any help appreciated

[lockmup]

97 ranger 4.0 auto.this has been ongoing for a year now,truck runs great,sometimes very rough idle to the point of battery guage going up and down then stalls,cranks right back.codes say banks 1&2 lean,replaced o2 sensors,cleaned maf,change IAC,seemed to happen more when braking,replaced,power booster,now the idle is better still misses,shakes,but the gauge is steady,still stalls.not all the time just sometimes,seems to get worse when cold weather,have used 2 cans of either trying to find vaccum leak.my son drives this truck and I really need to get it fixed,would take to shop if i could afford it....Thanks

 

[eli]

Have you check EGR or fuel system and is it an auto trans or stick shift?

 

[lockmup]

its an auto,have not checked egr or fuel system,dont know how but am willing to learn