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The air flow meter in a car tells the engine management computer how much air the cars engine is using. This is important because the fuel to air ratio must be maintained for proper combustion of the fuel. If there is too little fuel for the amount of air, the engine will tend to stutter misfire and accelerate poorly. If there is too much fuel for the amount of air, the engine will smoke, have poor efficiency , high emissions, and also have poor performance. When the computer in in "closed loop" operation, it calculates how much fuel to deliver based on the measurement received from the air flow meter. The computer is smart and many can calculate what the air flow is supposed to be without the air flow meter being hooked up. The engine rpm, manifold pressure and temperature can be used to get a very close estimate of the air flow at the lower engine rpm range. Sometimes the computer operates in "open loop" and does such calculation. Open loop takes place in some cars when the car just starts and is warming up, or if there is a problem with some part of the system, so you can still operate the vehicle. The oxygen sensor on a car is also used while in the closed loop mode to assist in determining how much fuel to inject. The injectors control the fuel by opening and closing very fast, the longer the injector is open, the more fuel. Fuel pressure upstream of the injector is held constant, in that way the fuel delivered is directly proportion to the amount of time that the injector is open.
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If the air flow meter goes does it affect the performance of your car?
yes it would become very slugish..
Large air intake hose from the Air Flow Meter 1995 Mazda 626?
Hi buddy! when I was searching air flow meter for my Mazda car I came across AutoSparePartsUsa.com.check it out.http://www.autosparepartsusa.com/Getproduct.aspx?modelid=17628&partid=240509&catname=Air~Intake~Hose
Why does my car lack power going up hills and steep climbs?
hi, it could be your air flow meter / air flow sensor if it's a late model car same problem happened to me in my 96 landcruiser.
What will happen if you disconnect your ai flow meter?
The air entering the system will be unmetered, allowing the car to run poorly if at all.
What are the effects of a faulty air flow meter in efi vehicle?
A faulty air flow meter in a electronic fuel injection vehicle will lead to drivability issues. The car will not be able to send prop fuel and air mixtures to the ECU which will lead to issues starting the vehicle as well as maintain a solid idle.
How can you determine a faulty air flow meter on 2001ford mondeo?
if the car is running rough whilst idleing or running, simply unplg the airflow meter and test drive the car. if the airflow meter is buggered- whilst it is unplugged it should run fine
What causes car to idle up and down when in park and then cuts off?
It is difficult to diagnose a problem like this via the internet, but it could be the air flow meter. A faulty air flow meter will often cause this type of symptom. Its a good place to begin the process of elimination, at least
How do you clean air flow mass meter?
1 Remove the upper casing of your mass air flow meter by prying the lock tab up and off the plastic housing or removing the bolts that hold the housing in place. Consult your vehicle's manual for the exact location of your meter and the type of housing it has to know if you will need to use a socket set to remove the housing.2 Lift the mass air flow meter up and out of its compartment. Be very careful not to touch the wiring that is on the meter, a slight touch can ruin the connection and you will have to replace the entire meter.3 Attach the red straw that came with your CRC Mass Air Flow Cleaner Spray to the spray nozzle by simply pushing it into the nozzle opening.4 Hold the can so the end of the spray straw is a minimum of 5 inches away from the mass air flow meter and spray the cleaner onto the meter. Rotate the meter in your hand as you spray and make sure you coat every portion of the mass air flow meter.5 Set the meter on a clean surface and let it air dry for 15 minutes. Re-install the clean mass air flow meter into your car............ nick ..uk...
Purpose of an air flow sensor in Toyota Echo?
The purpose of an air flow sensor in ANY car is to measure the air coming into the intake of the engine and communicate this to the ECU (engine control unit) so the EFI (electronic fuel injection) knows how much fuel to deliver to the combustion chamber.
Where is the air intake hose on a 1992 Mazda MX3 car?
hi i think the air intake hose is connected to the mass aif flow meter located some where by exaust i think
Rev counter bounces when car is not in motion?
Your air mass flow meter may need replacing. The way to test is to open the bonnet then start the car. After you have started it pull the plug from the air mass flow meter. This is a plug connected up to the air intake of the engine, just after the air filter, and before the engine. If as soon as you pull it out the rev counter settles (the engine will revert to a default setting once it loses the output from the air mass flow meter) then you should have the air mass flow meter changed at the eariest oppourtinity. They cost about £100, and you would be much better off getting it done by a small private company so Audi don't rip you off. My Audi mechanic friend tells me its a common problem with these cars and Audi will charge £350 for the job.
Can the air mass flow meter stall car?
Most cars will not operate without their airflow meters. For example, Holden Commodore (Alloytech engine) You remove the connector to the airflow meter when car is running, engine shutsdown and will produce extensive error codes.
