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Thread: 2003 Mercury Marauder Overheating

  1. #1

    2003 Mercury Marauder Overheating

    Hello guys,

    I am having a problem with my Marauder. I have already replaced the thermostat and water pump and no dice. My car is still overheating. What could be the problem? Also, the heat inside the car doesn't warm up, it just blows cold air. Any suggestions?

    Thank you,

    JF

    Sent from my GM1917 using Tapatalk

  2. #2
    Join Date
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    A well known issue with a well known solution. How long have you been familiar with the Marauder (or Panther) community?
    Current Garage:

    2005 Mustang GT Premium
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    “You've gotta dance like there's nobody watching,
    Love like you'll never be hurt,
    Sing like there's nobody listening,
    And live like it's heaven on earth.”
    William W. Purkey

  3. #3
    Join Date
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    Air in the system. Needs to be burped.

    https://www.mercurymarauder.net/forums/showthread.php?98532-Cooling-System-Burp-Procedure

  4. #4
    Join Date
    Jun 2011
    Location
    Northeast OH
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    7,999
    You have air in system, follow burp procedure listed, cold air only blowing is possibly bad blend door actuator. Google EATC self test and post any codes displayed. The test may also fix the issue temporarily.
    2004 SB Ported Trilogy 48
    Has supporting mods and stuff
    Thanks to Marty O for his help in updating this car.

    R.I.P.
    Rex "SC Cheesehead"

  5. #5
    Join Date
    Jul 2014
    Location
    NY
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    1,391
    I have the same exact issue. Overheating. I am going to replace the thermostat and burp the system. Is the correct part number for the thermostat: Motorcraft RT1085?

  6. #6
    Quote Originally Posted by Invective View Post
    A well known issue with a well known solution. How long have you been familiar with the Marauder (or Panther) community?
    A while now

    Sent from my GM1917 using Tapatalk

  7. #7
    Join Date
    Jun 2008
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    You "feel" the difference because you want to "feel" the difference. Since you just spent money on the upgrade you "have" to feel the difference

    I'm looking to eliminate the double pump process I have to follow right now to get the pedal hard

    2004 300A Procharger #0010 D1X
    2003 300A Procharger #0017 D1SC (SOLD. Last I heard, it was in Washington State)

  8. #8
    Join Date
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    Quote Originally Posted by Invective View Post
    A well known issue with a well known solution. How long have you been familiar with the Marauder (or Panther) community?
    This may be the least helpful response to a thread I've ever seen in my life. A "well known issue with a well known solution" might not be that commonplace to someone with a low post count like the OP.

    As others have said, more constructively, air in the system is the likely culprit and you should follow the burp procedures posted above.
    '03 Marauder | '91 Country Squire | '18 Flex Ecoboost | '92 Shadow VT1100
    former Panthers: '02 MGM, '04 MGM, '04 MGM v2.0, '04 MM, '07 P71 w/5-speed, '04 CVLX, '03 SAP P71, '10 P7B
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  9. #9
    Thank you all for your help!

    Sent from my GM1917 using Tapatalk

  10. #10
    Join Date
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    Location
    Charlotte, NC
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    Quote Originally Posted by a_d_a_m View Post
    This may be the least helpful response to a thread I've ever seen in my life. A "well known issue with a well known solution" might not be that commonplace to someone with a low post count like the OP.

    As others have said, more constructively, air in the system is the likely culprit and you should follow the burp procedures posted above.
    In case you failed to notice, this was posted under 'The Classic Lounge'. Thinking my response was appropriate and polite. Glad the OP found what he was looking for.
    Current Garage:

    2005 Mustang GT Premium
    2019 Ranger Lariat Super Crewcab 4WD
    2015 Triumph Trophy SE



    “You've gotta dance like there's nobody watching,
    Love like you'll never be hurt,
    Sing like there's nobody listening,
    And live like it's heaven on earth.”
    William W. Purkey

  11. #11
    Join Date
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    Location
    Union City, CA
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    Don't trust some of the aftermarket thermostats listed for the Marauder. Some of them are the incorrect thermostate.
    2003 Mercury Marauder 300B (Daily Driver)
    1988 LTD Crown Victoria S

  12. #12
    Join Date
    Oct 2014
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    Quote Originally Posted by 88LTDCV351 View Post
    Don't trust some of the aftermarket thermostats listed for the Marauder. Some of them are the incorrect thermostate.
    Thinking the rule of thumb here is OEM. One of the few deviations I'm aware of is air suspension components as the aftermarket pieces reportedly work well and are substantially less expensive.
    Current Garage:

    2005 Mustang GT Premium
    2019 Ranger Lariat Super Crewcab 4WD
    2015 Triumph Trophy SE



    “You've gotta dance like there's nobody watching,
    Love like you'll never be hurt,
    Sing like there's nobody listening,
    And live like it's heaven on earth.”
    William W. Purkey

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