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Oil pressure/engine coolant light

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Old 02-23-2011, 03:47 PM
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Join Date: Nov 2002
Vehicle: 1999 Ford Expedition
Posts: 3
Oil pressure/engine coolant light

On my 99 4x4 XLT Expy (5.4L) the Oil pressure/engine coolant light and the Service Engine Soon light both stayed on when I started it today. The oil and coolant levels are fine. The oil pressure gauge is indicating as it normally does. I took it for a ride of about 5 miles,
the temperature gauge did not move. Also the AC is not blowing cold now, I assume it is related.

Will there be code thrown since the SES light is on?

Temperature sending unit bad? Where is the sending unit located on a 5.4L?

Bob W [FL]
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