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Thread: Knock sensor replacement

  1. #1
    Join Date
    Oct 2013
    Location
    Fontana CA/Las Vegas NV
    Age
    78
    Posts
    58

    Knock sensor replacement

    Has anyone changed the knock sencer on the 2003?

  2. #2
    Join Date
    Sep 2002
    Location
    Cape Cod, MA
    Posts
    13,676
    Intake manifold has to come off.
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  3. #3
    Join Date
    Oct 2003
    Location
    Beaufort, SC
    Posts
    7,719
    What's wrong with 'em??
    No Marauder

  4. #4
    Join Date
    Jan 2016
    Location
    South NJ
    Posts
    459
    Side question: if your original engine has 1 sensor but your new one has 2, is it a direct plug and play?
    2003 Marauder 300A
    #2928 of 7838
    Build date: 8/6/02
    Ship date: 5/28/03
    14.33 @ 96.82 with OLD engine
    6R80 swap in progress

    1968 Chevelle
    NA/Pump Gas 10.4 @ 128 mph
    416/4L85E LSA Supercharged build underway

  5. #5
    Join Date
    Sep 2002
    Location
    Cape Cod, MA
    Posts
    13,676
    Maybe. Not sure if the PCM strategy is the same for 2004 vs. 2003 and whether you can just hook up the one and leave the other unconnected. (2003 PCM only has one input)
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  6. #6
    Join Date
    Oct 2003
    Location
    Beaufort, SC
    Posts
    7,719
    I think Zack said the knock sensors don't offer much protection......maybe he will chime in??

    Mine are disabled in the tune I have for the blower!!
    No Marauder

  7. #7
    Join Date
    Nov 2002
    Location
    St. John, IN
    Age
    45
    Posts
    14,251
    Totally worthless sense of security.

  8. #8
    Join Date
    Nov 2002
    Location
    St. John, IN
    Age
    45
    Posts
    14,251
    I have put a tank of 89 in and gone WOT just to test the knock sensors.
    It will ping until it blows up.

  9. #9
    Join Date
    Oct 2003
    Location
    Beaufort, SC
    Posts
    7,719
    Quote Originally Posted by Zack View Post
    Totally worthless sense of security.
    TADA!!
    No Marauder

  10. #10
    Join Date
    Feb 2017
    Location
    Tampa, FL
    Posts
    177
    Why are people knocking on the knock sensors? (pun intended)

  11. #11
    Join Date
    Feb 2012
    Location
    harrison twp,mi
    Posts
    8,700
    On the back of the passenger side head.
    After reading this I decided to change mine too....

    IMG_2086.JPGIMG_2085.JPG



    I kid I kid

    Only apart to add booooost!!!!!


    Sent from my iPhone using Tapatalk
    Those were the days.........

    DANG THEY'RE CUTE!!!!!!
    Smile and Nod
    I love THIS bar

  12. #12
    Join Date
    Oct 2013
    Location
    Fontana CA/Las Vegas NV
    Age
    78
    Posts
    58
    Thanks lei372 I found it and found that the plug was not fully seated. I was able to pull on the wires and separate the plug. I assume when the engine was replaced with the 55K motor they did not fully seat the plug. I pushed it until it clicked, disconnected the battery put the puter in null drove up the Cajone Pass knock is gone.

  13. #13
    Join Date
    Feb 2012
    Location
    harrison twp,mi
    Posts
    8,700
    Love it when a plan comes together.
    Those were the days.........

    DANG THEY'RE CUTE!!!!!!
    Smile and Nod
    I love THIS bar

  14. #14
    Join Date
    Jul 2010
    Location
    Guntersville Al.
    Age
    59
    Posts
    1,291
    I'm working on a motor now that the mounts for the sensors have been cut off. And there is no sensors or wires for them.

    It was an honor to have
    my ASS kicked by you!
    Rest In Peace!
    Paul T. Casey

  15. #15
    Join Date
    Aug 2017
    Location
    US
    Age
    36
    Posts
    21
    How many knock sensors for the 2003 mercury marauder 1 or 2

    Sent from my SM-N910P using Tapatalk

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