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Help please. car running terrible

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  • #16
    Originally posted by Plum Nuts View Post
    This sounds more like egr problem. get block off kit from summit. cost 20 bucks or so. Have you checked that you don't have a burnt spark plug wire. Check around someone may have a used 94 opti you can test with before buying a new one.
    I second the burnt plug wire...look over all the wires. Out of curiosity how many miles on the plugs and wires.
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    • #17
      Originally posted by MP81 View Post
      I think the opti is doing what it does best - failing.
      ^^dont take advice like this and immediately go out and buy a new Opti. get it scanned and then test the opti to see if its getting a signal. you can test a lot of the ignition parts to make sure that they are in proper working condition.

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      • #18
        plug wires or EGR. Optis usually fail at high RPMs first rather than low.
        -Joel
        1995 Z28 M6 - AI226/234 - autocross ricer
        1984 Scottsdale K10 - 305/4bbl/4spd


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        • #19
          Originally posted by my1994z28 View Post
          If I remember correctly,his drivetrain is 94 which is obd1..I didnt think that they stored the codes?
          My 95 is OBD1 and it stores codes
          - Brian Meissen
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          • #20
            95 is OBD 1.5
            Gone but not forgotten: 1986 Chevrolet Camaro IROC-Z

            "You shall ride eternal. Shiny and chrome."

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            • #21
              Well i changed my fuel pump, fuel filter and the rusted fuel line and my car start up right away know, the plug and wire are maybe 4 month old and that was the first thing i checked when it started running bad. It will run great until in warms up then it start running bad again. could this really be the egr?

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              • #22
                Im starting to think its a vacuum leak cause the line vacuum line from the valve cover to the throttle body cracked when i pulled it off the throttle body and there oil on the throttle body

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