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May 9th, 2008, 11:39 AM
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O2 mv numbers
My O2 mv numbers on my scanmaster jump from 0 to around 725 constantly even after a new O2 sensor, numbers barely improved.Can you tell me possible causes and cures.My other numbers are
af5 lb38 bat13.4 int126-137 clt200 ats84 rpm750 tps.46 iac20 cc30-235 thanks
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Tony Last edited by teegee : May 9th, 2008 at 11:41 AM.     
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May 9th, 2008, 12:36 PM
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You mean at idle? On a stock chip it is normal for the numbers to cross .5 volts constantly as that how the chip works, but to go all the way to 0...not so much. Who's chip is this?
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Steve '87 GN - Powerlogger/Scanmaster, TT Street Chip, ANS Electronic Boost Controller, PLX M-300 WB, Hot-wired Walbro 340, AlkyControl, Kenne Bell Ram Air, 3" dumped DP, TiAL BOV, TiAL WG and an ESP FMIC...for now...
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May 9th, 2008, 01:22 PM
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Basically all stock for now except for cold air kit and vacuum brakes.Buying upgrades to put on a little later.These numbers are after a warm up.The numbers on the o2 mv were taken driving the car never went wot.
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Tony
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May 9th, 2008, 01:29 PM
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You're seeing perfectly normal operations/O2mv readings for a NBO2 (narrow band O2).
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TurboDave EWCS(SW) USN Ret Email Us Sevierville, TN TranslatorPro MAFless fuel, spark and boost management 86 GN(TranslatorPro/ExtenderPro on speed density w/boost & fuel pump control,PLX-WB) (original owner) 87 GN (second owner) 84 L69 Z28 (original owner) 01 Excursion LTD 7.3L PSD(Power Stroke Diesel), Turbo, 4X2 08 Honda Accord EX-L, 3.5V6, AT My Photo Gallery
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May 9th, 2008, 01:33 PM
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X2, during normal driving it should go back and forth as thats how the chip calculates stoich, it counts cross counts (CC) per second which tells the chip if it is staying rich or lean too long.
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Steve '87 GN - Powerlogger/Scanmaster, TT Street Chip, ANS Electronic Boost Controller, PLX M-300 WB, Hot-wired Walbro 340, AlkyControl, Kenne Bell Ram Air, 3" dumped DP, TiAL BOV, TiAL WG and an ESP FMIC...for now...
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