Spark-plug blew out of aluminum head on a 97' Ford Expedition with 155,000 mi. Paid $4500 for a new "improved"re-built engine. Spark-plug blew out again with 1,000 mi. On new engine. Ford will not talk to us; we would like some answers as we were told the "improved" design addressed the problem of the spark-plugs only having three(3) threads holding it onto the aluminum head.

- Morro Bay, CA, USA

When I take off the gas is sticky and takes alot to get it going, when turning from stop my rear end vibrates like it's going to fall off. Aready had the transmission replaced by the dealer ship I got the car from. Driver side window clunks when rolling down, motor makes a knocking noise when cold. I just don't expect this kind of problems when you pay alot of money for a nice car.

- Highland, MI, USA

The head gasket failed, dealership completed repair without charge.

- De Bary, FL, USA

Aluminum head failure, again (dot number: 0 tiresize: 0)

- Streamwood, IL, USA

Would hear noises in the engine. Front drive serpentine belt keeps breaking. Has taken vehicle to dealer's at least 12 times for problem. Also, the crankshaft/ pulley tensioner would loosen & the vaccum to the brakes. Would not have any brakes due to lack of pressure.

- Fair Oaks, CA, USA

Oil seal/grease retainer--oil leaked.

- Fullerton, CA, USA

While driving vehicle engine shut down. Cause of problem defective crankshaft seal. Also tie rod end was never connected to vehicle at the factory.

- Brick, NJ, USA

Serpentine belt failure.

- Holmdel, NJ, USA

Engine push rod failure.

- Avon, CT, USA