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  1. #1
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    Tan/black port temp sensor wire?

    I’ve been working on a 92 Bridgeport EFI engine trying to get it to idle smooth,
    And there is a black and tan wire coming off of the Portside temperature sensor that goes nowhere… Can someone please tell me where this wire goes… It has a male bullet connector.... thanks in advance! Kerry

  2. #2
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    Sender for the temp gauge.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  3. #3
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    Does it tie into the computer? Or wiring harness?

  4. #4
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    Wire harness, should be a wire same color coming out of the 8 pin connector on the boat side.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  5. #5
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    Will it help the engine to run leaner at an idle? Thanks

  6. #6
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    No just for a temp gauge.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  7. #7
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    Ok, thanks for your help!!!

  8. #8
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    I think maybe the tan/black off port side is a temp sensor that goes to the ecu and tps and the starboard is the temp switch. If I am correct it will make a difference in idle at temp. Your tps could also be causing a rich condition. Set it at .25 volts.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  9. #9
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    Quote Originally Posted by rock View Post
    I think maybe the tan/black off port side is a temp sensor that goes to the ecu and tps and the starboard is the temp switch. If I am correct it will make a difference in idle at temp. Your tps could also be causing a rich condition. Set it at .25 volts.

    Rock
    Thinking this is an old analog Bridgeport with the vacuum style tps, only temp sensor the ecu uses is intake air temp.

    Dave
    1980 Cougar 19 tunnel,90 2.4L Bridgeport EFI in middle of restoration.
    1988 BAJA Sunsport 186, 96 225 Pro Max
    79 12' Auminum, 95 Merc 9.9
    RIP Stu
    "So many idiots, so few bullets"

  10. Thanks rock thanked for this post
  11. #10
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    Yes, Dave is correct....
    old analogue vacuum tps... I think I’m going to try some new reeds and maybe a Rapair manual tps..
    any thoughts on those?
    Ive got this motor on my old STV pro comp ski... running good once it’s on plane..... thanks again!

  12. #11
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    You would think I might have considered that considering I am also old technology.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  13. Likes Dave Strong liked this post
  14. #12
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    tan/ blue temp gauge. tan/ black efi sensor

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