After the engine reaches normal operating temp, the intake is supposed to switch from pulling air from the warm engine compartment to pulling it from the cool wheel well.

Maybe the damper on your intake is blocked or perhaps your cold air intake is clogged. Pull out your airfilter (& replace if dirty) and check around in the airbox to make sure all is well in there.

On the other hand, maybe it's time to consider installing a snorkle kit