Question about 2000 Mercury Cougar
POSSBLE CAUSES FOR LEAN FUEL TRIM.STOPPED UP FUEL FILTER OR STOPPED UP FUEL INJECTORS.WEAK FAULTY FUEL PUMP.FUEL PRESSURE SHOULD BE 37 - 41 PSI.YOU COULD HAVE AIR LEAKS AFTER THE MAF SENSOR OR LEAKS IN THE PCV SYSTEM.CHECK FOR A EXHAUST LEAK NEAR THE OXYGEN SENSOR.LEAKING EGR VALVE GASKET OR VALVE DIAPHRAGM.MAF SENSOR DIRTY.UPSETTING AIRFLOW CONFUSING THE PCM.
Posted on Oct 09, 2010
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Posted on Jan 02, 2017
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