HI, The belly bumper cover has to come off as a couple of lower headlamp assembly bolts are located at the back it. Here are directions interest remember to rate assistance using the rating page therefore that I may get credit. Thanks
Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a ill pump will all result in insufficient fuel physical delivered to the engine. Might in addition to be worth cleaning out the idle readiness rule motor / valve as these get clogged going on subsequently carbon and some brake cleaner washed through helps pardon things off.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you occurring to date on every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms going on and is warmed up? oftentimes in engine deed many factors may cause the thesame symptom(s)