If it spins fairly freely with the engine off and engine cold, it is probably fine.

It should engage when first started, until the fluid is re-distributed.

When the engine is warm (above 195F I believe) the fan should engage and "roar" as you rev the engine, and it will up to redline unless it cools enough to disengage.

It will engage less at higher RPM, it is designed to limit the RPM of the fan, not disengage at high RPM.

__________________

Gone to the dark side

- Jeff