INSANE hesitation and bucking, MAF signal too high, positive charge deviation...damnit!
10-25-2004, 11:49 AM
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INSANE hesitation and bucking, MAF signal too high, positive charge deviation...damnit!
Disregarding my other posts in teh past few days (partially because I was not able to take logs i was going to before this insane hesitation and bucking)...what would you think my problem would be?
oh yeah, the ABS and ESP light are comming on and going off all the time too. car is borderline undriveable like this, happened today at lunch. idle is very shaky too...
For reference: AMS chipped, brand new TBB, 710N diverter valves and possible a small vacuum leak somewhere.
oh yeah, the ABS and ESP light are comming on and going off all the time too. car is borderline undriveable like this, happened today at lunch. idle is very shaky too...
For reference: AMS chipped, brand new TBB, 710N diverter valves and possible a small vacuum leak somewhere.
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10-25-2004, 12:42 PM
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BUT WAIT, THERE's MORE! some more info after i just went out to the car.
Well, turns out I did get rich codes on both banks (between the time I checked while I was at compusa during lunch hour and now, not sure when they came up). This is in addition to the MAF too high and positive deviation codes.
I cleared the codes, and the MAF code comes back within a minute. Therefore this is a condition that can happen at idle. Positive deviation code did not come back, which **probably means** that Mike2Ks4's theory about the divert air (when you lift off the gas) malfunction may be present..significant because that valve I questioned in a previous post goes directly to the divert air contol actuator.
After clearing codes the idle gets really rough, O2 sensor values go back to within 0%-3% or so. After a while they go all the way to -25%! I'm guessing that means rich. I'm guessing it does this dumping of gas because it thinks its getting more air than it is.
Interestingly enough, the car idled fine when I first went out there just now....probably detecting the codes present and putting into some kind of safe mode.
I cleared the codes, and the MAF code comes back within a minute. Therefore this is a condition that can happen at idle. Positive deviation code did not come back, which **probably means** that Mike2Ks4's theory about the divert air (when you lift off the gas) malfunction may be present..significant because that valve I questioned in a previous post goes directly to the divert air contol actuator.
After clearing codes the idle gets really rough, O2 sensor values go back to within 0%-3% or so. After a while they go all the way to -25%! I'm guessing that means rich. I'm guessing it does this dumping of gas because it thinks its getting more air than it is.
Interestingly enough, the car idled fine when I first went out there just now....probably detecting the codes present and putting into some kind of safe mode.
10-25-2004, 12:48 PM
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measuring block ? ....you can check 034 and 043
you would most likely have a code / DTC. But it can cause the bucking you describe. Id lean toward IC hose with the positive deviation code.