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hi the code you have is fuel system too lean cylinder bank 1 had same problem on my 53 reg v6 i changed lambda senser you have 2 on yours upstream and downstream the one at top of cat on manifold is upstream bank1 lower one that goes into cat bank 2 once i changed senser (got mine from chrysler dealer £122 )still had same problem after lots of diagnosis it turned out i had intermittant fault on one of wires mine was negative wire that comes out senser auto electrican ran buy pass from negative wire on senser to body work cured problem my symptoms were you drive along go to accerate then lose power for about 5 secs then fine fault was intermittant would not happen all the time your senser is pretty easy to replace open your bonnet look behind intake manifold and ontop of exhaust manifold you will see senser it has electrcial wire that can be fiddly to get to but if you get hold of senser end of wire (it has like a coil spring like wire around base) follow that to connecter slide red clip backwards and pull connecter apart hopes this helps it increased my mpg by 6 mpg urban and 8 mpg on run