Gas Recirculation Valve (egr Valve) Problems of Hyundai Accent

The contact owns a 2012 Hyundai Accent. The contact stated that after receiving an oil change on the vehicle and driving approximately 20 mph, there was a knocking sound coming from the vehicle. The contact stated that there was a metal-on-metal sound. There was an air temperature sensor warning light illuminated. The vehicle was diagnosed by an independent mechanic with an oil control valve failure. The oil control valve was replaced; however, the failure recurred. The manufacturer was not notified of the failure. The approximate failure mileage was 116,000.

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Was driving the car 10-15 miles from home. Engine started smoking. Pulled off and let the car cool down. I live in az; it's 80 degrees or so now. Started car and drove home. Car started smoking again and shut down. Called local roadside mechanic for Hyundai�s. He looked at it and said, it was leaking, fan frozen, broken gasket. Had the car towed home. It's a 2016. I bought it in Jan 2018 from a dealer in pocatello, idaho. It's only 4 years old, less than 62000 miles. It shouldn't have motor problems/issues.

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Approximately 3000 miles after having a 60,000 mile service involving replacement of all belts, including timing belt using high quality belts of known quality, a high voltage arching condition is observed on the face of the harmonic balancer (hb). Arch is approx. . 250-. 500 inch in length and projects from the outermost edge of the hb toward the center of same. Using a jumper cable connected to the negative battery terminal, arch can be pulled from the outer edge of harmonic balancer, but no other pulley surface nor belt surface. Condition is intermittent and forced reproduction has not been possible, but occurs with sufficient frequency to permit troubleshooting. Condition has not been previously observed. After extensive diagnosis, it appears the insulator rubber between mating parts of the hb has degraded resulting in excessive internal resistance which results in static charge generated by belts to escape pulley interior, discharging over the exterior surface. Under the right conditions, this could result in an explosive event should a combustion fuel be present; therefore this should be investigated as a safety issue. Dealer states no knowledge of this being an issue. Replacement hb on order and is expected in about one week.

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Vehicle's had a high idle, which caused unexpected acceleration. Dealer has repaired the defective part, but problem still exists. After the repair, both the throttle position sensor and the pulse generator had gone bad. Dealership refused to cover parts because they were out of warranty. Finally they agreed to replace the throttle position sensor free of charge. The consumer had to pay for the pulse generator to be replaced. Consumer feels the prescription outlined in the recall wasn't sufficient to correct the emissions defect.