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Thread: EATC Self diagnostic check error code

  1. #1
    I post a lot... porschpow's Avatar
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    Default EATC Self diagnostic check error code

    I want to know what the problems are if you have a code 031 on the EATC. I know it means the temperature sensor is open.


    What does this mean
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

  2. #2
    I'm an air-conditioned gypsy gadget73's Avatar
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    it means either the sensor is bad, or the wiring between the sensor and the EATC is damaged. Its the in-car sensor. Most likely the sensor itself is bad.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  3. #3
    I post a lot... porschpow's Avatar
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    oh ok i believe the in car sensor is that little round thing to the right of the eatc (grill)
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

  4. #4
    I post a lot... porschpow's Avatar
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    Where can you get this part. I was unable to find it on Rockauto
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

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    Member WagonMan's Avatar
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    I have one from a 97 LTC Cartier I parted with 75Kmiles. VEIGHTPETE@GMAIL.COM
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    1990 Colony Park
    1970 HEMI Superbird

  6. #6
    Member EaOutlaw1969's Avatar
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    Does the Heat- A/C work normal during manual mode?

    Are you getting cold or hot air discharge during automatic temp mode?

    Temperature discharge in Automatic mode should dictate which diagnostic pin point test you would do and it may also dictate which part or wiring etc could be bad faulty open shorted etc.

    I like to diagnose problem before buying and or waiting for parts that may or may not fix the problem.

    This link gives you a idea of what I am going on about. ( which may or may not apply to your ride )

    http://www.fixya.com/cars/t26925593-...ing_code_31_in
    2000 MGM LS Palm Beach Edition a work in progress

  7. #7
    I post a lot... porschpow's Avatar
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    The heat works well. The weird thing is that it throws the cold only when it's cold out, like real cold out.

    Haven't tried the A/C yet, so I don't know how well that works

    And I rarely put it on automatic mode.

    I will look at the link that you gave. Thank you for your help!
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

  8. #8
    I'm an air-conditioned gypsy gadget73's Avatar
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    from here

    http://www.idmsvcs.com/2vmod/eatcswap/selftest.html

    "The vehicle interior temperature should be between 4-32C (40-90F) when carrying out the self-test. If the temperatures are not within the specified ranges, false in-car temperature sensor DTCs will be displayed. "

    so faults only when its cold outside probably don't mean anything.

    86 Lincoln Town Car (Galactica).
    5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

    91 Lincoln Mark VII LSC SE, triple black (Timewarp) - poly front bushings, KYB struts and shocks, Holley SystemMax1 lower intake, SilverFox AOD valve body,

    1984 Lincoln Continental TurboDiesel - rolls coal

    Quote Originally Posted by phayzer5 View Post
    I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

  9. #9
    I post a lot... porschpow's Avatar
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    Thanks! Look like today I won't be able to do anything anyway!
    "To Find yourself, you must first lose yourself"

    -1973 Volkswagen Bus Westy
    -1986 Honda Magna 700cc
    -1989 Lincoln Town car Signature Series
    -2011 Subaru Outback

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