Bad o2 with no ses light
#1
TECH Enthusiast
Thread Starter
iTrader: (3)
Join Date: Apr 2007
Location: Oklahoma
Posts: 566
Likes: 0
Received 0 Likes
on
0 Posts
Bad o2 with no ses light
Hey everyone, recently i installed a cam in my 99 trans am and got it tuned a few days later. Well while on the dyno the tuner said my passenger o2 showed no activity and therefore it is bad. My car is also running rich. Is it common for an o2 to be bad without a light ?
#2
Staging Lane
Join Date: May 2009
Location: North Carolina
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Chances are the OBD hasnt gone thru the complete cycle(s) yet to activate the SES light. It usually has to run 2 cycles before it will say "okay its fucked, throw the code". I wont say what your cycle consists of because I dont know but its usually a series of start ups. If its showing no activity just go ahead and change it... oh and DON'T GET A BOSCH!
Last edited by Killjoy32; 03-18-2011 at 05:37 PM.