Newbie needs help with codes! | Ford Escort Owners Association (FEOA)

Newbie needs help with codes!

Discussion in '2nd Gen 1991-1996 1.9L SOHC' started by Mjestes17, Jan 13, 2020.

  1. Mjestes17

    Mjestes17 FEOA Member

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    Hey guys! Can someone decipher these codes for me please? Video link here:


    I've thrown a bunch of brand new parts at this escort I bought for $100. New PCV, spark plugs, TPS, IACV, Battery, battery terminals, etc. Has a rough idle that imitates a cam lope and once I installed the new TPS and IACV it revs really high and stay at 1700RPM while continuing to accelerate down the road without my assistance.
  2. Swift

    Swift FEOA Donator

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    What kind of iacv
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  3. Mjestes17

    Mjestes17 FEOA Member

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    I believe (without being home) it's Standard brand
  4. zzyzzx

    zzyzzx FEOA Member

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    What year?
  5. Mjestes17

    Mjestes17 FEOA Member

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    1993 1.9L automatic
  6. marclar

    marclar Moderator Staff Member

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    did you install the iacv in the same orientation the old one was?
  7. Mjestes17

    Mjestes17 FEOA Member

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    I mean, I installed it upright the way it's supposed to be installed lol. I did notice that the electrical plug faces the opposite direction though.
  8. zzyzzx

    zzyzzx FEOA Member

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    This would be 2 digit codes, correct?
  9. Mjestes17

    Mjestes17 FEOA Member

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    I assume yes from what I've read, but I'm new to this car and don't know for sure. That's why I was soliciting the help of everyone else
  10. marclar

    marclar Moderator Staff Member

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    the reason i ask, is because the pintle is spring loaded for one direction. if its backwards, it can be forced open by incoming air.
  11. Mjestes17

    Mjestes17 FEOA Member

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    So it would matter if the electrical plug was reversed? I got one from a 1994 then replaced it with a 1993, neither of which solved the issue
  12. zzyzzx

    zzyzzx FEOA Member

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    I see codes 57, 58, 71, 72, and 81.
    Having written that, my 1995 uses 3 digit codes.

    57- Idle Tracking Switch Circuit Open Or Grounded.

    58 - Vane Air Temperature Sensor Input Greater Than Self Test Maximum.

    71 - Software Re-Initalization Detected OR Insufficient Manifold Absolute Pressure/Mass Air Flow Change During Dynamic Response Test.

    72 - Power Interrupt Software Re-Initalization Detected.

    81 - Secondary Air Bypass Circuit Failure.

    Someone else here should verfy all of this.
    I am more sure about the 57 & 58 codes, and that code 57 is probably what is causing your idle issue.
    Last edited: Jan 16, 2020
  13. Mjestes17

    Mjestes17 FEOA Member

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    I never saw a 57 on the code list. What are those?
  14. zzyzzx

    zzyzzx FEOA Member

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    EEC-IV two digit codes, as per the internet.
  15. zzyzzx

    zzyzzx FEOA Member

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    The Idle Tracking Switch (ITS) is part of the IAC. So it's the IAC, or the IAC circuit. Or possibly a TPS, or a TPS that needs adjustment? I would be looking at those two the most.

    What brand replacement parts for those did you use?
  16. Mjestes17

    Mjestes17 FEOA Member

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    I've replaced both of those and nothing helps! Both are from Oreilly Auto, STANDARD brand on both.

    I removed the throttle body, cleaned everything, ensured it closes completely and reinstalled everything. Still continues to accelerate, revs extremely high when I put it in neutral or park, and then chokes while idling. Only got 23mpg on this last tank because of the RPM issue
  17. marclar

    marclar Moderator Staff Member

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    71, 72, i would be checking engine and body grounds first before doing anything else.
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