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Ford Fiesta Engine Malfunction Warning - Accelorator issue?

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rams_headuk
rams_headuk Posts: 1 Newbie
in Motoring
Wondering if anyone has an answer for this annoying issue. Have a Fiesta MK7 2010 plate. Engine malfunction light comes on and car goes into limp mode. Turn the ignition off and on and disappears. Happens more in the first 15 minutes of starting the engine and when driving slowly. Recently had a new accelorator pedal put in which helped for a few weeks. The diagnostic seemed to be focusing on the accelorator but it is happening again now. Had new oil filter and oil change done. Any ideas?

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  • Browntoa
    Browntoa Posts: 49,602 Forumite
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    Lambda (Oxygen) sensor , coil packs ( sit over the spark plug)
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    Long term forum member
  • tacpot12
    tacpot12 Posts: 9,242 Forumite
    Ninth Anniversary 1,000 Posts Name Dropper
    The following thread should help:

    https://www.rac.co.uk/forum/showthread.php?7171-Fiesta-EAC-fail
    The comments I post are my personal opinion. While I try to check everything is correct before posting, I can and do make mistakes, so always try to check official information sources before relying on my posts.
  • GunJack
    GunJack Posts: 11,828 Forumite
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    EAC Fail are a real chase-your-tail type fault, there are many threads online for it, could be anything (literally anything) between throttle pedal and ECU.
    ......Gettin' There, Wherever There is......

    I have a dodgy "i" key, so ignore spelling errors due to "i" issues, ...I blame Apple :D
  • System
    System Posts: 178,335 Community Admin
    10,000 Posts Photogenic Name Dropper
    Played a similar game on my uncle's Ford. On his the things we found were:

    You can't just throw a throttle pedal in and everything is OK. The ECU has to have the calibration data for the throttle pedal put into it so it knows what values are foot off pedal and full throttle.

    Unless you fitted a new accelerator pedal then the chances are if it is a second hand one its failed too - this ended up being ultimately his problem although I'm not saying it is yours.
    This is a system account and does not represent a real person. To contact the Forum Team email forumteam@moneysavingexpert.com
  • cubegame
    cubegame Posts: 2,042 Forumite
    Part of the Furniture 1,000 Posts Name Dropper
    Take the throttle body off and clean with carb cleaner.
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