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  1. Engine - 4.6L & 5.4L
    here lately my car has been running rough it idles and runs as smooth as a new car sometimes and sometimes you can feel like a miss and the alternator gauge bogs down and then when it smooths out it goes back to normal its also has a brand new alternator in it having the air on doesn't make a...
  2. Engine - 4.6L & 5.4L
    I've data mined this group for solutions to an all too common problem with 4.6 engines, stalls and rough running engine conditions when in closed loop mode, yet running in open loop the engine is smooth as silk. Most of the discussions end without a solution or with an extreme solution that...
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