Question about 1999 Ford Expedition

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System adative fuel too lean bank 1 and 2 1999 ford expedition when driving try to give gas it chooke back fire in air intake

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Sounds like a vaccum leak or air intake leak. Check all hoses for cracks,cuts,ect. Also check all hose clamps. If this helps great if not I might have a few other simple things to share with you. Get back to me

Posted on Sep 13, 2010

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Posted on Jan 02, 2017

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CARMD READOUTS ON MY 2006 FORD FREESTYLE CODES # PO 174,171,401,457, ALSO P2104,111,112,218 WHAT'S WRONG WITH MY FORD?


P0174: Fuel Injection System Too Lean Bank 2 http://www.autocodes.com/p0174_ford.html

P0171: Fuel Injection System Too Lean Bank 1 http://www.autocodes.com/p0171_ford.html

P0401: Exhaust Gas Recirculation Flow Insufficient Detectedhttp://www.autocodes.com/p0401_ford.html

P0457: EVAP Control System Leak Detected Fuel Filler Cap Loose/Off P0457 Ford EVAP Control System Leak Detected Fuel Filler Cap Loose Off

P2104: Throttle Actuator Control System Forced Idle http://www.autocodes.com/p2104_ford.html

P0111: Intake Air Temperature Sensor 1 Circuit Range/Performance Problem http://www.autocodes.com/p0111_ford.html

P0112: Intake Air Temperature Sensor Circuit Low Input
http://www.autocodes.com/p0112_ford.html

P0218: Transmission Fluid Temperature Over Temperature Condition http://www.autocodes.com/p0218_ford.html

Dec 07, 2016 | 2006 Ford Freestyle

1 Answer

Po171 2003 ford transit


p0171 is the code for system too lean bank 1. possible causes intake/exhaust leak--air system maf/vaf sensor-fuel pressure--manifold regulator/ pump--injectors Ho2s Check for leaking rubber hoses. Have a fuel pressure test done and replace the sensor.

Mar 06, 2013 | 2003 Ford Expedition

1 Answer

My 2000 Ford Expedition 5.4L V8 4x4 idles really bad when stopped at a red light. Sometimes it will just stall. It always starts back up. It goes just fine when I hit the gas, real smooth and powerful. It...


Check the idle fuel pressure. Load the electrical with headlights and heater defrost etc and see if problem gets worse. Attempt again with all accessories off. Could be fuel pump is getting low voltage at idle or fuel pump is failing. Bad fuel pump would definitely be a problem high fuel demand. Check vacuum line between pressure regulator to intake manifold.

Check for a air leak in the intake manifold. Gasket/hose etc. The P0171/P0174 is an indication that not enough fuel or tow much air. You can sometimes hear the air leak during idle.


Best solution is to use a graphic capable scan tool and watch the fueling trim/idle.


scan-tool-software-graph-a-rikgbt5tk1ywbo1m3dxzkw2o-3-0.gif

Mar 04, 2017 | 2000 Ford Expedition

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

HOW TO FIX CODES 171 AND 174


fault code p0171 is system too lean bank 1.................. intake/exhaust leak. air system MAF/VAF sensor. Fuel pressure/pump , injectors HOS2.

fault code p0174 is system too lean bank 2...................intake exhaust leak, fuel pressure/pump , injector(s) Air system, Hose connectors

hope this helps you

Jan 07, 2012 | 1999 Ford Ranger SuperCab

1 Answer

Getting 171 174 on 1997 expedition found fuel filter clogged installed new one vehicle accelerates better but studders while driving


Trouble code P0171 means: Fuel System Too Lean (Cylinder Bank 1)

Trouble code P0174 means: Fuel System Too Lean (Cylinder 2 bank

Mar 15, 2011 | 1997 Ford Expedition

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 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

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

2 Answers

4 codes P0171,P0174,P2195,P2197


Hi
171 system too lean
174 system too lean
2195 - 02 ozygen sensor signal stuck lean Bank1 Sensor 1
2197- 02 ozygen sensor signal stuck lean Bank 2
Sensor 1
The 2 front 02 sensors are located on the front of
the exhaust manifold.
Should solve problem and increase gas mileage.

Apr 01, 2009 | 2003 Ford Expedition

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