I own a 2005 Expedition XLT. Dogs out when stopped and you hear clatter noise

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Have had everything done to this vehicle just when you think your finished repairing it another thing happens. Runs great has awesome pick up and go, yet when sitting at stop light it dog's out and you here a clatter type noise when you give it a little gas to get it idleing normally .Vehicle has rebuilt transmission less than 30 days ago, I also replaced camshaft sensors ,tires, rack/pinnion and brakes. Now I have a clunk sound when going over bumps from under carriage of vehicle. Any Ideas at what ideling problem and clunk could be? OH yes and is their a way to tell which tire pressure sencor is bad ? Without replacing one at a time to see which one it is.