My car started to stall on idle, it boggs and sputters and jsust stalls. Drives fine over 1000 rpm...... I got 4 codes 3 of them r relatd to the auto tranny not being there so im not worreid about that one....last one is 0302 EGR Sytem Hi/Lo FLOW. Can this cause the car to bogg out and stall out??/