Is there a tension adjuster on 2002 ford E250 van?

Yes, the 2002 Ford E250 van is equipped with a tension adjuster for the serpentine belt. This tensioner is typically an automatic type, which maintains the proper tension on the belt as it wears over time. If you need to replace the belt or tensioner, it's important to ensure the tensioner is functioning correctly to prevent belt slippage or damage.