...2002 Hyundai Sonata and I had the same problem. But mine would always shift into 3rd gear and STAY there until I turned the car off. I took it to a Hyundai dealer and he had to rewire a speed sensor ...
...go 30 mph 2002 Hyundai sonata automatic.starts,runs fine until it gets to 30-40pmh.then it starts to buck and not want to shift.no code when diagnostic test was ran could be catalytic con. plug
...2002 hyundai sonata v6. i am getting codes P01529 and P0765. P01529=TCM MALFUNCTION P0765=SHIFT SOLINOID MALFUNCTION CAR WONT SHIFT GEARS BUT RUNS GOOD OTHERWISE. WHAT CAN BE DONE TO MAKE THE CAR ...
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