bad map sensor will have pig rich drivabilty problems
thats manifold absolute pressere(telss putor how much air id moving thru throttle body throut)
temp sensor will keep it in a open loop for warm up(like a choke is on when it should be open/off)
the intake plenum gaskets could be sucking air/oil and putor is trying to compensate for the airleak.
o2 sensors will make it run poorly with rich idle/poor mpg
stuck egr can cause it to stumble when cold and run poorly.
have the auto computor reflashed for a 4-5 speed manual 5.2 magnum, the lco up mode maybe causeing issure with the computor and engine controls
better to change it to carb?? maybe maybe not.
I do know I wont have one, I cant afford to nickle & dime it, with out $ and knowhow it can be expensive to fool with MPFI.
not knocking it, I just dont understand it enuff to waste my $ on it when I get better performance/mpg from a 35-40 yr old q-jet with a set of points thats been converted.