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Widebands...

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    #1

    Widebands...

    For the first time since i installed the wideband(over a year ago), I just put the narrowband back in. Now with the wideband, cold idle would be from 3000-1000, but it would settle down after it was warmed up. now with the narrowband, it does the idle, but it also feels like it miss firing. when i drive it's jerky and at part throttle it barely moves. and get a CEL sometimes, but its on and off and i don't have a chance to grab the code. any ideas or similar problems?
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    #2
    Strange...did you datalog your narrowband readings to see what it's up to?
    Only thing i can think of is that under lower loads if your tune was too far off, then the ECU would try to compensate (but do a poor job doing so, over compensating cuz your tune was probably fine). Did you try Narrowband simulation on your Wideband and run with that?

    From what i've read though, you might just be better off in open-loop mode...people say their readings are much more constant with them...might just have to tune a bit more with them.

    If your cold idle is much better with the narrowband, make a note of exactly what the injector duration is while datalogging. Then go back to open loop, see what it is and adjust accordingly...oh wait, mhh, if you are running uberdata then you can't adjust the cold start enrichment routine.

    I'd recommend switching over to Crome...it's a fairly nice program....but i'm getting ahead of myself. Let me know on a couple of these things. TtYl

    mark

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      #3
      has nothing to do with my tune...i run open loop...otherwise i wouldn't have a running motor. my tune is fine...ecu isn't compensating for anything. I tuned it with the wideband, which also simulated the narrowband, so i'm thinking the sensor might be faulty. i got a CEL one time and my car died, but i turned it off and back on and it started no CEL. I'm on UD 1.66, that's how far i am behind, plus my map works perfect so why bother fixing it. I'm going out to throw the wideband back in, can't be escorting the ladies around in a car the bucks like a bull
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        #4
        haha, you get ladies in that car


        lol

        I dont see how it could have any effect on how the car runs because it is in open loop, so the ecu is doing absolutely nothing different.

        is this a stock o2 sensor, or the narrowband output from your wb controller?

        is the o2 heater off?

        CrzyTuning now offering port services

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          #5
          this is the stock narrowband thats causing problems. before i was running zeitronix with simulated narrowband. o2 heater disabled
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            #6
            oh ya...like you said, make sure you enable the heater on the o2 again.

            Good luck.

            Mark

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