99 expedition check engine light & missing - Ford Forum - Enthusiast Forums for Ford Owners

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Old 08-24-2006, 11:58 AM
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Join Date: Aug 2006
Posts: 4
Default 99 expedition check engine light & missing

I got a 1999 ford expedition and these are my issues: filled up with gas drove about 200 miles and expedition started to miss very bad and check engine light was flashing. Started with new spark plugs, didn't fix. when I had it scanned no codes came up except the on for the check engine light, but the left bank down streamO2 censor was not as responsive as the others so I replaced it. I have checked the injectors and the COP's (coil over plug) they where good .The fuel pressure is 35 psi, the fuel pressure regulator is making a differance when dissconected. The tank was drained to within about 1/16 of a tank then filled with 91 octaine and lucas injector cleaner and fuel conditioners was added.

If anyone can help
Thanks: Crazyman
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1999, 200, 2006, 99, bad, blinking, check, cop, engine, expedition, flashing, ford, light, miss, missing

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