Timing Belt or Timing Chain?

Toyota for a long time used timing belts with their 4 cylinder engines. However, with the advent of the 2AZ engine (your 2.4L L4) and variable valve timing (VVT) Toyota elected to use a timing chain. So your Solara has a timing chain. (The 3.3L V6 Solara uses a timing belt.) The timing chain requires no specific maintenance. We do caution though that you be extremely consistent with 3,000 mile oil changes, as stretching the distance between oil changes is NOT recommended for the VVT engine.