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Message: <blockquote data-quote="98green5.4" data-source="post: 759075" data-attributes="member: 11312">Thanks for the reply man. My car does the same thing when you push the clutch in, or slide into neutral. it's like the rpm's fall really fast as if you were turning the car off, but it just idles then.I had my snap on scanner on my car today, and i was running the car at idle and also at about 3500 rpm. the o2 sensor's showed they were working When they passed about 3300 rpm's (where imrc plates would usually open fully up) but when the car was idle the bank 1 sensor 1 o2 would go back to their old ways of showing nothing really.I have another thread on a different forum and a guy on there was posting up stuff that would make ONE bank act up separately from them being a pair. One of the things was an exhaust from the o2 sensor up to the cyl head. Well i know i have an exhaust leak where my midpipe connects to the manifold. Would this be that crucial enough to make the o2 sensor act up like that?I just personally think it's strange that one side would do that, and on the other side (bank 2) the o2's work fine even at idle. Anyone have thoughts on this?The car "SEEMS" to run like normal above 3250 (where the imrc's would open) and that would make sense to me.once again, any help is appreciatedthanks, Blake</blockquote>