Loren Smith
Active Member
- Joined
- October 14, 2020
- Messages
- 60
- Reaction score
- 20
- City, State
- Girard, PA. 16417
- Year, Model & Trim Level
- 2001 Explorer Sport Trac
Hi everyone. Long story here but seems like a small problem I can't find. 2001 Sport Trac (built 12/2/2000) 4.0 SOHC. Engine is from a 2001 ST unknown build date. ECM and ignition cylinder from a 2003 ST unknown build date. Put engine in the truck and everything works great BUT...After the engine warms up, idle will drop below 500 RPM and it struggles a bit. I realize idle should be 600-750 ish, right? How do i get this straightened out? Any help would be greatly appreciated.
