New to Toyota 2 sporty Hondas so far...

[arky]

Well had to get a minivan for the kids and just bought 98 Sienna. Previous owner was stealership fan so almost everythig is on paper . Dont see any timing belt replacement proof at 150 therefore not sure if its belt or chain :O)

[Hajoca]

Belt.

If changed, a Service sticker should have been placed on Timing Belt cover in engine bay, or stuck onto the inside hood.

[arturo]

Go to the toyota dealer and have them do a check or run a diagnosis.