BeepBeepRR
Well-Known Member
I replaced the O2 so now its running well again. I just need to figure out the IAC. Either its a vacuum leak or its the fact that I missed the step to turn off the idle spark when adjusting. Which I know for a fact I did not do. So hopefully that will cure it and hopefully it wont be an intake leak. Seems more simple to adjust the IAC rather than pull the intake. Will update with my findings.Like I said, between 1-5%. I have a Sniper myself. That's what you want.
And again, if you can't get the AFR to stay at what's commanded then like the OP is now grasping there is something preventing it from happening. I'll say I have had a similar issue myself with exhaust leaks. When I first started the tuning process, the headers and exhaust were nice and tight. With more heat cycles things loosened up a bit and the AFR became inconsistent. Tightened up the connections, problem solved. Honestly, I still battle with it, just the nature of the beast - the headers just don't seal as well as they should. Find the intake or exhaust leak and things will smooth out.
And as I stated earlier in the thread, the 02 was the least likely culprit here. Suppose it could have become contaminated if there was enough unburned fuel in the exhaust but that wasn't the fault of the 02, it was a result of an out-of-range condition upstream.
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