hey guys, ok well the other day out of know where i started getting a idle problem, it idles at only 500 rpms but only once its fully warmed up. its not a roughf idle but not smooth at all either. i took it to the dealer and the said that one side of the engine was 10% leaner then the other, but was still in spec. also this is what confuses the hell out of me.. they said that one of the oxygen sensors just stays on constanly, not switching 50 times a second like its supossed to. what the heck does that mean? and would that be the cause? they said it was prolly because of the exhaust or intake and charged my $95 just to reset the idle, which didn't change anything. help? lol

my power train mods are motordyne plenum spacer, intake, throttle body coolant bypass, y pipe, exhaust, but stock headers and stock cats.

 

bump?

 

what kind of intake u have?

 

custom, but i do know that its not leaking, and i've had it on for over 20k miles

 

I was thinking the o2 sensor thats not switching, just staying on according to the tech, might be bad, does that sound correct? because even he didn't know, (which doesn't say much for nissan dealer techs)

 

?