air mass.

May 27, 2010 | 2006 Hyundai Santa Fe

2 Answers

Where is the map sensor located and how do I install it in a 1992


  1. Disconnect the negative battery cable.
  2. Remove the air cleaner outlet tube by loosening the retaining clamps, then tag and disconnect any hoses or tubes.
  3. Disengage the engine control sensor wiring connector from the mass air flow sensor.
  4. Remove the four retaining bolts, then carefully remove the sensor from the vehicle.
  5. Discard the mass air flow gasket.
To install:
  1. Position the mass air flow sensor with a new gasket onto the air cleaner cover.
  2. Install the four retaining bolts, then tighten them to 25 inch lbs. (3 Nm).
  3. Install the air cleaner outlet tube by aligning the white identification mark on the tube with the tube stop on the throttle body, then tighten the retaining clamps to 24-48 inch lbs. (2.7-5.4 Nm).
  4. Engage the engine control sensor wiring connector to the mass air flow sensor.
  5. Connect the negative battery cable, then start the engine and check for vacuum leaks.
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Nov 13, 2009 | 1992 Ford Taurus

2 Answers

MAAS AIR SENSOR


A mass air flow sensor is used to find out the mass of air entering a fuel-injected engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density varies with the ambient temperature and altitude, and this is an ideal application for a mass sensor. (See stoichiometry and ideal gas law.)
There are two common types of mass airflow sensors in usage on gasoline engines. These are the vane meter and the hot wire. Neither design employs technology that measures air mass directly. However, with an additional sensor or two, the engine's air mass flow rate can be accurately determined.
Both approaches are used almost exclusively on electronic fuel injection (EFI) engines. Both sensor designs output a 0 - 5.0 volt or a PWM signal that is proportional to the air mass flow rate, and both sensors have an intake air temperature (IAT) sensor incorporated into their housings.

Nov 09, 2009 | 1999 Oldsmobile Silhouette

1 Answer

'89 buick regal replaced ECM, 02sens, IAC, MAP sens and throttle position sens and still idles fine but boggs and dies when I touch the gas!!!! PLEASE HELP!!!


have you tested the fuel pressure . should be about 35 lbs while idling and theres also the maf sensor mass air flow

Jun 12, 2009 | 1989 Buick Regal

4 Answers

Getting a code reading saying MAF or VAF circuit Low Imput. Need to know where to Start.


First thing to try - open your hood and look near your air filter. In between your air filter and your engine there will be a few electrical plugs. One will be your VAF or MAF (Mass Airflow Sensor). Check to make sure that the electrical plugs are on good. Don't be afraid to give them a little pull, and push them on tightly. If this does not fix it, check out the video below. It's for a Jeep, but your car may be a similar procedure. It tells you how to clean the sensor. I put some more technical information about how a MAF sensor works below, in case you are interested. Warning - technical information ahead! The mass air flow (MAF) sensor is an air flow meter that measures the amount of air entering the engine. The powertrain control module (PCM) uses the MAF sensor frequency signal in order to provide the correct fuel delivery for a wide range of engine speeds and loads. A small quantity of air entering the engine indicates a deceleration or idle. A large quantity of air entering the engine indicates an acceleration or high load condition. The MAF sensor has an ignition 1 voltage circuit, a ground circuit and a signal circuit. The PCM applies a voltage to the sensor on the signal circuit. The sensor uses the voltage in order to produce a frequency based on inlet air flow through the sensor bore. The frequency varies within a range of around 2,000 Hertz at idle to about 10,000 Hertz at maximum engine load. DTC P0103 sets if the PCM detects a frequency signal higher than the possible range of a properly operating MAF sensor. car dud

Jun 05, 2009 | 1999 Pontiac Grand Prix

1 Answer

Engine misfires under load when warmed up. Replaced all six injectors and problem persists. Tach and speedometer both go gonzo when accelerating/rounding curves. Lowell, MN


check the mass air flow sensor, does it idle back and forth between 500-1000 rpms? if yes mass air flow sensor is the problem.

Apr 07, 2009 | 2002 Pontiac Grand Prix

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