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Thread: Got a miss SC marauder

  1. #1
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    Got a miss SC marauder

    Out of the blue now have a miss in the DOHC engine. I have a scanner that cam with the car that shows and ignition module code, but I have to admit that is the end of my knowledge with all this new fangled EFI crap.

    Anything I can do at home or get my scanner to tell me which one?

  2. #2
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    Maybe tell us the code and we might be able to help better?
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  3. #3
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    I misread the title of the thread. I thought this was a Miss Marauder pageant.

  4. #4
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    If its just a coil pack that is cake to fix.

    Matt H.
    (sold)2004' SB, 268rwhp/295tq
    1990 Mustang GT, Dart 363, Si-trim, T56, Holley Terminator X. 622rwhp/527tq
    2003 SVT Cobra, Posi Port 497rwhp/481tq. SCT Pro Racer Pack.
    2017 F-150, 5.0
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  5. #5
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    The scanner I have does not give a number code like some GM code readers I have seen in the past. This just says Ign Mod. I figured the computer could tell which of the 8 was misfiring.

  6. #6
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    I dont think these cars have a ignition module. Just the coils. Need a good scanner to find out which hole is missing.
    Neil
    2003 Mercury Marauder - DBP/DC
    2003 Mercury Marauder - BLK/DC
    2003 Mercury Marauder - SB/LF
    2004 Mercury Marauder - DTR/LF
    1964 Mercury Marauder - BLK/BLK

  7. #7
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    If your car is supercharged I'm sure you have a hand held tuner for it. They will read codes too.

    Matt H.
    (sold)2004' SB, 268rwhp/295tq
    1990 Mustang GT, Dart 363, Si-trim, T56, Holley Terminator X. 622rwhp/527tq
    2003 SVT Cobra, Posi Port 497rwhp/481tq. SCT Pro Racer Pack.
    2017 F-150, 5.0
    2013 SHO DIB Performance Pack

  8. #8
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    That is what I have, a Hand held tuner . I will get it back out and tell you the brand.

  9. #9
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    Just start pulling the coils off the spark plugs one at a time. When you get to the one where there is no change, that's the bad coil pack. Sometimes you can hear it out each side of the exhaust pipes. I had a coil go bad and I could tell it was the right side because the right side exhaust sounded different. Started pulling coils and I could tell it was the second from the front because there was no change in engine rpm when I pull it.

  10. #10
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    Quote Originally Posted by crouse View Post
    Just start pulling the coils off the spark plugs one at a time. When you get to the one where there is no change, that's the bad coil pack. Sometimes you can hear it out each side of the exhaust pipes. I had a coil go bad and I could tell it was the right side because the right side exhaust sounded different. Started pulling coils and I could tell it was the second from the front because there was no change in engine rpm when I pull it.
    That can be a technique to use BUT sometimes the coil packs work at under but show failure under load.

  11. #11
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    I just replaced all of mine yesterday. Jeff at Mo's hooked it up to their diagnostic machine and found 1,2&8 not firing right. What prompted this was hesitation at the beginning of acceleration. I kept the good ones as back up's.

  12. #12
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    Quote Originally Posted by 345HP87SSAC View Post
    The scanner I have does not give a number code
    Never heard of a scanner like that....
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  13. #13
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  14. #14
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    Turned out to be a bad spark plug. Changed all 8. Took pics and kept the old ones. WIll double check the new ones in 2000 miles.

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