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5.8L (truck) -- plug gap and MPG

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    #16
    Originally posted by gadget73 View Post
    Did you step on the throttle when it was testing itself? If not, theres your 538. Could also be you didn't give it enough throttle.
    No, I didn't touch the throttle. I also got the codes during KOER for not hitting the brake and not turning the OD switch on/off.

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      #17
      Egr seems to be a common issue on these things. Mine had a new one when I got it and within 6 months I was having egr issue so I just pulled the vacuum line. The other one I'm not sure about.
      1989 Grand Marquis LS
      flat black, 650 double pumper, random cam, hei, stealth intake, Police front springs, Wagon rear, Police rear bar, wagon front ,exploder wheels, 205/60-15 fronts 275/60-15 rears, 1 5/8" headers, 2.5" offroad x pipe, Eclipse front bucket seats, Custom floor shifter, 4.10 gears, aluminum driveshaft and daily driven. 16.77@83mph

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