code 71

  1. Ali M

    '94 Code 71, EGR Bypass technique..

    I followed same procedure as mentioned in this thread but the CEL still on. Is there anything else I need to do like may be driving it for a while or additional steps like re-connecting the ECU fuse? or could it be a something else?
  2. Klowie74

    Another CEL 71 question

    New here and only owned a 94 (240,000 miles) for a month. I've done a lot of searching and reading on the forum but haven't found exactly what I'm looking for. My CEL went on yesterday and I think it may be because I didn't tighten my gas cap all the way. Is this possible? I pulled code 71 and...
  3. mulchiro

    CEL code 71 on my 1991 and THIS happened??

    Threw code 71 yesterday so I have been reading threads and taking things apart to see what's going on. Pulled my modulator and vacuum hoses to check for carbon and it was pretty clean. Might even be somewhat new based on how clean the little filter is. But then I turned it over and saw this...
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