I dont know much about newer ford trannys as my other auto cars always had th350's...Im just curous because sometimes my aode acts like it shift to 4th early and feels like the engine is missing..if I give it gas it downs shifts and is fine...It only does this sometimes..I havent change the tranny fluid and filter since I bought it 6 months ago as I dont have time (single parent whose kid has deadbeat mom)...I do plan on changin the filter and fluid soon but I also noticed a vaccum hose that goes from teh back of the intake manifold along the firewall and down to teh wheel well...what does this vacuum hose do? Does it go to teh tranny . Its kinda dry rotted looking. Any help appriciated