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Thread: LR solenoid circuit failure C1790

  1. #1
    Join Date
    Jun 2008
    Location
    Florence, NJ
    Posts
    170

    LR solenoid circuit failure C1790

    guess its my turn but only have 111000 on it. wondering if everyone using new or used solenoids?
    2003 Mercury Marauder Black
    1988 Thunderbird Turbo Coupe
    1974 HD Shovelhead
    1998 Chevy K1500

  2. #2
    Join Date
    Jun 2008
    Location
    Florence, NJ
    Posts
    170
    ok ordered new oem solenoid. will post result after I replace solenoid and air springs.
    2003 Mercury Marauder Black
    1988 Thunderbird Turbo Coupe
    1974 HD Shovelhead
    1998 Chevy K1500

  3. #3
    Join Date
    Nov 2002
    Location
    St. John, IN
    Age
    45
    Posts
    14,251
    You can hook 12 volts to the solenoids, tap them, fill them with silicone spray and they will usually work as new again

  4. #4
    Join Date
    Jun 2008
    Location
    Florence, NJ
    Posts
    170
    thanks zak. didn't find that. any wire diag handy? think they are three wire.
    2003 Mercury Marauder Black
    1988 Thunderbird Turbo Coupe
    1974 HD Shovelhead
    1998 Chevy K1500

  5. #5
    Join Date
    Jun 2008
    Location
    Florence, NJ
    Posts
    170
    replaced left rear solenoid and both rear air sprigs. no light no code all good.
    2003 Mercury Marauder Black
    1988 Thunderbird Turbo Coupe
    1974 HD Shovelhead
    1998 Chevy K1500

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