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.
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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">