What causes this?
02-11-2002, 09:53 PM
#1
What causes this? All of a sudden my O2's @ WOT are all over the place.I mean ALL over the place.From .900 to .050 from about 4500 - 5400 in 2nd gear,then it levels out again. Used to be very consistant.Still pulls hard thru that range with no KR,so I know the readings are not correct.Both banks are giving me those readings,so I doubt BOTH O2's went bad at the same time.This is in FTC 22.
ANY ideas would sure be appreciated.
ANY ideas would sure be appreciated.
02-12-2002, 09:52 AM
#2
TECH Apprentice
Join Date: Nov 2001
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Re: What causes this? It's probably your ported MAF. Look at this post: https://ls1tech.com/ubb/cgi-bin/ulti...c&f=1&t=002585 This guy gained a ton of HP with proper tuning. His ported ends were really screwing up his AF.
02-13-2002, 12:12 AM
#5
Re: What causes this? Your O2 sensors could be FUBAR...it happens. They are a wear item and need to be replaced periodically.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
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2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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02-14-2002, 12:25 AM
#8
Re: What causes this? Well,I've been Atapping the **** out of it the last few days,and as suddenly as this problem came,it left just as suddenly.About the only guess that I have is that maybe some coating came off my new Mac headers & landed on the O2's. <img src="images/icons/confused.gif" border="0">