Question about 2001 Ford Windstar
Thats a lean code which mean there is a vaccum leak or fuel flow is low. can be the fuel filter, most likely it is a vaccum leak, spray with carb spray around the intake and the hoses and see if the idle changes
Posted on Mar 23, 2011
These two codes DO indicate a vacuum leak or low fuel pressure condition, but when they occur together it is usually caused by a faulty Mass Airflow Sensor. When the sensor fails to give a correct reading, the ECM tries to compensate air/fuel ratio to correct a condition that does not exsist, causing more air to be delivered, thus displacing the fuel that should be burning and causing a REAL lean condition. These 4.2L engines are also known to accumulate large amounts of oil and debris in the intake, causing the Isolator Bolt Grommets to harden and fail. If replacing the MAF sensor does not fix it, you can usually diagnose an intake leak with a smoke test done by a mechanic. The grommet leaks don't always show up, but you will see any other leaks that may exist. And small leaks around the PCV valve are the norm on these engines and do not normally cause issues since it is such a small amount of air.
Posted on Sep 16, 2012
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Posted on Jan 02, 2017
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