Jeff in the boat
New Member
- Joined
- August 16, 2016
- Messages
- 1
- Reaction score
- 0
- City, State
- Westlake, Texas.
- Year, Model & Trim Level
- 2003 Sport Trac
So, I put a 2010 mustang 4.0 in a 2003 Sport trac. I switched all of the accessories and external parts over from the old engine that were needed to make the stang engine work. Everything went very well. The truck had no issue other than the typical timing tensioner issue. The truck runs well and drives perfectly except when it goes to shift into overdrive or the torque converter locks up. Right around 50 the transmission shakes VIOLENTLY. once it does that, it manages to do its thing and get into overdrive/lockup. I am at a complete loss unless it's just a coincidence and the tranny has a legitimate issue now. It is transmission code D and the Transmission has a dipstick. A5LDE/5R44/55E
