Complete tune up changed intake gaskets, and pcv valve. codes say, running lean in bank 2. and o2 sensor in bank 2 not responding. changed all o2 sen. 2yrs ago. and just put a new engine wiring harness on. and still smell exhuast while driving. please help!
What does exhaust smell like you may have carbon build up in engine try removing o2 sensors and cleaning with brake clean and reinstalling reset code and see if it comes back and how long it takes to reset also you can put a can of berryman in the gas tank with at least 1/2 tank of gas or more also buy a can of sea foam and install through vacuum booster hose you may see lots of black smoke from tail pipe if so after following instructions for application drive some what hard and if the black smoke continues fore at least a mile keep driving and if you notice a diff in runability but still have a little black smoke buy another can of sea foam and repeat service NAPA has sea foam on sale this month
SOURCE: 2000 chevy runs rough
fuel pressure regulator might b leaking .. pull vacuum line off of it and see if there is fuel.... if soo replace it
SOURCE: CHECK ENGINE LIGHT ON , WITH CODE SYSTEM TOO LEAN
Possible failed bank 1 sensor 1 oxygen sensor..
SOURCE: 98 chevy s-10 codes p0131, p0171, and p1133
http://www.obd-codes.com/
go there look up the codes there all there
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