We took our 2004 Hyundai Sonata to Purrfect Auto Service for a tune up and timing belt replacement on 7/22/2009. The vehicle was running fine prior to this. The total cost was $876. Within a few days, we started hearing loud noises coming from the engine immediately after startup. We returned the car to Purrfect several times to have this noise investigated. At one point, we left the car there overnight. The mechanics could not find the cause of the noise. In March of 2010, the noise returned even louder while driving to work. The vehicle wa... read full review »