hiccup

  1. S

    Electrical 1995 Mustang GT slight hiccups/hesitation at around 2k rpm looking for a fix for the dreaded code 212

    Been working on this issue for months maybe even years now, it’s the same thing every test drive, it runs perfectly except for size varying hiccups and/or hesitations up at around 2k rpm, the code we’ve been receiving all this time has been code 212: loss of IDM (ignition diagnostic monitor)...
  2. J

    1992 GT not pulling hard and misfiring

    my fox was running fine up until a week ago. now when i floor it it doesnt pull hard, kind of hiccups. im also starting to hear weird pops when i let off the gas which i think is misfire. the idle is good for the most part but just yesterday i noticed it drop a little 2-3 times over the period...