Help with Trouble Codes

Discussion in '1989 - 1992 Ford Ranger' started by Uncle Buck, May 4, 2015.

  1. Uncle Buck

    Uncle Buck New Member

    I've been reviving a low mileage 91 with a 2.3 that sat in my neighbor's yard for a few years, and so far it's gone pretty well: New fuel pump, timing belt, brakes, water pump etc. However, the beast keeps losing power at unpredictable moments, as though it was a fuel problem, and then it recovers nicely after I pull over for a moment or two. Finally I took it to O'Reilly's and they ran the computer and came up with two codes: 33 - "EGR Valve opening not detected," and 51 - "ECT Indicated -40 F/circuit open." Not sure if either points to my problem or what to do next. Start replacing things? Further testing? All informed suggestions welcome. Thanks. Uncle Buck
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  3. wafire

    wafire New Member

    I'm not the most informed but my 91 Ranger had a similar issue and my EGR Valve went bad. I replaced it and it seemed to do the trick. Pretty inexpensive thing to try

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