Originally posted by BeachBum:
My CEL went out this morning. Reason: Filled the fuel tank with mid-grade fuel instead of Premium. This light has been on for about 6 months. 
Since you don't know why the CEL was on, the gasoline gets the credit? It is impossible for the octane rating of the fuel to affect something like this.
Perhaps your gas cap just wasn't tightened.
Go have the codes scanned and write them down. They are saved in the computer for a period of time.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
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