1999 Mercury Station Wagon Battery

1999 MERCURY SABLE STATION WAGON
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J53
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Electrical problem
1999 Mercury Station Wagon 6 cyl Automatic 78000 miles

My car's engine begain turning over this morning. Tonight it was dead when I stopped for gas. Once it was jumped it started after a few minutes. I drove about 10 minutes and stopped it. It would not restart. The battery was replaced a month ago.
Any ideas?
May 10, 2010 at 8:26 PM
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RASMATAZ
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Probable causes of an engine running rich are as follows:

1.Fuel pressure not within specs.Can be cause by restricted fuel return line or defective fuel pressure regulator.
2.Defective Oxygen Sensors.
3.Leaking injectors.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
May 10, 2010 at 8:43 PM