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July 1st, 2008, 07:25 PM
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02 #s
My 02 Is At Around 375 To 425 At Wide Open Isnt That Low?
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87 GN 58K 12.2 ALL STOCK 86 GN 34K T-TOPS 88 MONTE SS 585 HP T-TOPS RED 18" WHEELS 2005 YUKON 2003 SILVERADO SS SUPERCHARGED     
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July 1st, 2008, 07:39 PM
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Yes.... assuming the sensor is working properly, you are waaayyy lean.... as in blow the headgaskets at any second lean... What is your fuel pressure set at? How much boost? What mods? fuel pump? hotwire? chip? etc...? STAY OUT OF BOOST until you get this straight.... or you WILL damage your wallet...
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Brian MacKinnon Guntersville, AL 86 T-Type, mostly stock
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July 2nd, 2008, 06:19 AM
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Those kind of numbers, assuming they're accurate (which they obviously can't be or you'd be picking up parts of your motor), would equate to an A/F ratio of about 15.0:1 or leaner.
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TurboDave EWCS(SW) USN Ret My Photo Gallery 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
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July 2nd, 2008, 08:10 PM
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Hot Wire Kit,13lbs Of Boost, Fuel Press At 42 With Vac Off Billit Fpr Stock Chip, Injectors' Intercooler And Turbo Also When You Let Of The Gass The 02's Drop To 000 In Ran A 13.56 At 98 Mph At The Track A Few Weeks Ago Any Ideas Not Trouble Coads Present
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87 GN 58K 12.2 ALL STOCK 86 GN 34K T-TOPS 88 MONTE SS 585 HP T-TOPS RED 18" WHEELS 2005 YUKON 2003 SILVERADO SS SUPERCHARGED
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July 2nd, 2008, 09:47 PM
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Are you getting any knock retard? If so, that will confirm the lean condition. If not, then I'd change the O2 sensor and see where you are. Personally, I'd use the AC Delco AFS20 (with purple wire). Regardless, keep the boost low, and don't beat on it until your SURE it's not leaned out.... 400 mV O2's would assure me something is wrong....
 oh, and you need a new chip... 
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Brian MacKinnon Guntersville, AL 86 T-Type, mostly stock
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July 3rd, 2008, 08:15 AM
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In addition, O2's dropping to 000 (or a very low number) during decleration is normal, it's called DFCO (deceleration fuel cut off).
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TurboDave EWCS(SW) USN Ret My Photo Gallery 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
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July 3rd, 2008, 09:08 AM
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I also think you need to replace it asap! I think it's going bad. To check it you could switch it out with a known good one and see where your numbers are.
If your going to be runing race gas I would suggest getting the DENSO o2. It's MUCH more resiliant to leaded gas than a stock one.. Scot W.
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Digital LED Tail lights  1986 T-Type GNXRay (X-ray clone) White W/black out trim, Grey leather int., LED taillights from InjectionX, H&R engine Mounts, 55lb injectors, G-body parts S.L.I.C, 9.5" (Dusty Bradford) PTC N/LU conv, Trans re-worked by Todd Lyle, Walbro 340, Hot wire kit, RJC powerplate, 3" TH down pipe, ATR 3" Stainless Steel dual exhaust, 4-Adjustable drag shocks, Southside uppers & lowers, Carrilo rods, JE forged pistons, Driveshaft loop, powdercoated & polished GTA rims.. 1986 GN - 6.76 @ 103.8 1/8th - SOLD 1987 WE4 - SOLD Last edited by scot w. : July 3rd, 2008 at 09:11 AM.
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July 11th, 2008, 11:12 PM
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put in new fuel pump hot wire kit now i have 800 o2 count and 14.2 retard a wot there is still some thing wrong 92 oct fuel stock inj adj fuel press reg set at 43 with vac off stock turbo set a 15lbs of boost any thing im missing? i hear a little exaust leak from drivers side header but you have to listen hard to hear it
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87 GN 58K 12.2 ALL STOCK 86 GN 34K T-TOPS 88 MONTE SS 585 HP T-TOPS RED 18" WHEELS 2005 YUKON 2003 SILVERADO SS SUPERCHARGED
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