Question about 2001 Ford Windstar

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Check engine light comes on and code says it is a fuel air mixture problem

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  • Anonymous Aug 20, 2008

    check engine light comes on and engine idles rough lack of power, until speeds above 30 to 35 miles per hour

  • patcalling Aug 23, 2008

    rough idle ,backfire,bad gas miliage

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2 Answers

Gey red of the car

Posted on Aug 13, 2008

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My 2001 Ford Windstar blows smoke and heavy drops of oil out the exaust, and usually only does it when it is cold and you first start it. The oil level in the crank case runs all out in two days and have to add four quarts of oil. What do you think the problem is?

Posted on Aug 07, 2008

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Code P0171


P0171 - System Too Lean Bank 1 Share
1 ' Add Comment Possible 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
What does this mean? Tech notes
If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.
What does this mean? When is the code detected?
- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.)
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P0171 Description
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the Malfunction Indicator Light (MIL) (2 trip detection logic).
Read more: http://www.autocodes.com/p0171.html#ixzz3t65yA9xI

Dec 01, 2015 | 2004 Nissan Titan

1 Answer

What is the code 171 mean on my dodge ram 1500


P0171 Chrysler - Fuel System Lean

Possible 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
If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replaced the air filter and clean the air flow meter. If the problem persist the front oxygen (O2) sensor may need to be replaced.

When is the code detected?
- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.)

Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption


P0171 Chrysler Description
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the Malfunction Indicator Light (MIL) (2 trip detection logic).




P0171 Chrysler Fuel System 1 1 Lean

Sep 04, 2014 | Cars & Trucks

1 Answer

What is code p017.2 for a 2002 dodge caravan


This is the closest I've come to the code you are looking for. I searched all Dodge codes and didn't see any with a "point 2" but I found code P0172. According to EngineCodes.com your fuel mixture is probably too rich. This is what the site had to say:

Possible Causes for this Code:
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Faulty Mass Air Flow (MAF) sensor
Read more: http://engine-codes.com/p0172_dodge.html#ixzz35waCcFhN

This code is detected when:
- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.)

Read more: http://engine-codes.com/p0172_dodge.html#ixzz35waXE700

Possible symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
Read more: http://engine-codes.com/p0172_dodge.html#ixzz35waruoIU


P0172 Dodge Code Description:

With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The Engine Control Module (ECM) calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.
In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the ECM judges the condition as the fuel injection system malfunction and light up the MIL (2 trip detection logic).
Read more: http://engine-codes.com/p0172_dodge.html#ixzz35wbfFdyj


Hope this helps!

Jun 27, 2014 | 1999 Dodge Grand Caravan

1 Answer

How do you know if you need an oxgen sensor for a Nissan Xterra


The onboard computer maintains an air/fuel mixture at 14.7 to 1, if one of the oxygen sensors is failing it will change the air/fuel mixture for engine combustion. When this happens the onboard computer detects that the air/fuel mixture is out of range and sets the "check engine light" to come on, on the dash. When the computer is scanned for fault codes it will relay back information as to the cause of the problem. If an oxygen sensor is detected as operating out of its range, a specific code number is displayed through testing equipment that reads 'fault codes' and it will display which one is faulting. Hope this helps.

Apr 16, 2014 | Cars & Trucks

1 Answer

Check engine code p105 for 200 MB e430


That code is the MAP sensor. It is on the air intake and it regulates the engine fuel mixture based on the barometric pressure. I have seen small animals get in those and ruin them.

Dec 09, 2013 | 2003 Toyota Matrix

1 Answer

Down to the final OB code on my truck...Po174


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.

It's a very common problem for the Ford Windstar. Here a link to a web site with information how to repair:
When is the code detected?- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.) Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel ConsumptionP0174 FORD Description The Powertrain Control Module (PCM) monitors the engine Air/Fuel mixture ratio, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The PCM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the PCM judges the condition as the fuel injection system malfunction and light up the engine light.

Oct 08, 2012 | Cars & Trucks

1 Answer

Check engine light code p1133 on a chevy colorado 2005


The code means the ECM doesn't like the exhaust mixture coming thru the cat.
It could mean one of the O2 sensors has failed, but could also be caused by a list of other problems with the fuel-air mixture.
If the ECM can't adjust the fuel trim to keep in the range, the cat could be damaged and fail inspection, so the ECM turns the light on and goes into safe mode until the problem is fixed.

Jun 24, 2012 | Chevrolet Colorado Cars & Trucks

1 Answer

I have a code reader and the code is P0171 P0174 System too lean. what makes the system too lean?


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

What Causes These Codes: Fuel injection system does not operate properly. The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.) The Powertrain Control Module (PCM) monitors the engine Air/Fuel mixture ratio, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The PCM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the PCM judges the condition as the fuel injection system malfunction and light up the engine light. 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.

Jan 16, 2011 | 2000 Ford Explorer

1 Answer

Diagnostic warning light.....diagnostic done at kia dealer... no obvious but told it might be mixture problem as they had seen same before. Any ideas?


Hi.

Mixture problems can be caused by a number of factors and faults. A computer module, the PCM, determines the mixture using data from different sensors. Re-circulated gas is also used to determine the mixture.

If the problem only happened at cold, then check the MAF (mass air flow) and (IAT intake air temperature) sensor, and also have the vacuum system tested for leaks, hat can affect the mixture and make a difference, particularly when idling.


If the problem reported by the error code was mixture related, then a common cause is often the EGR valve, that regulates gas re-circulation. In this case the engine will be running rough at idle and when driving.


More problems that can return mixture related codes can concern:
Fuel injector problems (voltage , leaking injector, dirty injector). In that case more codes may be returned. Excessive or insufficient fuel pressure due to fuel lines, pump problem, or bad fuel pressure regulator. Gas recovery system, vacuum leaks and EGR valve. Air leaks from air intake mainfold (after sensor), or defective MAF, IAT. If sensors are faulty, then you will get more codes. If the car recently runt out of fuel, or if the fuel cap is defective you can also get an error related to mixture. Exhaust leaks before reaching the O2 sensors. Timing problem.


If the only problem was a mixture related problem, then wait to see if the code comes back. The engine warning light will turn on. In that case check for additional codes and report the code here.

Things are different if there are more codes. Also there are differences if the mixture is too rich or poor.


Regards.

Feb 04, 2010 | 2004 Kia Rio

1 Answer

Check engine light air Fuel mixture


When it comes on again let a regular shop scan it for you with a good scanner so they can see whats going on. a generic code reader wont do it. if it is stored in memory they can still check it. if the truck runs good idles fine just watch out for anything out of the norm , what about air filter and fuel filter have they been changed ? tune up ? air filters should be changed every 2 to 3 oil changes and fuel filter every 30k depending on fuel quality there. and tune up at 60 to 70 k even though they probaly said 100k.

Jun 02, 2009 | 2006 Chevrolet Trailblazer

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