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Code 1222?

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    Code 1222?

    Hi R3V I was driving my e30 last night back from the socal meet and it drove fine until about 3/4 of a mile after I exit the freeway. I was just in 2nd (auto) and was doing about 50 when i felt suden loss of power. It did completely nothing even when I went 100% throttle with the kick down it felt like as if the car was off. I pulled over and let it roll in drive and all ot did was just bog and idle like crap. When j pressed the gas while rolling at about 5mph it bogged even more and turned on the MIL (CEL). i just had it rolling for about 7 minutes and it did climb a little uphill part at about 5mph and then all of a sudden power came back and it started to run fine until i messed with it again and put it to the floor. It felt as if i was out of has but i have 3/4 of 91 in the tank. I got home to do the stomp test and i got 1222.

    I know that 1222 means cars either operating rich on lean. I am sure its lean because it feels as if i need fas but i have gas. It drove fine today morning to work.

    The parts that can cause this are:
    O2 sensor
    Afm
    Vaccum leak
    Fuel filter (new)
    Icv? (New)
    Tps?
    Temp switch (new)
    Fuel pump
    Sparkplugs (new)
    Wires (new)
    Cap and rotor?
    Or faulty injectors?

    My econometer doesnt work but I have measured and approximately I get about 8mpg city and 13mpg highway

    Car has about 183xxx miles on i it and has never done this before.

    Note: my friend borrowed my car and scraped the exhaust and there is a hole after the cat past the flanges. Car also has a new alternator battery and all fuses look fine.

    I will do a smoke test today and keep you guys informed. Any help would be appreciated. Thank you.

    1989 E30 325i Sedan Alpine
    Last edited by staysideways; 12-12-2016, 01:08 AM.

    #2
    If a properly executed smoke test revealed no leaks I'd be thinking of a problem with the engine timing reference data, the fuel delivery system or injectors, the AFM, or possibly the DME.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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      #3
      Originally posted by jlevie View Post
      If a properly executed smoke test revealed no leaks I'd be thinking of a problem with the engine timing reference data, the fuel delivery system or injectors, the AFM, or possibly the DME.
      I checked the afms rail condition and the slider they were both in excellent condition. I dont know anything about its timing but i did do a timing belt about 8 months ago and while i was there i did fuel hoses lines and filter but i havnt touched the fuel pump. And i just dont wanna throw random parts on it until it gets fixed because at the moment i have put all the cheap ones on so leaves me with a valve job for now?

      1989 E30 325i Sedan Alpine

      Comment


        #4
        Before I replaced any more parts (and I only use OE or OEM parts) I'd do more diagnostics. I have a PDF on AFM testing that I can email you. Send me a PM with your email address. I'd start with a proper smoke test (which you might have done) and then check fuel rail pressure with the engine running. This being an M20B25 engine you should see a bit less than 3.0bar at idle and 3.0bar with the throttle open.

        BTW: A properly conducted smoke test means plugging the exhaust and replacing the AFM with a plug containing a nipple for smoke injection. Then you pressurize with 2-4psi of long persistence oil smoke for about 10 minutes while looking for leaks. This pretty much means using a pro type smoke machine. If any major leaks are found, they mist be repaired and the test repeated.
        The car makes it possible, but the driver makes it happen.
        Jim Levie, Huntsville, AL

        Comment


          #5
          Originally posted by jlevie View Post
          Before I replaced any more parts (and I only use OE or OEM parts) I'd do more diagnostics. I have a PDF on AFM testing that I can email you. Send me a PM with your email address. I'd start with a proper smoke test (which you might have done) and then check fuel rail pressure with the engine running. This being an M20B25 engine you should see a bit less than 3.0bar at idle and 3.0bar with the throttle open.

          BTW: A properly conducted smoke test means plugging the exhaust and replacing the AFM with a plug containing a nipple for smoke injection. Then you pressurize with 2-4psi of long persistence oil smoke for about 10 minutes while looking for leaks. This pretty much means using a pro type smoke machine. If any major leaks are found, they mist be repaired and the test repeated.
          Yea thats what i did with the smoke test. And the smoke machine was a good one too.

          But anyways my email is argadt4@gmail.com thanks

          1989 E30 325i Sedan Alpine

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