Isuzu Repair: Help with 01 Rodeo, intake manifold gasket replacement, intake manifold gasket

Question
3.2L, V6 with 77K. Check engine light came on/stayed on, engine began to idle rough and stall occasionally. Got trouble codes of "fuel system too lean" and "too rich" for both sides. Replaced air filter, and both O2 sensors and had codes cleared but this didn't fix it, because the same symptoms are back. Got a recommendation by another that intake manifold gasket replacement is the issue. Got a second expert opinion?  And would the repairs be do-able for a novice? What kind of money am I looking at? Any info would be appreciated! Thanks alot.  JD

Answer
Well J.D. The intake gasket issue is so bad on these models they actually issued a recall notice. The Main ground wiring harness is also an issue that needs to be checked out as well. I would recommend spraying some carb cleaner around the intake gaskets and if the rough idle stops That is your problem. Let me know if any more help is needed.