edward

hello I have a 98.5 ram diesel which gave me dead pedal intermittent the last week just at start up, then run good all day. it might have been worse on cold mornings. now its staying dead pedal. I have codes p01688 p0743 p0463 p1693 I cleaned all the grounds I could find except the one behind the starter was so stuck, penetrating oil and all. im going to have to take off the starter to get it off and clean that connection. could it be fuel filter or weak lift pump? or all having to do with torque converter clutch solenoid ? thanks. any leads, wisdom, experience is much appreciated