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Where is Mass Air Flow Sensor on 2003 Mustang

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

autodr
  • 260 Answers

SOURCE: Cleaning the Mass Air Flow Sensor

i will try to help. 171/174 indicates lean condition in engine. the mass air flow sensor is located in the rubber tube going to throttlebody. you can try to clean it. using mild carb cleaner safe for sensors, remove sensor from tube. spray clean the tiny wires located in the cylinder. do not touch them, they are very delicate. these engines are also notorious for leaking intake gaskets and faulty pcv valves. these will all set these 2 codes. feel free with anymore questions.

Posted on Nov 15, 2008

Molson02536
  • 3854 Answers

SOURCE: PO174 HOW TO CLEAR THE CODE

Okay so the more oxygen in the exhaust (lean condition) the lower the voltage from the O2 sensor and the more fuel the computer calls for. Then the oxygen content in the exhaust drops (because it is being used up in the combustion process), and the voltage increases (rich condition) and the process repeats, for as long as the car is running, hundreds of times a minute. A gasoline internal combustion engine needs oxygen to burn the fuel. If the mixture is ideal (or 14.7:1) then all of the oxygen is consumed as the fuel is burned. The exact amount of fuel needed to produce a 14.7:1 air/fuel ratio varies with barometric pressure (altitude), relative humidity and fuel quality and condition; thus the need for oxygen sensors.

So knowing all of this what should we check when we have those pesky rich or lean codes? The most common issues for lean codes are:

1. Vacuum leaks - check for failed or loose vacuum lines, leaking intake gaskets, intake air tubes loose or any other source of un-metered air leaks (leaks after the Mass Air Flow Sensor) 
2. Restricted fuel filter or bent/pinched fuel system lines 
3. Incorrect input from other sensors, such as the Mass Air Flow Sensor, which may not always drop a separate code 
4. Engine misfire – Yes I know this one may seem weird. You might think that if there is a misfire then you will have all that unburned fuel and it should read rich; right? Well the O2 sensors read only oxygen content in the exhaust, so if you have all that unburned fuel from incomplete combustion then, you guessed it, you also have all that unburned oxygen. High O2 content in exhaust equals a lean reading!

There are also some other possibilities such as an internally leaking EGR system, (but this will typically set a separate code). A leak in the exhaust system before the O2 sensor will also cause incorrect readings. And always check for after- market modifications. These can throw a wrench into the works! The only other possibilities (however unlikely), are wiring issues, computer concerns or a bad O2 sensor!

P0174 is a Lean condition on the side of the engine where cylinder # 2 is. Good luck and hope this helps.

Posted on May 01, 2009

mcgyver468
  • 710 Answers

SOURCE: 2001 ford mustang service engine light on

IT ALMOST SOUNDS LIKE YOU MAY HAVE A VACUUM LEAK SOMEWHERE. USE A LENGTH OF RUBBER HOSE AND HOLD IT UP TO YOUR EAR TO PIN-POINT THE LOCATION OF A VACUUM LEAK. HOPE THIS HELPS. LET ME KNOW PLEASE. THANK YOU IN ADVANCE FOR AN HONEST RATING AND THANKS FOR USING FIX-YA. P.S. EGR VALVE IS VACUUM ACTUATED

Posted on May 07, 2009

blueextc3221
  • 15935 Answers

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

  • 274 Answers

SOURCE: My 1998 ford mustang v6 3.8l .. is hard to start

So what you saying is it's hard to start cold right? Something in computer system not allowing excess fuel to injectors when cold. Probably sensor Get auto electrician to sort it out otherwise you end up replacing things that there is nothing wrong with They got the right gear

Posted on Jan 27, 2010

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3 Answers

2003 Nissan Altima 2.5L Service Engine Soon Light is on, Auto Zone says codes are for MAF and O2 Sensors. Car hard to start after driving a while but when starts appears to run smooth. Auto Zone thi


ok lets start with the codes they say your getting. P??? which 1's and how many. there are few o2 sensors, are they next to the Exhaust next to the converter? MASS AIR FLOW -MAF use this, for now i am guessing, until i see the correct codes your are getting. this could be the 1 you may have below, please read it........
  • P0103
    Mass Air Flow Sensor Circuit High Input
  • Possible causes
  • Faulty mass air flow sensor
    - Intake air leaks
    - Dirty mass air flow sensor
    - Dirty mass air filter
    - Mass air flow sensor harness is open or shorted
    - Mass air flow sensor circuit poor electrical connection
  • 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.
  • possible symptoms Engine Light ON (or Service Engine Soon Warning Light)
    - Engine stall
    - Engine running rough
    - Excessive fuel consumption
    - Excessive smoke
  • the code is generated when An excessively high voltage from the sensor is sent to Engine Control Module (ECM).
2003 NISSAN Altima Sedan OBDII Codes List

Oct 22, 2014 | 2003 Nissan Altima

2 Answers

P0101 code


Get a new mass air flow sensor. They are around 100-200 bucks.

Apr 18, 2014 | 2004 Ford Mustang

1 Answer

How to clean the MAF sensor on a 2006 mustang gt?


Clean it with spray (Auto zone or any auto parts store)mass air flow cleaner do not use the mass air flow sensor on car until dry give it 30 minutes. check google plenty of videos showing how to remove and replace maf

Feb 14, 2013 | Ford Mustang Cars & Trucks

1 Answer

Would a problem be caused to use a 2003 Suzuki Esteem Mass Air Flow Sensor on a 2002 since it seems to be working great


They have to be exactly the same part electrically,etc

No way to know that unless the part number & application is the same

Your cars pcm won't have proper air flow readings if you don't
have the correct sensor

Are they the same,Don't know,that is up to you to research

Dec 17, 2012 | Cars & Trucks

1 Answer

Where are the O2 sensors? I found one directly behing the spark plugs on the back.


The O2 sensor (2 on V engines) are in the exhaust system pipes before the catalytic converter, the next sensor is the efficiency monitor for the catalytic converter system it looks like a O2 sensor but performs a much different function as far as testing goes. The codes you have follow.

P0420 - Catalyst System Efficiency Below Threshold Bank 1
What does this mean? In most cases it means the catalytic converter is worn out and that is sensed by the catalyst monitor I spoke of earlier.

P0102 - Mass or Volume Air Flow Circuit Low Input
Faulty mass air flow sensor
- Dirty mass air flow sensor (located in the air intake hose to the engine from the air cleaner)
- Dirty air filter
- Mass air flow sensor harness is open or shorted
- Mass air flow sensor electrical circuit poor connection
- Intake air leaks

Nov 02, 2012 | 2003 Buick LeSabre

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

2 Answers

1991 Ford Mustang 5.0 L HO, had been setting up for 10 yrs. cranked & ran good a few trips around the block, and then stopped idleing or running smooth under 2,000 RPM. Could it be the Mass Air censor?


Mass air flow would probably shut you down. You could clean Mass Air Flow Sensor and see what happens.Try scanning for codes then looking for vacuum leaks. Use a propane tank with a gauged nozzle to help look for vacuum leaks.

Aug 16, 2010 | 1991 Ford Mustang

2 Answers

Car is going into Failsafe.


Mass air flow sensor is located on the air intake plentium. Can't miss it. ,

May 11, 2010 | 2003 Lincoln LS

1 Answer

2001 mustang gt 4.6 liter, will only start if I remove the vacuum hose to the front of the throttle body and cover with my thumb, then I have to remove immediatley and put the hose back on. Then I have to...


rap on to the mass air flow sensor and see if the idle chages. if it does its bad. Use a block of wood such as a foot long 2x4 it works great for this test

Jan 17, 2010 | 2001 Ford Mustang

1 Answer

How do I install a mass air flow sensoe for my


just undo the hose claps on the air cleaner snorkle pull the connection for the mass air flow sensor and go backwards to install

Paul
www.carburetorexchange.com

Sep 02, 2009 | 2003 Chevrolet Tahoe

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