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  • Spark Plug Coils

    What is the easiest way to check if a specific spark plug coil is bad? Also, any recommendations on where to buy these things cheap?

  • #2
    Re: Spark Plug Coils

    what kind of car? F-150?

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    • #3
      Re: Spark Plug Coils

      98 Crown Vic

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      • #4
        Re: Spark Plug Coils

        I unplugged them one at a time to check for a change in engine rpm until I found my bad ones. No change in RPM and you have probably located a cylinder with a misfire problem.

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        • #5
          Re: Spark Plug Coils

          I was recommended and have been using the MSD PN 82428 Coil on Plug with a new set of OE Platinum plugs and they are great. Cost less than $400 for a set of 8 MSD's (vs cheap aftermarkets for about $45-$50 or OEM for $100+ each.)
          I put them in about 7 months/20,000 miles ago and still as strong as day one.

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          • #6
            Re: Spark Plug Coils

            Thanks for all the great help and info! I have a 2000 Crown Vic P71 dedicated CNG and need new coils.

            ebay has the DG508 equivalent Ignition Coils and the posted cross reference charts say these "fit" on my car; but, Ford says I need the DG510's and they don't know if the DG508's will work.

            Can anyone confirm if the DG508 equivalents will work on my car?

            Thanks again!

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            • #7
              Re: Spark Plug Coils

              just go with the regular kind for gasoline crown vics we did this with mine. and it works fine and it is a relatively cheap fix. nothing special about them just go to your local parts store and tell them what kind of vehicle you have minus the cng and it is a direct plug in replacement.

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              • #8
                Re: Spark Plug Coils

                Originally posted by Mshepcomm View Post
                I was recommended and have been using the MSD PN 82428 Coil on Plug with a new set of OE Platinum plugs and they are great. Cost less than $400 for a set of 8 MSD's (vs cheap aftermarkets for about $45-$50 or OEM for $100+ each.)
                I put them in about 7 months/20,000 miles ago and still as strong as day one.
                You don't need to put that kind of coil connecters the coils and the plugs
                are what is going to make it run right.

                autolite xp plugs or the non platinum OEM for the cng car
                and just some standard plug connecters

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