I just bought a 2004 expedition with some faults. Truck has about 188000km When I'm traveling at 60km/h (gps) speedometer is showing ~15km/h, and the transmission won't shift because of that... it will shift in to 2. If I set the gear lever in 2. Output speed sensor and DTR are new, didn't make any difference. Checked fuses and they are ok. Any tips in here? Do I need a new cluster?