Having problems with your 2006 Hyundai Sonata ?
Hyudai matrix 2006 revs excessively when stuck in traffic intermitant problem
It sounds like your idle air control valve or your trottle postion sensor is giveing you trouble you might have the codes ran and see what it pulls up.
Repair Help & Product Troubleshooting for 2006 Hyundai Sonata
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