Question about 2002 Ford Taurus

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2002 ford taurus with check engine code bank 1 and 2 lean. the car idles irratically and stalls.

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You most likely have a big vacuum leak. PCV hose split or a bad Idle Air Control motor (IAC)

Posted on Sep 27, 2009

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2 Answers

What does code p1131 mean on a 2001 ford taurus


P1131 Ford
P1131 Ford - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 1

Repair Importance Level: 3/3

Repair Difficulty Level: 2/3

http://engine-codes.com/p1131_ford.html

Forum Code

Possible causes

- Faulty Oxygen Sensor

- Vacuum leak affecting bank 1 only

- Fuel injector problem bank 1

- Check for cylinder misfire on bank 1

- Engine mechanical condition

Tech notes

Though the Oxygen (O2) sensor, the Engine Control Module (ECM) has detected a lean system, which means that there is either not enough fuel or and excessive amount of air in the system. Start by checking for vacuum leaks.

When is the code detected?

The Engine Control Module (ECM) detected bank 1 oxygen (O2) at its lean limit

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

P1131 Ford Description

A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.

Read more: http://engine-codes.com/p1131_ford.html#ixzz3izk89wMu

Aug 16, 2015 | Ford Cars & Trucks

1 Answer

Engine misfire first 1000 rpm, engine flooding out, check engine light is on but flashes when in motion, scanner shows system too lean bank 1 and 2. shows multiple cylinder fault codes.. (FORD F-150...


my 2002 ford f150 4.2 would not hold idle so we changed the fuel pump and fuel filter and relay now the truck starts holds idle runs good at low rpm but when i stomp it it runs then stalls and picks up again.

Dec 05, 2010 | 2002 Ford F150 Regular Cab

1 Answer

I have a 4 liter V6 2003 Ford Explorer ( 2 door). The check engine came on and then it started idling rough. When it idles rough the AC blows hot. Recently it has started stalling when idling at a...


Hello! Most probable cause is a leak in the vacuum line or broken elbow connection to the Positive Crankcase Ventilation (PCV) valve...Check PCV and its vacuum line...Send results...

Guru..............saailer

Aug 27, 2010 | 2003 Ford Explorer

1 Answer

1998 FORD CONTOUR CHECK ENGINE CODES P1131 AND PO171. REPLACED 1 OF THE OXYGEN SENSORS, CHANGED PLUGS, PLUG WIRES, OIL AND FILTER, ALSO REPLACED AIR FILTER AND CLEANED PCV FILTER, RESET PC AND IT RAN GOOD...


sounds like EGR valve and sensor this controls idle speed when at a stop. the po171 is a burn lean or rich code need to know what bank 1 or 2. also check for a vacuum leak from one of the hoses.

Aug 07, 2010 | 1998 Ford Contour

3 Answers

Getting a code of misfire on cylinder 2, Bank 1 and lean code


Have you tried replacing the throttle positioning sensor?

Nov 09, 2009 | 2001 Ford Taurus

2 Answers

2003 Ford Taurus stalls at idle


go to autozone.com and register for free. You will then have a full free online repair manual with step-by-step directions, diagrams, troubleshooting, testing, replacing, and more. As an automechanic myself, this a wonderful site.

Jul 09, 2009 | 2003 Ford Taurus

2 Answers

My 2002 Ford Taurus will shutter and die when running the air conditioner and sitting idle at a stop sign or stop light. When I turn on the air conditioner the rpms will fluctuate up high above 2 and then...


the idle air control valve is responsible for engine idle.
this is a common failure on ford's. but I don't think yours is bad because it does idle high befor it dies.
you stated you had codes p0171 and p0174 these are lean codes for bank one and two, you said you found a vacuum leak and repaired it, the vacuum leak was mostly likely the cause of the lean codes, however the pcm has calibrated the fueling stategy for this lean mixture, what you need to do is erase the KAM "keep alive memory" this is done by unhooking the negative battery cable for 60 seconds, this is the only way to erase the KAM the $6000.00 machine I use wont even do it.

once the KAM is clean the computer will go into a relearn state and all operating values will be adjusted for the vehicles current condition, during this relearn session the vehicle may have some driveability issues (low or high idle, stalling, poor fuel economy) the relearn should complete within 10 minutes of idling and then 10 minutes of driving.

good luck and keep me updated

wesleyschacht@hotmail.com

Jun 14, 2009 | 2002 Ford Taurus

1 Answer

Diagnostic Codes p0171 bank 1, and p0174 bank 2 (too lean)


Those codes are for the oxygen sensors, lean fuel mixture on both banks. Change them, problem with stalling and rough idle should go away.

Apr 23, 2009 | Ford Expedition Cars & Trucks

3 Answers

2002 Ford Taurus ses 24v DOHC


1st thing change fuel filter. You probably pulled in some crud from the bottom of the tank. countrycurt0

Sep 09, 2008 | 2002 Ford Taurus

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