Question about 2000 Ford Windstar

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System To Lean

Problem System to Lean (bank1-2)?

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We had a similar problem on our 1999 Windstar. Engine light stayed on from the day that we bought it. We tried O2 sensors (since that's what the used car guys told us it was) but that didn't fix it. Engine began to run rough and stall in colder, wet weather. My guru/mechanic finally discovered that it needed to have the intake gaskets replaced. Haven't seen the engine light in months... it feels kinda weird.

Posted on Jan 02, 2009

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1 Answer

Engine light on


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links to information on the codes

it means that the O2 sensors in your vehicle detected a lean condition in their respective banks. this could be caused by a dirty MAF (mass air flow) sensor or a vacuum leak downstream from the MAF sensor

sometimes you can clean the MAF with electronics cleaner or brake cleaner but be sure to take it off the vehicle first. be careful not to damage the MAF while spraying the cleaner, and allow it to dry completely before installing it on the vehicle.

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I am not sure what your Mazda is, but from the sounds of it, both of your Oxygen Sensors are shot. Replace them both, or check for vacuum leaks. It may be a good time to inspect and replace the PCV Valve and PCV Valve hose, too.

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Failed OBDII Diagnstic trouble codes P0761 and O1744 What does this mean?


code P0761-
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P0761 FORD Description Shift solenoid valve 3 is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position. When is the code detected? The P0761 code is detected when the ECM has detected a mechanical fault with the solenoid energized, valve stuck off code O1744- is not a code these are the ones I have found that come close
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Sounds like you have low fuel supply or a leak in intake system causing lean codes, check fuek pressure and volume first. Cat converter effeciancy could be caused by the lean codes, purge system sounds like solenoid failure, check for high resistance accross purge vent solenoid.

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