Running very rough, no power, stumbles and dies.

Vehicle is a 1999 ZX/2 with Zetec engine.

Car was running fine, and filled up at a different station than usual. About 10-15 miles out of town (highway speed) the car started to stumble, no power, and then died. After a few minutes, car restarted, and limped back to town. MIL light came on.

Put some gas treatment in, which may have helped some. Drove car home and parked.

Three codes were set: DTC 0340, 1381, 1383. Cleared codes, and restarted. Reved engine several time, and 1383 set again. No MIL light, though.

Changed oil (which was overdue), cleared codes, and restarted. Improvement at first, but same conditions occurred on test drive. DTC 1383 set again, no MIL light.

Inspected Cam sensor harness. Looked fine.

Pulled cover off of timing belt. Teeth that were visible looked good. Back of belt had a trough scribed in it about 1/3 from the front edge of the belt.