I was driving and came to a stop. The engine's cooling fan kicked on for a sec and ran fine, then suddenly started clicking loudly. It sounded like someone was sticking a screwdriver into the fan as it was spinning. Upon visual inspection i found nothing, but upon a closer finer look once home i was able to pinpoint the exact blade that cracked from its outer ring. Purchased replacement fan assembly for $120 and repaired it myself. Estimate given to me was 125 for the part and 100 for labor.