Question about 1999 Ford Windstar

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Oxygen sensors how do i replace the heated oxygen sensor and the mass air flow sensor

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  • 90 Answers

Please what is your engine size 3.0l or 3.8l

Posted on May 05, 2014

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6ya6ya
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Posted on Jan 02, 2017

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tripletauto
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SOURCE: Mass Air Flow Sensor, oxygen sensor and coil plugs

look for vacuum leaks the last 4 codes are lean codes
primarily lookm at the pcv hose noturious for collapsing

Posted on Sep 16, 2008

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

  • 532 Answers

SOURCE: runs rough when cruising at 35-40 mph

try pulling off the air breather hose and look inside at the mass air flow sensor,it looks like a wire with a diode hooked to it incase you didnt know,see if there is any fuzz on it,sometimes the air filter will lose small pieces and the mass air flow sensor catches it.If that doesnt work then you may have a fuel problem,weak pressure,causing the mass air flow sensor to read too much air so it tricks the computer to adjust the issue.

Posted on May 21, 2009

  • 147 Answers

SOURCE: Repalced O2 sensors, mass air flow sensor, and plugs error messag

dpfe velve

small emissions valve with one electrical connnector and three to four vacume lines located near your egr valve. this is a comon fault on fords emmissions system.

Posted on Aug 15, 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

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03 Nissan Altima showing codes P0304,P0102,P0154,P0113 what are they and how do i repair the problems.


Hi Chris.

p0304 = Number 4 Cylinder Misfire Detected

Faulty spark plug 4
Clogged or faulty fuel injector 4
Faulty ignition coil 4
Fuel injector 4 harness is open or shorted
Fuel injector 4 circuit poor electrical connection
Ignition coil 4 harness is open or shorted
Ignition coil 4 circuit poor electrical connection
Insufficient cylinder 4 compression
Incorrect fuel pressure
Intake air leak

The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 4.


p0102 = Mass or Volume Air Flow Circuit Low Input

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.


p0154 = O2 Sensor Circuit No Activity Detected Sensor 1 Bank 2

Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem.


p0113 = Intake Air Temperature Sensor Circuit High

Faulty Intake Air Temperature (IAT) sensor
Dirty air filter
Intake Air Temperature (IAT) sensor harness is open or shorted
Intake Air Temperature (IAT) sensor circuit poor electrical connection

The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. The sensor detects intake air temperature and transmits a signal to the Engine Control Module (ECM).The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise. The Intake Air Temperature signal is used as an input for various systems in the vehicle.



Hope this helps
FYT

http://www.autocodes.com/make/nissan

Mar 26, 2017 | Nissan Cars & Trucks

1 Answer

P0421 code


"FWIW, according to the Mazda factory service manual, the P0421 code indicates "Warm up catalyst system efficiency below threshold".

The DETECTION CONDITION for this code indicates "Number of heated oxygen sensor (rear) inversion becomes closer to that of heated oxygen sensor (front)".

POSSIBLE CAUSES are:

Warm up three way catalytic converter deterioration
Leakage exhaust system
Heated oxygen sensor (front) malfunction
Heated oxygen sensor (rear) malfunction
Mass air flow sensor malfunction
Throttle position sensor malfunction
Vehicle speed sensor malfunction"
I copied the above from a discussion group on the PO421 code. The code can be caused by any of the above listed problems. The vehicle should be further inspected and diagnosed, so you do not have components replaced that do not need to be replaced.

Apr 16, 2014 | 1998 Mazda 626

1 Answer

Scanned my computer , came up with a PO 171 and 174 what does this mean?


P0171 AND P0174
P0171 - System Too Engine Cylinder Lean Bank 1xicon.jpghttp://engine-codes.com/p0171.htmlForum CodePossible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes Dirty air filter of faulty air flow sensor are common causes for the P0171 code of the problem.


P0174 FORD - Fuel Injection System Too Lean Bank 2xicon.jpghttp://engine-codes.com/p0174_ford.htmlForum CodePossible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes The codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. On Ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem.

Jul 27, 2012 | Cars & Trucks

1 Answer

2006 Ford Taurus code P0152


Common Problems That Trigger the P0152 Code
  • Defective Oxygen Sensor
  • Faulty Oxygen Sensor wiring or connections
  • Shorted Oxygen Sensor Heater element(s)
Common Misdiagnoses
  • Oxygen Sensor is replaced when the problem is faulty Oxygen Sensor wiring or connections
  • Oxygen Sensor is replaced when the problem is an over-reporting Mass Air Flow Sensor, clean mass air flow sensor first, to see if thats the problem. good-day ! just type this in search on pc. 02 sensor symtoms, and it will give you the details of a bad sensor.

Apr 27, 2012 | 2006 Ford Taurus

2 Answers

What are codes p0101 & p1153


  • P0101 - Mass Air Flow (MAF) Sensor Performance
  • P1153 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 2 Sensor 1
  • Mar 20, 2011 | 2003 Chevrolet S-10

    2 Answers

    What does error code p0172 and p0174?


    P0172 - Fuel Injection System Too Rich Bank 1 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
    - Excessive Fuel Consumption
    Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connec
    Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.



    P0174 - Fuel Injection System Too Lean Bank 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
    - Excessive Fuel Consumption
    Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection
    Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem. Bottom line possible defective Mass airflow sensor and or O2 sensor in cylinder bank number two.

    Feb 21, 2011 | 1998 Ford Expedition

    1 Answer

    I have a 04 expedition the engine light came on the code read po171 and po174 it die out when I'm at a red light but cranks back up missing bad when it warms up


    P0171 - Fuel Injection System Too Lean Bank 1
    Possible Causes:
    - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection

    P0174 - Fuel Injection System Too Lean Bank 2
    Possible Causes:
    - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection

    Jan 14, 2011 | 1998 Ford Expedition

    1 Answer

    What cause the bank1 and 2 too lean


    P0174 - Fuel Injection System Too Lean Bank 2 Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem. P0171 - Fuel Injection System Too Lean Bank 1 Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.

    Jan 11, 2011 | 1998 Chevrolet S-10 Pickup

    1 Answer

    OBDII SETS CODES P0401, P0171 & P0174 . 1998 Mercury Sable


    P0401- Exhaust Gas Recirculation Flow Insufficient Dectected
    Possible causes - Harness or connectors (EGR volume control valve circuit is open or shorted.)
    - EGR volume control valve stuck closed
    - EGR volume control solenoid valve
    - Dead (Weak) battery
    - EGR passage clogged
    - Exhaust gas leaks Possible solution - Clean EGR Valve
    - Repair EGR harness or connector
    - Replaced EGR volume control solenoid valve
    - Replaced EGR volume control valve
    Code P0171- Fuel Injection System Too Lean Bank 1 Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem P0174- Fuel Injection System Too Lean Bank 2 Possible causes - Intake air leaks
    - Front Heated oxygen sensor may be faulty
    - Injectors may be faulty
    - Exhaust gas leaks
    - Incorrect fuel pressure
    - Lack of fuel
    - Mass air flow sensor may be faulty
    - Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.

    Jun 28, 2010 | 1998 Mercury Sable

    1 Answer

    I need a diagram of the exhaust system on a Mazda 626


    0996b43f80203328.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2000 MPV

    1 PCM 2 Mass air flow (MAF)/intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Fuel tank pressure sensor 5 Engine coolant temperature (ECT) sensor 6 Crankshaft position (CKP) sensor 7 Camshaft position (CMP) sensor 8 Knock sensor 9 Heated oxygen sensor (HO2S) (front, LH) 10 Heated oxygen sensor (HO2S) (front, RH) 11 Heated oxygen sensor (HO2S) (rear, LH) 12 Heated oxygen sensor (HO2S) (rear, RH) 13 EGR boost sensor 14 Power steering pressure (PSP) switch 15 Main relay


    0996b43f8020330c.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart-2001 MPV

    1 PCM 2 Mass air flow (MAF)/Intake air temperature (IAT) sensor 3 Throttle position (TP) sensor 4 Engine coolant temperature (ECT) sensor 5 Crankshaft position (CKP) sensor 6 Camshaft position (CMP) sensor 7 Knock sensor 8 Heated oxygen sensor (HO2S) (front, LH) 9 Heated oxygen sensor (HO2S) (front, RH) 10 Heated oxygen sensor (HO2S) (rear, LH)* 11 Heated oxygen sensor (HO2S) (rear, RH)* 12 EGR boost sensor


    0996b43f8020330f.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Component Location Chart- 2002-06 MPV

    May 22, 2010 | 2004 Mazda MPV

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