general problems of the 2004 Hyundai Sonata

Unknown, I recently purchased it from a dealership in lemon grove cailfornia. Ever since I bought it,it has never had a catalytic converter and only one muffler. It is a 2. 7l motor dohc and requires 2 catalytic converters and dual exhaust due to the double overhead cam. It has cause motor oil into my engine block and has coughed my heater core. Also blown head gasket. I have hired certified ase mechanics to replace parts and then I run into another problem.

The right side of the engine cradle broke (due to corrosion); the result of this broke the right front half axle, and detroyed right front tire.

Backing into the garage, my foot on brake, the engine suddenly revved to high rpm, the car shot backwards, propelling a heavy rubber mat on which the car is normally parked out of the garage and into the driveway. The vehicle then impacted and crashed through the rear garage wall before coming to a stop. I managed to pry the gear lever out of reverse, hit drive instead and sent the car, wheels still spinning and laying down rubber, forward out of the garage. On its way out the car swiped along the right side the garage door post before finally coming to a stop in the driveway. Final result, serious damage to both the car and the garage. Fortunately this did not occur in traffic or with pedestrians in the area. On-line research has since shown me that there have been numerous other similar incidents where Hyundai Sonatas have suddenly accelerated on their own. . Read more...

While driving my 2004 Hyundai Sonata at low speed, the engine suddenly died. This caused me to lose power steering and power brakes. Fortunately there was space for me to pull to the curb and no one was behind me. After an hour or so of trying the car started up and I drove it home. Three days later it happened again on a busy street at about 10 mph. Again I was fortunate and could pull to the curb. This time I could not start it and had it towed to a local repair shop. They diagnosed it as a "defective evap. Solenoid that was causing engine flooding. " this was a very scary occurrence--if it happened on a highway it would be very difficult to steer (due to loss of power steering) and my sudden slowing could cause rear-end crash. The old part is not available.

The contact experienced problems with starting the vehicle on two occasions. When it occurred the first time he attempted three times before the engine turned over. The second time the key remained in the ignition for four minutes before the vehicle would start. Also, the dealer stated the problem was intermittent, and only occurred once. Because the dealer was unable to duplicate the problem no repairs were done.