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1995 Ford Aspire Question: Hesitation (or Stumble) on acceleration



, Portland, OR, February 18, 2009, 16:50

After engine wash w/water: Hesitation / Stumble on acceleration, MIL code is 18

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  • Answer #1

    February 18, 2009, 21:30

    Looking at Trouble code chart for your vehicle does not display trouble code 18. It shows trouble code 17. Next trouble after 17 is 25. Please have a qualified mechanic perform a diagnostic of your Onboard Computer System and give you proper trouble code.

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  • Reply

    , February 18, 2009, 21:46

    To Answerer No. 1: Yes, my vehicle DOES display trouble code 18: I checked with Alldata and Mitchell Automotive software (other person has this software). This is what the table of trouble codes states:
    The table lists various codes, including the codes 17 and 25,
    then it clearly states, in BOLD CAPITAL letters:
    "CODES NOT LISTED - PGC, See: Powertrain Management/ Computers and Control Systems/Testing and Inspection.../Pinpoint tests/PGC - Power and Ground Connections"
    So, it directs me to go through tests of Computer's power and ground connectors, and possibly inputs on computer from various sensors. I could go through all that, but I figured that experienced mechanic (not a dude from the street like the one who said "there is no code 18") would narrow down the tests for me based on his/her experience with these symptoms.
    Moreover, various online sites (just Google "ford trouble codes") give description of code 18 and three reasons for it.

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