Toyota 4Runner engine redlines and clunks into gear when accelerating, no apparent issue found on Toyota 4Runner

Some Toyota 4Runner owners report experiencing engine redlining shortly after startup, which raises concerns about insufficient oil pressure buildup. Additionally, exceeding the redline for prolonged periods may lead to engine damage. Others have noted clunking sounds when shifting gears, particularly from drive to reverse, which could be linked to low transmission fluid levels or a faulty clutch. A flashing check engine light during these occurrences may also indicate underlying issues that require immediate attention. It is advised for owners to maintain proper fluid levels and consult a mechanic for a thorough inspection to identify any hidden problems. Promptly addressing these concerns is crucial to prevent potential long-term damage to the vehicle.