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egr sensor 5.0 idle

  1. 1989 Mustang LX Convertible 5.0, 5 Speed

    Introductions
    Just a daily driver saying "Hello" as I join. Just had the entire top end rebuilt @ 188k because I blew a head gasket >DUMB< and a few months later, engine runs rough when cold or at idle. I expect (or hope) an EGR or something simple. Mechanic mentioned a possible exhaust or vacuum leak...
  2. 1987 Mustang GT, thermactor system in op

    5.0L Tech
    finally after 21 years my 87 GT finally failed smog I had to go to a test only station and the guy couln't/ wouldn't tell me what had failed exactly only that it was running rich/unbuned fuel. I hooked up a snap on scanner and got 3 different codes 33,44,94 2 have to do with thermactor system in...
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