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91 Accord Stutters When Accelerating

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    #1

    91 Accord Stutters When Accelerating

    My 91 Accord EX with about 230,000 miles stutters some mornings when accelerating in 1st, 2nd and sometimes 3rd gears. I can feel the engine stuttering, then after a few seconds the engine will catch and accelerate normally. I'd describe the feeling as though spark plugs are not all firing in order. Spark plugs, distributor cap, rotor, and cables have all be replaced about 1 1/2 years ago. Timing belt is only 2 1/2 years old (not sure if this matters). Speed sensor is shot so speedometer jumps around or doesn't work, but car is a 5-speed and my mechanic says not to worry about replacing since its a manual transmission. Battery replaced recently. Oil changed regularly. This car has no other issues I'm aware of.

    I know this question may have already been answered in this forum, but want to open this specific question for discussion. Any help is greatly appreciated.

    91 EX, body/chassis ~235,000; rebuilt f22a6 crate engine ~65,000 (3/2011)
    Neuspeed Super Cup Kit (7/2010)
    TAS rear drum-to-disc conversion (6/2010)
    Above photo taken - 4/2010
    Tags: 91 accord, acceleration, stutter
    #2
    Sounds like an Oxygen Sensor, try unplugging it and driving around as a test, your check engine light will be on, but it will not harm anything. If unplugging it resolves the problem, then you should replace your o2 sensor, and reset your ecu after replacement.

    If it doesn't fix it, I would check the functionality of your EGR (Exhaust Gas Recirculatory) System, when was the last time you had the EGR ports cleaned?
    PT3/6 Development Thread | My 1991 LX Coupe | DIY: 90-93 Tcu Fix

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      #3
      Thanks! I have never had the EGR ports cleaned... I don't think I have. I am the second owner, but I don't think it was done by the previous owner though. How can I do this? Or should I have it done? Also, where is the O2 sensor and how can I reset the ECU? Sorry for all the questions. I'm new to car repair.

      91 EX, body/chassis ~235,000; rebuilt f22a6 crate engine ~65,000 (3/2011)
      Neuspeed Super Cup Kit (7/2010)
      TAS rear drum-to-disc conversion (6/2010)
      Above photo taken - 4/2010

      Comment

        #4
        nevermind my questions... i just found all the answers online. ill check the o2 sensor for sure. sounds easy.

        91 EX, body/chassis ~235,000; rebuilt f22a6 crate engine ~65,000 (3/2011)
        Neuspeed Super Cup Kit (7/2010)
        TAS rear drum-to-disc conversion (6/2010)
        Above photo taken - 4/2010

        Comment

          #5
          If you have a f22a1, and the stock manifold still, the o2 sensor should be accessible from the front. If you have an f22a4 or f22a6, you'll have to climb under the car to unplug it. I have an a1, so it was a cakewalk, and takes 5 seconds to unplug or plug it back in.
          PT3/6 Development Thread | My 1991 LX Coupe | DIY: 90-93 Tcu Fix

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