I have noticed that the Power Pack on the same year 4.0 engines are placed different, some up front on the right and some in the back right hand side, why

Asked by Beeman47 May 23, 2016 at 06:48 PM about the 2002 Ford Explorer Sport

Question type: General

i am looking to up grade my 2002 Sport Trac engine to a newer year engine. When i look on line at the engines available i notice that some have the power pack in the rear of the engine and some up front on the right will this make a difference in my choice of engines. I would love to put a 2004 or newer, Any comment or suggestions/

1 Answer
74,390

OJ answered 8 years ago

Could be engine modifications made by the manufacturer during mid model year, or inclusions of accessories from model to model requiring a re-positioning. First check your individual state regulations concerning EPA restrictions and see if there are any. Also, you may have to take along an entire host of additional sensors and EVAP components not included on the older engine. A PCM update will also be necessary. When repairs down the road are required by a professional, you'll have to inform him/her of the modifications made. Diagnostic electronic parameters could change.

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