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    #1

    Engine Light Question...

    Hey there! I have a quick question that I'm sure someone can answer. What could be the matter with a 351W engine when the engine light comes on at idle, but goes off when you press on the accelerator? It also seems like it wants to die a lot. How would I go about fixing the problem? Any help will be greatly appreciated! Thank you!



    1981 Ford LTD Crown Vic (FOR SALE!)
    1979 Pontiac Firebird
    Tags: None
    #2
    It may be low oil pressure due to low oil level, or incorrect oil grade, a faulty oil pressure sensor, worn engine bearings and/or oil pump or high engine operating temperature. In my 302 it was the engine bearings.
    sigpic1988 Colony Park

    Comment

      #3
      Low oil pressure most likely. Pull the idiot sender out and hook up a real gauge to see whats going on. Low idle will also make for low oil pressure, so you may have a carb issue if its idling under 650 rpm or so.
      86 Lincoln Town Car (Galactica).
      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

      91 Lincoln Mark VII LSC grandpa spec white and cranberry

      1984 Lincoln Continental TurboDiesel - rolls coal

      Originally posted by phayzer5
      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

      Everything looks like voodoo if you don't understand how it works

      Comment

        #4
        If it is low oil pressure, would running a heavier weight of oil help?



        1981 Ford LTD Crown Vic (FOR SALE!)
        1979 Pontiac Firebird

        Comment

          #5
          It would be a bandaid. If its low, and you're running the correct weight of oil (should be 10w30 or 10w40) then something is wrong. Most likely the main bearings are worn out, but it could be a plugged oil pickup. 351's don't usually have the main bearing problems 302's have, so you'd probably want to look into that. If it is worn out mains, then thicker oil is a fair solution. If its a plugged oil pickup, then thicker oil won't really help and you risk massive damage if you starve the motor for oil flow. Oil pressure is actually less important than oil flow for these motors.
          86 Lincoln Town Car (Galactica).
          5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

          91 Lincoln Mark VII LSC grandpa spec white and cranberry

          1984 Lincoln Continental TurboDiesel - rolls coal

          Originally posted by phayzer5
          I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

          Everything looks like voodoo if you don't understand how it works

          Comment

            #6
            put an oil pressure gauge on it.....the replace engine light sucks

            1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
            2006 Lincoln Town Car Signature. Stock for now
            1989 Ford F-250 4x4 much much more to come, sefi converted so far.
            1986 Toyota pickup with LSC wheels and 225/60/16 tires.
            2008 Hyundai Elantra future Revcon toad
            1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

            please be patient, rebuilding an empire!

            Comment

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