302 gremlins

Discussion in '94-95 5.0 - Specific' started by 94gt302e9vert, Dec 23, 2015.

  1. 94gt302e9vert

    94gt302e9vert New Member

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    '94 GT, Manual, Bone Stock, Very Well Maintained.

    here is the problem, short but sweet ...

    if it is cold outside:
    car begins to fire out of intake,
    give it gas the backfire moves to exhaust,
    barely moves forward while car bucks violently,
    stalls,
    restart and the same thing for a few more feet then stalls,
    next startup the rpms skyrocket and upon dropping it runs as normal.
    if I leave the car before 3 starts the cycle of exactly what I described starts over.

    if car is in stop and go traffic:
    eventually voltage drop (I assume that's a byproduct of loss of vacuum),
    car bucks,
    backfires out of exhaust and stalls,
    restarts hard and with any gas fires out of intake,
    runs for about a quarter mile no faster than 15mph then stalls,
    restart and backfires out of exhaust then stalls,
    upon 3rd start rpms spike then runs fine.

    I have ideas such as vacuum leak and timing, but I don't understand how it could follow the exact same behavior every time. Weird.

    any ideas??
     
  2. RichV

    RichV Well-Known Member

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    Firing order and timing is what I'd check 1st. Just make sure they are 100% correct. Next plugs/gap.

    When was the last time wires, plugs, cap/rotor were changed?
     
  3. 95opal

    95opal Well-Known Member

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    I wiuld look at the PIP sensor in the dizzy. Common problem with the 94 95 cars
     
  4. CC'S95GT

    CC'S95GT Legend

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    Have you pulled codes? the 94/95 GT's are OBD1 so don't try to use the OBD2 port under the dash.
    With so many odd symptoms it's sounding the computer is fried. Ck the connections to it and make sure they're tight and secure..
     
  5. busta

    busta New Member

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    Agreed. Or maybe worn teeth on your distributor gear.
     
  6. the5.ohh

    the5.ohh Legend

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    When my intake made a pop (backfire) it was my ignition coil that went bad.