Problems with 1999 Ford Expedition POWER TRAIN

Vehicle would shift into a low gear by itself. consumer has almost lost control.*ak

At 3000 miles the engine was replaced due to a knock in the engine. at 11,000 miles there was a severe vibration in the drive train at 65 mph with the vechile under load - ford couldn't identify the problem and had no fix. at 12,500 miles the torque converter failed resulting in the vechile stalling at stops. the torque converter and transmission were replaced. this reduced the vibration but did not eliminate it. again ford tried several times but could not identify and correct the problem. at 21,000 miles the vechile lost all power and would only move by reving the engine (like severe clutch slippage on a manual transmission). ford is presently investigating. both failures could have resulted in severe accidents if the driving conditions had been slightly different at the time of the failures. the problem appears to me to be in the computer constrol system for the transmission resulting in possibly the second failre of the transmission.

Transmission is leaking over and over again after being fixed. yh

1) upon accelerating from a stop, the transmission/transfer case seems to slip and shudder as if the tires are not grabbing the road. this is at all speeds, whether slow or quick starts. also, during high speed acceleration such as when passing on the highway, there is a low pitch growling sound and vibration as if the engine mounts are broken. 2) the front intermittent wipers turn on by themself occasionally, usually just for one sweep then turn back off. 3) the rear automatic load leveling air shocks on one occasion deflated totally after being parked for about 4 hours. the truck chassis was nearly touching the rear tires, i was unable to drive away until they reinflated after starting the vehicle.

While driving transmission lost shifting power. this would happen at different speeds. was hard getting vehicle to restart. finally stopped working. taken vehicle to dealership & contacted the manufacturer. the problem of lost shifting power was not resolved. *ak

When vehicle began to move transmission began to slip. when stopping one can feel the transmission jerking. dealership changed the spark plug and the hose clamp, (2) test drove vehicle, and recognized the slipping, but could not remedy the problem. (3) engineer checked transmission and it was okay. second engineer tested and said it was normal. manufacturer said if brakes fail they would be able to fix them. *ak

The windshield wipers fail to work when needed. on dry days would come on, on wet days do not come on. rear wiper was repaired. now neither works, front or rear. transmission will not shift properly. had it checked & metal pieces had broken off. transmission burnt out. had the piston replaced. the power winddows would go up & down without key insertion.